Also update golangci-lint.

The Coindesk API doesn't have data going all the way back. But since history
isn't changing, we can simply put in known prices.

Also, extend the CDPR cells to have four digits instead of just two.

.gitea/workflows/build.yaml

@@ -17,12 +17,12 @@ jobs:
       name: Set up Go
       uses: actions/setup-go@v4
       with:
-        go-version: 1.22.1
+        go-version: 1.23.1
     -
       name: Run linter
       uses: golangci/golangci-lint-action@v3
       with:
-        version: v1.56
+        version: v1.61
     -
       name: Run tests
       run: go test ./...
@@ -31,7 +31,7 @@ jobs:
       uses: goreleaser/goreleaser-action@v5
       with:
         distribution: goreleaser
-        version: 1.24.0
+        version: 2.2.0
         args: release --clean --snapshot
       env:
         GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}

.gitea/workflows/release-tag.yaml

@@ -17,13 +17,13 @@ jobs:
       name: Set up Go
       uses: actions/setup-go@v4
       with:
-        go-version: 1.22.1
+        go-version: 1.23.1
     -
       name: Run GoReleaser
       uses: goreleaser/goreleaser-action@v5
       with:
         distribution: goreleaser
-        version: 1.24.0
+        version: 2.2.0
         args: release --clean
       env:
         GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}

.golangci.yaml

@@ -0,0 +1,15 @@
+linters:
+  disable-all: true
+  enable:
+  - errcheck
+  - godot
+  - goimports
+  - gosimple
+  - govet
+  - ineffassign
+  - nilerr
+  - nilnil
+  - staticcheck
+  - typecheck
+  - unused
+  - usestdlibvars

.goreleaser.yaml

@@ -6,7 +6,7 @@
 # yaml-language-server: $schema=https://goreleaser.com/static/schema.json
 # vim: set ts=2 sw=2 tw=0 fo=cnqoj
 
-version: 1
+version: 2
 
 before:
   hooks:

.idea/.gitignore

@@ -0,0 +1 @@
+workspace.xml

.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/moonmath.iml" filepath="$PROJECT_DIR$/.idea/moonmath.iml" />
+    </modules>
+  </component>
+</project>

.idea/moonmath.iml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="Go" enabled="true" />
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

.vscode/launch.json

@@ -1,18 +0,0 @@
-{
-    // Use IntelliSense to learn about possible attributes.
-    // Hover to view descriptions of existing attributes.
-    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
-    "version": "0.2.0",
-    "configurations": [
-        {
-            "name": "Launch file",
-            "type": "go",
-            "request": "launch",
-            "mode": "debug",
-            "console": "integratedTerminal",
-            "program": "${file}"
-        }
-
-
-    ]
-}

.vscode/settings.json

@@ -1,15 +0,0 @@
-{
-    "cSpell.words": [
-        "bitcoinity",
-        "Bitfinex",
-        "Bitstamp",
-        "bubbletea",
-        "CDPR",
-        "charmbracelet",
-        "Coindesk",
-        "lipgloss",
-        "moonmath",
-        "OHLC",
-        "sourcegraph"
-    ]
-}

README.md

@@ -1,6 +1,6 @@
 # moonmath
 
-## Bullshit BTC Price Projections, Now in Your CLI!
+## Bullshit Crypto Price Projections, Now in Your CLI!
 
 ![screenshot](./screenshot.png)
 
@@ -12,6 +12,28 @@ program. It's written in Go using the [Bubble Tea][tea] library, and uses
 [tea]: https://github.com/charmbracelet/bubbletea
 [coin]: https://www.coindesk.com
 
+### Installation
+
+Go to the [Releases page](https://code.humancabbage.net/sam/moonmath/releases)
+and download the archive for your operating system and architecture. (For the
+uninitiated, "Darwin" means macOS.)
+
+### Configuration
+
+By default, the program will use Bitcoin along with various goals and bases of
+comparison. With the `--asset` flag, another asset supported by Coindesk can be
+chosen. These can even be chained, e.g. `--asset BTC --asset ETH`, to show
+projections for multiple assets simultaneously.
+
+The [builtin default config](./config/default.yaml) only has special
+goals a handful of the most popular assets. With the `--config-file` flag,
+however, one can specify a YAML file that overrides these defaults and adds
+goals for other assets.
+
+Check out [coindesk/assets.go](./coindesk/assets.go) for a full list of
+supported assets. Keep in mind these have not been exhaustively tested, and
+it's likely that many will fail with the default configuration settings.
+
 ### "Theory"
 
 Given a pair of quotes taken at the start and end of some period,
@@ -39,8 +61,7 @@ $$ x = {{log(p_f) - log(p_e)} \over log(r)} $$
 
 ### Future Improvements
 
-* Support other assets available from Coindesk.
+* Add more default configurations for various assets.
-* Configurable projection milestones.
 * Allow projection by date, e.g. use the CDPR to calculate what the price
   would be on a particular date.
 * Log errors to a file.

bitcoinity/model_test.go

@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"testing"
 
-	"code.humancabbage.net/moonmath/bitcoinity"
+	"code.humancabbage.net/sam/moonmath/bitcoinity"
 )
 
 func TestUnmarshalGetTickerResponse(t *testing.T) {
@@ -21,3 +21,24 @@ func TestUnmarshalGetTickerResponse(t *testing.T) {
 
 //go:embed get_ticker.json
 var getTickerJson []byte
+
+func TestUnmarshalWebhookMessages(t *testing.T) {
+	var msgs []bitcoinity.Message
+	err := json.Unmarshal(capturedJson, &msgs)
+	if err != nil {
+		t.Errorf("failed to unmarshal webhook messages JSON: %v", err)
+	}
+	for _, msg := range msgs {
+		if msg.Event != "new_msg" {
+			continue
+		}
+		var payload bitcoinity.MarketPayload
+		err := json.Unmarshal(msg.Payload, &payload)
+		if err != nil {
+			t.Errorf("failed to unmarshal market payload JSON: %v", err)
+		}
+	}
+}
+
+//go:embed captured.json
+var capturedJson []byte

coindesk/asset_tickers.json

@@ -0,0 +1 @@
+{"statusCode":200,"message":"OK","data":{"BTC":{"iso":"BTC","name":"Bitcoin","slug":"bitcoin","change":{"percent":-6.3,"value":-4187.634882541},"ohlc":{"o":66436.26558132548,"h":66436.26558132548,"l":61526.78744328402,"c":62248.630698784444},"circulatingSupply":19658987,"marketCap":1223745021675.2043,"ts":1710898259000,"src":"tb"}}}

coindesk/assets.go

@@ -0,0 +1,327 @@
+package coindesk
+
+//goland:noinspection ALL
+const (
+	BTC      Asset = "BTC"
+	ETH      Asset = "ETH"
+	XRP      Asset = "XRP"
+	BCH      Asset = "BCH"
+	EOS      Asset = "EOS"
+	XLM      Asset = "XLM"
+	LTC      Asset = "LTC"
+	ADA      Asset = "ADA"
+	XMR      Asset = "XMR"
+	DASH     Asset = "DASH"
+	IOTA     Asset = "IOTA"
+	TRX      Asset = "TRX"
+	NEO      Asset = "NEO"
+	ETC      Asset = "ETC"
+	XEM      Asset = "XEM"
+	ZEC      Asset = "ZEC"
+	BTG      Asset = "BTG"
+	LSK      Asset = "LSK"
+	QTUM     Asset = "QTUM"
+	BSV      Asset = "BSV"
+	DOGE     Asset = "DOGE"
+	DCR      Asset = "DCR"
+	USDT     Asset = "USDT"
+	USDC     Asset = "USDC"
+	LINK     Asset = "LINK"
+	XTZ      Asset = "XTZ"
+	ZRX      Asset = "ZRX"
+	DAI      Asset = "DAI"
+	BAT      Asset = "BAT"
+	OXT      Asset = "OXT"
+	ALGO     Asset = "ALGO"
+	ATOM     Asset = "ATOM"
+	KNC      Asset = "KNC"
+	OMG      Asset = "OMG"
+	ANT      Asset = "ANT"
+	REP      Asset = "REP"
+	BAND     Asset = "BAND"
+	BTT      Asset = "BTT"
+	MANA     Asset = "MANA"
+	FET      Asset = "FET"
+	ICX      Asset = "ICX"
+	KAVA     Asset = "KAVA"
+	LRC      Asset = "LRC"
+	MKR      Asset = "MKR"
+	MLN      Asset = "MLN"
+	NANO     Asset = "NANO"
+	NMR      Asset = "NMR"
+	PAXG     Asset = "PAXG"
+	USDP     Asset = "USDP"
+	SC       Asset = "SC"
+	STORJ    Asset = "STORJ"
+	WAVES    Asset = "WAVES"
+	FIL      Asset = "FIL"
+	CVC      Asset = "CVC"
+	DNT      Asset = "DNT"
+	REN      Asset = "REN"
+	BNT      Asset = "BNT"
+	WBTC     Asset = "WBTC"
+	GRT      Asset = "GRT"
+	UNI      Asset = "UNI"
+	DOT      Asset = "DOT"
+	YFI      Asset = "YFI"
+	AAVE     Asset = "AAVE"
+	MATIC    Asset = "MATIC"
+	AMP      Asset = "AMP"
+	CELO     Asset = "CELO"
+	COMP     Asset = "COMP"
+	CRV      Asset = "CRV"
+	RLC      Asset = "RLC"
+	KSM      Asset = "KSM"
+	NKN      Asset = "NKN"
+	SHIB     Asset = "SHIB"
+	SKL      Asset = "SKL"
+	SNX      Asset = "SNX"
+	LUNC     Asset = "LUNC"
+	UMA      Asset = "UMA"
+	ICP      Asset = "ICP"
+	SOL      Asset = "SOL"
+	AVAX     Asset = "AVAX"
+	UST      Asset = "UST"
+	ENJ      Asset = "ENJ"
+	IOTX     Asset = "IOTX"
+	AXS      Asset = "AXS"
+	XYO      Asset = "XYO"
+	SUSHI    Asset = "SUSHI"
+	ANKR     Asset = "ANKR"
+	CHZ      Asset = "CHZ"
+	LPT      Asset = "LPT"
+	COTI     Asset = "COTI"
+	KEEP     Asset = "KEEP"
+	SAND     Asset = "SAND"
+	GALA     Asset = "GALA"
+	APE      Asset = "APE"
+	CRO      Asset = "CRO"
+	ACHP     Asset = "ACHP"
+	JASMY    Asset = "JASMY"
+	REQ      Asset = "REQ"
+	SLP      Asset = "SLP"
+	NEAR     Asset = "NEAR"
+	MBOX     Asset = "MBOX"
+	POLIS    Asset = "POLIS"
+	MOVR     Asset = "MOVR"
+	POLS     Asset = "POLS"
+	QUICK    Asset = "QUICK"
+	MINA     Asset = "MINA"
+	IMX      Asset = "IMX"
+	XEC      Asset = "XEC"
+	NEXO     Asset = "NEXO"
+	RUNE     Asset = "RUNE"
+	QNT      Asset = "QNT"
+	VET      Asset = "VET"
+	CAKE     Asset = "CAKE"
+	BNB      Asset = "BNB"
+	THETA    Asset = "THETA"
+	HBAR     Asset = "HBAR"
+	FTM      Asset = "FTM"
+	RVN      Asset = "RVN"
+	ZIL      Asset = "ZIL"
+	DGB      Asset = "DGB"
+	FTT      Asset = "FTT"
+	ENS      Asset = "ENS"
+	WRX      Asset = "WRX"
+	WAXP     Asset = "WAXP"
+	EGLD     Asset = "EGLD"
+	BUSD     Asset = "BUSD"
+	CEL      Asset = "CEL"
+	OP       Asset = "OP"
+	LUNA     Asset = "LUNA"
+	RAY      Asset = "RAY"
+	FLOW     Asset = "FLOW"
+	AUDIO    Asset = "AUDIO"
+	CKB      Asset = "CKB"
+	VGX      Asset = "VGX"
+	YGG      Asset = "YGG"
+	CHR      Asset = "CHR"
+	STMX     Asset = "STMX"
+	SXP      Asset = "SXP"
+	INJ      Asset = "INJ"
+	JOE      Asset = "JOE"
+	POLY     Asset = "POLY"
+	STX      Asset = "STX"
+	SFP      Asset = "SFP"
+	FARM     Asset = "FARM"
+	XVG      Asset = "XVG"
+	CLV      Asset = "CLV"
+	WOO      Asset = "WOO"
+	GLMR     Asset = "GLMR"
+	STEEM    Asset = "STEEM"
+	RARE     Asset = "RARE"
+	IDEX     Asset = "IDEX"
+	SRM      Asset = "SRM"
+	PYR      Asset = "PYR"
+	MIR      Asset = "MIR"
+	SYS      Asset = "SYS"
+	ALPACA   Asset = "ALPACA"
+	QSP      Asset = "QSP"
+	SCRT     Asset = "SCRT"
+	SUN      Asset = "SUN"
+	APT      Asset = "APT"
+	MASK     Asset = "MASK"
+	DYDX     Asset = "DYDX"
+	CVX      Asset = "CVX"
+	GMT      Asset = "GMT"
+	CTSI     Asset = "CTSI"
+	METIS    Asset = "METIS"
+	FORTH    Asset = "FORTH"
+	RBN      Asset = "RBN"
+	SAMO     Asset = "SAMO"
+	SPELL    Asset = "SPELL"
+	LDO      Asset = "LDO"
+	ARB      Asset = "ARB"
+	BLUR     Asset = "BLUR"
+	GAS      Asset = "GAS"
+	RACA     Asset = "RACA"
+	BABYDOGE Asset = "BABYDOGE"
+	FLOKI    Asset = "FLOKI"
+	HOT      Asset = "HOT"
+	BFC      Asset = "BFC"
+	KISHU    Asset = "KISHU"
+	ELON     Asset = "ELON"
+	SAITAMA  Asset = "SAITAMA"
+	REEF     Asset = "REEF"
+	CEEK     Asset = "CEEK"
+	ATLAS    Asset = "ATLAS"
+	LOOKS    Asset = "LOOKS"
+	WIN      Asset = "WIN"
+	ONE      Asset = "ONE"
+	DENT     Asset = "DENT"
+	GST      Asset = "GST"
+	TWT      Asset = "TWT"
+	HNT      Asset = "HNT"
+	AGLD     Asset = "AGLD"
+	BTRST    Asset = "BTRST"
+	ETHW     Asset = "ETHW"
+	ILV      Asset = "ILV"
+	RARI     Asset = "RARI"
+	STG      Asset = "STG"
+	SYN      Asset = "SYN"
+	TOKE     Asset = "TOKE"
+	BLZ      Asset = "BLZ"
+	FLR      Asset = "FLR"
+	FIS      Asset = "FIS"
+	GNS      Asset = "GNS"
+	ID       Asset = "ID"
+	PEPE     Asset = "PEPE"
+	DIA      Asset = "DIA"
+	TLM      Asset = "TLM"
+	XCN      Asset = "XCN"
+	BIT      Asset = "BIT"
+	RPL      Asset = "RPL"
+	RNDR     Asset = "RNDR"
+	ONEINCH  Asset = "1INCH"
+	BAL      Asset = "BAL"
+	T        Asset = "T"
+	GNO      Asset = "GNO"
+	ASTR     Asset = "ASTR"
+	GLM      Asset = "GLM"
+	OCEAN    Asset = "OCEAN"
+	BICO     Asset = "BICO"
+	CELR     Asset = "CELR"
+	LQTY     Asset = "LQTY"
+	TRAC     Asset = "TRAC"
+	ZEN      Asset = "ZEN"
+	API3     Asset = "API3"
+	PLA      Asset = "PLA"
+	AXL      Asset = "AXL"
+	HFT      Asset = "HFT"
+	MC       Asset = "MC"
+	C98      Asset = "C98"
+	GAL      Asset = "GAL"
+	GTC      Asset = "GTC"
+	RAD      Asset = "RAD"
+	POWR     Asset = "POWR"
+	POND     Asset = "POND"
+	ALICE    Asset = "ALICE"
+	TRU      Asset = "TRU"
+	OGN      Asset = "OGN"
+	DAR      Asset = "DAR"
+	BADGER   Asset = "BADGER"
+	GHST     Asset = "GHST"
+	LCX      Asset = "LCX"
+	ARPA     Asset = "ARPA"
+	MXC      Asset = "MXC"
+	PERP     Asset = "PERP"
+	LOKA     Asset = "LOKA"
+	BOBA     Asset = "BOBA"
+	BOND     Asset = "BOND"
+	ALCX     Asset = "ALCX"
+	KP3R     Asset = "KP3R"
+	TON      Asset = "TON"
+	AR       Asset = "AR"
+	AVA      Asset = "AVA"
+	BONE     Asset = "BONE"
+	BONK     Asset = "BONK"
+	CORE     Asset = "CORE"
+	CSPR     Asset = "CSPR"
+	DG       Asset = "DG"
+	ERN      Asset = "ERN"
+	FXS      Asset = "FXS"
+	GMX      Asset = "GMX"
+	GT       Asset = "GT"
+	GUSD     Asset = "GUSD"
+	HMT      Asset = "HMT"
+	HT       Asset = "HT"
+	KCS      Asset = "KCS"
+	KLAY     Asset = "KLAY"
+	LEO      Asset = "LEO"
+	MPL      Asset = "MPL"
+	OKB      Asset = "OKB"
+	PIT      Asset = "PIT"
+	OSMO     Asset = "OSMO"
+	RLY      Asset = "RLY"
+	SANTOS   Asset = "SANTOS"
+	SUI      Asset = "SUI"
+	SWEAT    Asset = "SWEAT"
+	TUSD     Asset = "TUSD"
+	TVK      Asset = "TVK"
+	UNFI     Asset = "UNFI"
+	USDD     Asset = "USDD"
+	VLX      Asset = "VLX"
+	WEMIX    Asset = "WEMIX"
+	XDC      Asset = "XDC"
+	XRD      Asset = "XRD"
+	FB       Asset = "FB"
+	BRISE    Asset = "BRISE"
+	KAS      Asset = "KAS"
+	XEN      Asset = "XEN"
+	HAM      Asset = "HAM"
+	TAMA     Asset = "TAMA"
+	KDA      Asset = "KDA"
+	CFX      Asset = "CFX"
+	VRA      Asset = "VRA"
+	BDX      Asset = "BDX"
+	RDNT     Asset = "RDNT"
+	WLD      Asset = "WLD"
+	AGIX     Asset = "AGIX"
+	PYUSD    Asset = "PYUSD"
+	MOON     Asset = "MOON"
+	SEI      Asset = "SEI"
+	AKT      Asset = "AKT"
+	MAGIC    Asset = "MAGIC"
+	SNT      Asset = "SNT"
+	ALPHA    Asset = "ALPHA"
+	ALI      Asset = "ALI"
+	CQT      Asset = "CQT"
+	HIGH     Asset = "HIGH"
+	AERGO    Asset = "AERGO"
+	GODS     Asset = "GODS"
+	ZBC      Asset = "ZBC"
+	ACA      Asset = "ACA"
+	MDT      Asset = "MDT"
+	LIT      Asset = "LIT"
+	QI       Asset = "QI"
+	AURORA   Asset = "AURORA"
+	TOMI     Asset = "TOMI"
+	XCH      Asset = "XCH"
+	MANTA    Asset = "MANTA"
+	PYTH     Asset = "PYTH"
+	STRK     Asset = "STRK"
+	ETHFI    Asset = "ETHFI"
+	TIA      Asset = "TIA"
+	EETH     Asset = "EETH"
+)

coindesk/lib_test.go

@@ -1,29 +0,0 @@
-package coindesk_test
-
-import (
-	"context"
-	"fmt"
-	"testing"
-	"time"
-
-	"code.humancabbage.net/moonmath/coindesk"
-)
-
-func TestXxx(t *testing.T) {
-	now := time.Now()
-	then := now.Add(time.Duration(-24) * time.Hour)
-
-	values, err := coindesk.GetPriceValues(context.Background(), coindesk.BTC, then, now)
-	if err != nil {
-		t.Errorf("test failure: %v", err)
-	}
-	_ = values
-	fmt.Println()
-
-	tickers, err := coindesk.GetAssetTickers(context.Background(), coindesk.BTC, coindesk.ETH)
-	if err != nil {
-		t.Errorf("test failure: %v", err)
-	}
-	_ = tickers
-	fmt.Println()
-}

coindesk/model.go

@@ -10,13 +10,6 @@ import (
 // Asset is a cryptocurrency, like Bitcoin, Ethereum, etc.
 type Asset string
 
-const (
-	// BTC is the Bitcoin asset.
-	BTC Asset = "BTC"
-	// ETH is the Ethereum asset.
-	ETH Asset = "ETH"
-)
-
 // Response represents the general top-level format of Coindesk API responses.
 type Response[T any] struct {
 	StatusCode int    `json:"statusCode"`

coindesk/model_test.go

@@ -0,0 +1,31 @@
+package coindesk_test
+
+import (
+	_ "embed"
+	"encoding/json"
+	"testing"
+
+	"code.humancabbage.net/sam/moonmath/coindesk"
+)
+
+func TestUnmarshalPriceValues(t *testing.T) {
+	testUnmarshalResponse[coindesk.PriceValues](t, priceValuesJson)
+}
+
+func TestUnmarshalAssetTickers(t *testing.T) {
+	testUnmarshalResponse[coindesk.AssetTickers](t, assetTickersJson)
+}
+
+func testUnmarshalResponse[T any](t *testing.T, jsonBytes []byte) {
+	var resp coindesk.Response[T]
+	err := json.Unmarshal(jsonBytes, &resp)
+	if err != nil {
+		t.Errorf("failed to unmarshal JSON: %v", err)
+	}
+}
+
+//go:embed price_values.json
+var priceValuesJson []byte
+
+//go:embed asset_tickers.json
+var assetTickersJson []byte

coindesk/price_values.json

@@ -0,0 +1 @@
+{"statusCode":200,"message":"OK","data":{"iso":"BTC","name":"Bitcoin","slug":"bitcoin","ingestionStart":"2014-11-03","interval":"15m","src":"tb","entries":[[1710548099000,69784.6599201257],[1710548999000,69907.6435505413],[1710549899000,69735.0244223474],[1710550799000,69608.3777481736],[1710551699000,69643.5872644923],[1710552599000,69389.4883714119],[1710553499000,69350.2996335944],[1710554399000,69241.2719800575],[1710555299000,69110.5930246779],[1710556199000,69046.5706710773],[1710557099000,69209.8770692447],[1710557999000,69069.0204183649],[1710558899000,69317.6327892521],[1710559799000,69175.2057532632],[1710560699000,69237.706076427],[1710561599000,69206.0448006493],[1710562499000,69077.8264056849],[1710563399000,69161.0784263752],[1710564299000,68903.1424009851],[1710565199000,68994.5234182921],[1710566099000,68754.9875193438],[1710566999000,68784.6200740683],[1710567899000,69002.1375650817],[1710568799000,68975.0878307215],[1710569699000,69045.2310776643],[1710570599000,69025.7239355934],[1710571499000,69068.3988090268],[1710572399000,69185.2444741912],[1710573299000,69246.5439171529],[1710574199000,69278.2574941136],[1710575099000,69407.4780576693],[1710575999000,69406.4527711537],[1710576899000,69296.4923727422],[1710577799000,69165.948416751],[1710578699000,69258.7912250956],[1710579599000,69017.1102984366],[1710580499000,69014.4480481396],[1710581399000,69099.3096696255],[1710582299000,69011.246072562],[1710583199000,68942.5343294262],[1710584099000,68697.8235476743],[1710584999000,68597.1119491188],[1710585899000,68532.2931864276],[1710586799000,68420.1712986066],[1710587699000,68354.8847177761],[1710588599000,67949.5219527423],[1710589499000,68327.2101380853],[1710590399000,68260.6576285653],[1710591299000,68192.7968537126],[1710592199000,68302.103987459],[1710593099000,68096.4362930929],[1710593999000,67906.8863092216],[1710594899000,67982.183818933],[1710595799000,68073.3862259585],[1710596699000,67891.8144823227],[1710597599000,67706.923652975],[1710598499000,67942.4174766702],[1710599399000,67848.3672161555],[1710600299000,67975.9404080798],[1710601199000,68177.0804610881],[1710602099000,67994.5903423281],[1710602999000,68024.8507494152],[1710603899000,68201.8594048759],[1710604799000,68358.4188016011],[1710605699000,68239.5960888028],[1710606599000,68224.3438496054],[1710607499000,68293.736596961],[1710608399000,68158.4057208716],[1710609299000,68114.4234280406],[1710610199000,67829.2127954109],[1710611099000,67630.8190396486],[1710611999000,67220.3085172518],[1710612899000,67043.4786652409],[1710613799000,66906.1713676385],[1710614699000,66871.2079622553],[1710615599000,67015.8311895788],[1710616499000,67458.766887969],[1710617399000,67493.9852796663],[1710618299000,67354.2332686561],[1710619199000,66916.4704143146],[1710620099000,66995.7196236024],[1710620999000,67046.4965828003],[1710621899000,67402.0503271179],[1710622799000,67087.3064846683],[1710623699000,66943.270112864],[1710624599000,66268.8656111216],[1710625499000,66290.9133774055],[1710626399000,66189.3483322972],[1710627299000,66073.8513767399],[1710628199000,66433.8329094007],[1710629099000,66549.3543050487],[1710629999000,66331.1108451565],[1710630899000,65376.9600942977],[1710631799000,65280.3933464042],[1710632699000,65598.1187015513],[1710633599000,65261.5180497119],[1710634499000,65780.8283123471]]}}

config/config.go

@@ -0,0 +1,107 @@
+package config
+
+import (
+	_ "embed"
+	"slices"
+	"time"
+
+	"code.humancabbage.net/sam/moonmath/coindesk"
+	"code.humancabbage.net/sam/moonmath/moon"
+	"github.com/knadh/koanf/parsers/yaml"
+	"github.com/knadh/koanf/providers/file"
+	"github.com/knadh/koanf/providers/rawbytes"
+	"github.com/knadh/koanf/providers/structs"
+	"github.com/knadh/koanf/v2"
+)
+
+var k = koanf.New(".")
+
+func Load(filePath string) (r Root, err error) {
+	err = k.Load(structs.Provider(Default, "koanf"), nil)
+	if err != nil {
+		return
+	}
+	if filePath != "" {
+		err = k.Load(file.Provider(filePath), yaml.Parser())
+		if err != nil {
+			return
+		}
+	}
+	err = k.Unmarshal("", &r)
+
+	return
+}
+
+var Default Root
+
+type Root struct {
+	Defaults Asset                    `koanf:"defaults"`
+	Assets   map[coindesk.Asset]Asset `koanf:"assets"`
+}
+
+type Asset struct {
+	Asset         coindesk.Asset      `koanf:"asset"`
+	Goals         []moon.Goal         `koanf:"goals"`
+	ConstantBases []moon.ConstantBase `koanf:"constantBases"`
+	RelativeBases []moon.RelativeBase `koanf:"relativeBases"`
+}
+
+func (r Root) ForAsset(a coindesk.Asset) (cfg Asset) {
+	cfg = merge(r.Assets[a], r.Defaults)
+	cfg.Asset = a
+	return
+}
+
+func merge(dst, src Asset) Asset {
+	if len(dst.Goals) == 0 {
+		dst.Goals = src.Goals
+	}
+	if len(dst.ConstantBases) == 0 {
+		dst.ConstantBases = src.ConstantBases
+	}
+	if len(dst.RelativeBases) == 0 {
+		dst.RelativeBases = src.RelativeBases
+	}
+	return dst
+}
+
+// GetBases returns the concatenation of the constant and relative bases, sorted
+// from most recent to least recent in time.
+func GetBases(d *Asset) (bases []moon.Base) {
+	for _, b := range d.ConstantBases {
+		bases = append(bases, b)
+	}
+	for _, b := range d.RelativeBases {
+		bases = append(bases, b)
+	}
+	now := time.Now()
+	slices.SortFunc(bases, func(a, b moon.Base) int {
+		aTime := a.From(now)
+		bTime := b.From(now)
+		aFirst := aTime.Before(bTime)
+		bFirst := bTime.Before(aTime)
+		switch {
+		case aFirst:
+			return 1
+		case bFirst:
+			return -1
+		}
+		return 0
+	})
+	return
+}
+
+//go:embed default.yaml
+var defaultYamlBytes []byte
+
+func init() {
+	var k = koanf.New(".")
+	err := k.Load(rawbytes.Provider(defaultYamlBytes), yaml.Parser())
+	if err != nil {
+		panic(err)
+	}
+	err = k.Unmarshal("", &Default)
+	if err != nil {
+		panic(err)
+	}
+}

config/config_test.go

@@ -0,0 +1,10 @@
+package config_test
+
+import (
+	"testing"
+)
+
+func TestDefault(t *testing.T) {
+	// config.Default is parsed in config.init(), which panics on error.
+	// so just getting this far means that at least it parsed successfully.
+}

config/default.yaml

@@ -0,0 +1,142 @@
+defaults:
+  goals:
+  - name: $100k
+    value: 100000
+  - name: $150k
+    value: 150000
+  - name: $200k
+    value: 200000
+  - name: $250k
+    value: 250000
+  - name: $300k
+    value: 300000
+  - name: $500k
+    value: 500000
+  - name: $1m
+    value: 1000000
+  relativeBases:
+  - name: Month
+    offset: -720h0m0s
+  - name: Quarter
+    offset: -2160h0m0s
+  - name: Half-Year
+    offset: -4368h0m0s
+  - name: Year
+    offset: -8760h0m0s
+  constantBases:
+  - name: 2020-
+    time: 2019-12-31T16:00:00-08:00
+  - name: 2017-
+    time: 2016-12-31T16:00:00-08:00
+  - name: 2013-
+    time: 2012-12-31T16:00:00-08:00
+    startingPrice: 13.30
+  - name: 2011-
+    time: 2010-12-31T16:00:00-08:00
+    startingPrice: 0.30
+
+assets:
+  ETH:
+    goals:
+    - name: $5k
+      value: 5000
+    - name: $7.5k
+      value: 7500
+    - name: $10k
+      value: 10000
+    - name: $15k
+      value: 15000
+    - name: $20k
+      value: 20000
+    - name: $25k
+      value: 25000
+    constantBases:
+    - name: 2020-
+      time: 2019-12-31T16:00:00-08:00
+    - name: 2017-
+      time: 2016-12-31T16:00:00-08:00
+  LTC:
+    goals:
+    - name: $100
+      value: 100
+    - name: $150
+      value: 150
+    - name: $200
+      value: 200
+    - name: $300
+      value: 300
+    - name: $500
+      value: 500
+    - name: $1k
+      value: 1000
+    constantBases:
+    - name: 2021-
+      time: 2020-12-31T16:00:00-08:00
+  SOL:
+    goals:
+    - name: $250
+      value: 250
+    - name: $375
+      value: 375
+    - name: $500
+      value: 500
+    - name: $750
+      value: 750
+    - name: $1k
+      value: 1000
+    - name: $2k
+      value: 2000
+    constantBases:
+    - name: 2022-
+      time: 2021-12-31T16:00:00-08:00
+  XRP:
+    goals:
+    - name: $1
+      value: 1
+    - name: $1.5
+      value: 1.5
+    - name: $2
+      value: 2
+    - name: $3
+      value: 3
+    - name: $5
+      value: 5
+    - name: $10
+      value: 10
+    constantBases:
+    - name: 2022-
+      time: 2021-12-31T16:00:00-08:00
+  DOGE:
+    goals:
+    - name: $1
+      value: 1
+    - name: $1.5
+      value: 1.5
+    - name: $2
+      value: 2
+    - name: $3
+      value: 3
+    - name: $5
+      value: 5
+    - name: $10
+      value: 10
+    constantBases:
+    - name: 2022-
+      time: 2021-12-31T16:00:00-08:00
+  ADA:
+    goals:
+    - name: $1
+      value: 1
+    - name: $1.5
+      value: 1.5
+    - name: $2
+      value: 2
+    - name: $3
+      value: 3
+    - name: $5
+      value: 5
+    - name: $10
+      value: 10
+    constantBases:
+    - name: 2022-
+      time: 2021-12-31T16:00:00-08:00

go.mod

@@ -1,12 +1,18 @@
-module code.humancabbage.net/moonmath
+module code.humancabbage.net/sam/moonmath
 
 go 1.22.1
 
 require (
+	github.com/alecthomas/kong v0.9.0
 	github.com/carlmjohnson/requests v0.23.5
 	github.com/charmbracelet/bubbles v0.18.0
 	github.com/charmbracelet/bubbletea v0.25.0
 	github.com/charmbracelet/lipgloss v0.10.0
+	github.com/knadh/koanf/parsers/yaml v0.1.0
+	github.com/knadh/koanf/providers/file v0.1.0
+	github.com/knadh/koanf/providers/rawbytes v0.1.0
+	github.com/knadh/koanf/providers/structs v0.1.0
+	github.com/knadh/koanf/v2 v2.1.0
 	github.com/sourcegraph/conc v0.3.0
 	golang.org/x/net v0.22.0
 )
@@ -14,19 +20,26 @@ require (
 require (
 	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
 	github.com/containerd/console v1.0.4 // indirect
+	github.com/fatih/structs v1.1.0 // indirect
+	github.com/fsnotify/fsnotify v1.7.0 // indirect
+	github.com/go-viper/mapstructure/v2 v2.0.0-alpha.1 // indirect
+	github.com/knadh/koanf/maps v0.1.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-localereader v0.0.1 // indirect
 	github.com/mattn/go-runewidth v0.0.15 // indirect
+	github.com/mitchellh/copystructure v1.2.0 // indirect
+	github.com/mitchellh/reflectwalk v1.0.2 // indirect
 	github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect
 	github.com/muesli/cancelreader v0.2.2 // indirect
 	github.com/muesli/reflow v0.3.0 // indirect
 	github.com/muesli/termenv v0.15.2 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
-	go.uber.org/atomic v1.7.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
-	go.uber.org/multierr v1.9.0 // indirect
 	golang.org/x/sync v0.6.0 // indirect
 	golang.org/x/sys v0.18.0 // indirect
 	golang.org/x/term v0.18.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,3 +1,9 @@
+github.com/alecthomas/assert/v2 v2.6.0 h1:o3WJwILtexrEUk3cUVal3oiQY2tfgr/FHWiz/v2n4FU=
+github.com/alecthomas/assert/v2 v2.6.0/go.mod h1:Bze95FyfUr7x34QZrjL+XP+0qgp/zg8yS+TtBj1WA3k=
+github.com/alecthomas/kong v0.9.0 h1:G5diXxc85KvoV2f0ZRVuMsi45IrBgx9zDNGNj165aPA=
+github.com/alecthomas/kong v0.9.0/go.mod h1:Y47y5gKfHp1hDc7CH7OeXgLIpp+Q2m1Ni0L5s3bI8Os=
+github.com/alecthomas/repr v0.4.0 h1:GhI2A8MACjfegCPVq9f1FLvIBS+DrQ2KQBFZP1iFzXc=
+github.com/alecthomas/repr v0.4.0/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
 github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=
 github.com/aymanbagabas/go-osc52/v2 v2.0.1/go.mod h1:uYgXzlJ7ZpABp8OJ+exZzJJhRNQ2ASbcXHWsFqH8hp8=
 github.com/carlmjohnson/requests v0.23.5 h1:NPANcAofwwSuC6SIMwlgmHry2V3pLrSqRiSBKYbNHHA=
@@ -10,9 +16,33 @@ github.com/charmbracelet/lipgloss v0.10.0 h1:KWeXFSexGcfahHX+54URiZGkBFazf70JNMt
 github.com/charmbracelet/lipgloss v0.10.0/go.mod h1:Wig9DSfvANsxqkRsqj6x87irdy123SR4dOXlKa91ciE=
 github.com/containerd/console v1.0.4 h1:F2g4+oChYvBTsASRTz8NP6iIAi97J3TtSAsLbIFn4ro=
 github.com/containerd/console v1.0.4/go.mod h1:YynlIjWYF8myEu6sdkwKIvGQq+cOckRm6So2avqoYAk=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fatih/structs v1.1.0 h1:Q7juDM0QtcnhCpeyLGQKyg4TOIghuNXrkL32pHAUMxo=
+github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M=
+github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nosvA=
+github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM=
+github.com/go-viper/mapstructure/v2 v2.0.0-alpha.1 h1:TQcrn6Wq+sKGkpyPvppOz99zsMBaUOKXq6HSv655U1c=
+github.com/go-viper/mapstructure/v2 v2.0.0-alpha.1/go.mod h1:oJDH3BJKyqBA2TXFhDsKDGDTlndYOZ6rGS0BRZIxGhM=
+github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM=
+github.com/hexops/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg=
+github.com/knadh/koanf/maps v0.1.1 h1:G5TjmUh2D7G2YWf5SQQqSiHRJEjaicvU0KpypqB3NIs=
+github.com/knadh/koanf/maps v0.1.1/go.mod h1:npD/QZY3V6ghQDdcQzl1W4ICNVTkohC8E73eI2xW4yI=
+github.com/knadh/koanf/parsers/yaml v0.1.0 h1:ZZ8/iGfRLvKSaMEECEBPM1HQslrZADk8fP1XFUxVI5w=
+github.com/knadh/koanf/parsers/yaml v0.1.0/go.mod h1:cvbUDC7AL23pImuQP0oRw/hPuccrNBS2bps8asS0CwY=
+github.com/knadh/koanf/providers/file v0.1.0 h1:fs6U7nrV58d3CFAFh8VTde8TM262ObYf3ODrc//Lp+c=
+github.com/knadh/koanf/providers/file v0.1.0/go.mod h1:rjJ/nHQl64iYCtAW2QQnF0eSmDEX/YZ/eNFj5yR6BvA=
+github.com/knadh/koanf/providers/rawbytes v0.1.0 h1:dpzgu2KO6uf6oCb4aP05KDmKmAmI51k5pe8RYKQ0qME=
+github.com/knadh/koanf/providers/rawbytes v0.1.0/go.mod h1:mMTB1/IcJ/yE++A2iEZbY1MLygX7vttU+C+S/YmPu9c=
+github.com/knadh/koanf/providers/structs v0.1.0 h1:wJRteCNn1qvLtE5h8KQBvLJovidSdntfdyIbbCzEyE0=
+github.com/knadh/koanf/providers/structs v0.1.0/go.mod h1:sw2YZ3txUcqA3Z27gPlmmBzWn1h8Nt9O6EP/91MkcWE=
+github.com/knadh/koanf/v2 v2.1.0 h1:eh4QmHHBuU8BybfIJ8mB8K8gsGCD/AUQTdwGq/GzId8=
+github.com/knadh/koanf/v2 v2.1.0/go.mod h1:4mnTRbZCK+ALuBXHZMjDfG9y714L7TykVnZkXbMU3Es=
+github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0=
+github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
 github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
@@ -22,6 +52,10 @@ github.com/mattn/go-localereader v0.0.1/go.mod h1:8fBrzywKY7BI3czFoHkuzRoWE9C+Ei
 github.com/mattn/go-runewidth v0.0.12/go.mod h1:RAqKPSqVFrSLVXbA8x7dzmKdmGzieGRCM46jaSJTDAk=
 github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
 github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/mitchellh/copystructure v1.2.0 h1:vpKXTN4ewci03Vljg/q9QvCGUDttBOGBIa15WveJJGw=
+github.com/mitchellh/copystructure v1.2.0/go.mod h1:qLl+cE2AmVv+CoeAwDPye/v+N2HKCj9FbZEVFJRxO9s=
+github.com/mitchellh/reflectwalk v1.0.2 h1:G2LzWKi524PWgd3mLHV8Y5k7s6XUvT0Gef6zxSIeXaQ=
+github.com/mitchellh/reflectwalk v1.0.2/go.mod h1:mSTlrgnPZtwu0c4WaC2kGObEpuNDbx0jmZXqmk4esnw=
 github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 h1:ZK8zHtRHOkbHy6Mmr5D264iyp3TiX5OmNcI5cIARiQI=
 github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6/go.mod h1:CJlz5H+gyd6CUWT45Oy4q24RdLyn7Md9Vj2/ldJBSIo=
 github.com/muesli/cancelreader v0.2.2 h1:3I4Kt4BQjOR54NavqnDogx/MIoWBFa0StPA8ELUXHmA=
@@ -36,16 +70,14 @@ github.com/rivo/uniseg v0.1.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJ
 github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
 github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
+github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
 github.com/sourcegraph/conc v0.3.0 h1:OQTbbt6P72L20UqAkXXuLOj79LfEanQ+YQFNpLA9ySo=
 github.com/sourcegraph/conc v0.3.0/go.mod h1:Sdozi7LEKbFPqYX2/J+iBAM6HpqSLTASQIKqDmF7Mt0=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
-go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
+go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
-go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
+go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
-go.uber.org/multierr v1.9.0 h1:7fIwc/ZtS0q++VgcfqFDxSBZVv/Xo49/SYnDFupUwlI=
-go.uber.org/multierr v1.9.0/go.mod h1:X2jQV1h+kxSjClGpnseKVIxpmcjrj7MNnI0bnlfKTVQ=
 golang.org/x/net v0.22.0 h1:9sGLhx7iRIHEiX0oAJ3MRZMUCElJgy7Br1nO+AMN3Tc=
 golang.org/x/net v0.22.0/go.mod h1:JKghWKKOSdJwpW2GEx0Ja7fmaKnMsbu+MWVZTokSYmg=
 golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
@@ -58,5 +90,8 @@ golang.org/x/term v0.18.0 h1:FcHjZXDMxI8mM3nwhX9HlKop4C0YQvCVCdwYl2wOtE8=
 golang.org/x/term v0.18.0/go.mod h1:ILwASektA3OnRv7amZ1xhE/KTR+u50pbXfZ03+6Nx58=
 golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

moon/moon.go

@@ -2,31 +2,37 @@ package moon
 
 import (
 	"context"
+	"errors"
+	"fmt"
 	"math"
 	"time"
 
-	"code.humancabbage.net/moonmath/coindesk"
+	"code.humancabbage.net/sam/moonmath/coindesk"
 	"github.com/sourcegraph/conc/pool"
 )
 
 type Math struct {
+	Asset        coindesk.Asset
 	CurrentPrice coindesk.Price
 	Columns      []Column
-	Goals        []float64
+	Goals        []Goal
+	Labels       []string
 }
 
-func NewMath(goals []float64, bases []Base) (m Math) {
+func NewMath(asset coindesk.Asset, goals []Goal, bases []Base) (m Math) {
-	if goals == nil {
+	if goals == nil || bases == nil {
-		goals = DefaultGoals
+		panic("goals and bases must be set")
-	}
-	if bases == nil {
-		bases = DefaultBases
 	}
+	m.Asset = asset
 	m.Goals = goals
+	m.Labels = []string{"Starting", "CDPR"}
 	m.Columns = make([]Column, len(bases))
 	for i := range bases {
 		m.Columns[i].Base = bases[i]
 	}
+	for i := range goals {
+		m.Labels = append(m.Labels, goals[i].Name)
+	}
 	return
 }
 
@@ -43,7 +49,7 @@ type Projection struct {
 }
 
 func ProjectDates(
-	from time.Time, currentPrice float64, cdpr float64, goals []float64,
+	from time.Time, currentPrice float64, cdpr float64, goals []Goal,
 ) (p Projection) {
 	if cdpr <= 0 {
 		return
@@ -51,7 +57,7 @@ func ProjectDates(
 	logP := math.Log(currentPrice)
 	logR := math.Log(cdpr)
 	for _, goal := range goals {
-		daysToGo := (math.Log(goal) - logP) / logR
+		daysToGo := (math.Log(goal.Value) - logP) / logR
 		date := from.Add(time.Hour * 24 * time.Duration(daysToGo))
 		p.Dates = append(p.Dates, date)
 	}
@@ -60,37 +66,20 @@ func ProjectDates(
 }
 
 func (m *Math) Refresh(ctx context.Context) (err error) {
-	resp, err := coindesk.GetAssetTickers(ctx, coindesk.BTC)
+	resp, err := coindesk.GetAssetTickers(ctx, m.Asset)
 	if err != nil {
 		return
 	}
-	m.CurrentPrice = resp.Data[coindesk.BTC].OHLC.Closing
+	m.CurrentPrice = resp.Data[m.Asset].OHLC.Closing
 
 	tasks := pool.New().WithErrors()
 	tasks.WithMaxGoroutines(len(m.Columns))
 	//tasks.WithMaxGoroutines(1)
 	now := time.Now()
-
 	for i := range m.Columns {
 		c := &m.Columns[i]
 		tasks.Go(func() error {
-			c.StartingDate = c.Base.From(now)
+			return c.project(ctx, m, now)
-			nextDay := c.StartingDate.Add(time.Hour * 24)
-			resp, err := coindesk.GetPriceValues(ctx,
-				coindesk.BTC, c.StartingDate, nextDay)
-			if err != nil {
-				return err
-			}
-			c.StartingPrice = resp.Data.Entries[0].Price
-			c.Gain = float64(m.CurrentPrice) / float64(c.StartingPrice)
-			days := now.Sub(c.StartingDate).Hours() / 24
-			c.CDPR = CDPR(days, c.Gain)
-			if c.CDPR > 1 {
-				c.Projections = ProjectDates(now, float64(m.CurrentPrice), c.CDPR, m.Goals)
-			} else {
-				c.Projections.Dates = nil
-			}
-			return nil
 		})
 	}
 	err = tasks.Wait()
@@ -107,58 +96,96 @@ type Column struct {
 	Projections   Projection
 }
 
-var DefaultGoals = []float64{
+func (c *Column) project(ctx context.Context, m *Math, now time.Time) (err error) {
-	100000,
+	err = c.fillStartingPrice(ctx, m.Asset, now)
-	150000,
+	if err != nil {
-	200000,
+		return
-	250000,
+	}
-	300000,
+
-	500000,
+	c.Gain = float64(m.CurrentPrice) / float64(c.StartingPrice)
-	1000000,
+	days := now.Sub(c.StartingDate).Hours() / 24
+	c.CDPR = CDPR(days, c.Gain)
+	c.Projections = ProjectDates(
+		now, float64(m.CurrentPrice),
+		c.CDPR, m.Goals,
+	)
+	return
 }
 
-var DefaultBases = []Base{
+func (c *Column) fillStartingPrice(
-	RelativeBase{"Month", time.Duration(-30) * time.Hour * 24},
+	ctx context.Context, asset coindesk.Asset, now time.Time,
-	RelativeBase{"Quarter", time.Duration(-90) * time.Hour * 24},
+) error {
-	RelativeBase{"Half-Year", time.Duration(-182) * time.Hour * 24},
+	// if base provides a hardcoded starting price, use it
-	RelativeBase{"Year", time.Duration(-365) * time.Hour * 24},
+	c.StartingDate = c.Base.From(now)
-	ConstantBase{"2020-", time.Unix(1577836800, 0)},
+	c.StartingPrice = coindesk.Price(c.Base.GetStartingPrice())
-	ConstantBase{"2019-", time.Unix(1546300800, 0)},
+	if c.StartingPrice != 0 {
-	ConstantBase{"2018-", time.Unix(1514764800, 0)},
+		return nil
-	ConstantBase{"2017-", time.Unix(1483228800, 0)},
+	}
+
+	// otherwise, look up the starting price via Coindesk
+	nextDay := c.StartingDate.Add(time.Hour * 24)
+	resp, err := coindesk.GetPriceValues(ctx, asset, c.StartingDate, nextDay)
+	if err != nil {
+		err = fmt.Errorf("getting price for %s on %v: %w",
+			asset, c.StartingDate, err)
+		return err
+	}
+	if len(resp.Data.Entries) == 0 {
+		c.Projections.Dates = nil
+		return errEmptyPriceEntries
+	}
+	c.StartingPrice = resp.Data.Entries[0].Price
+	return nil
+}
+
+var errEmptyPriceEntries = errors.New("price values response has no entries")
+
+type Goal struct {
+	Name  string  `koanf:"name"`
+	Value float64 `koanf:"value"`
 }
 
 // Base is a temporal point of comparison used for price projection.
 type Base interface {
 	From(now time.Time) time.Time
-	Name() string
+	Label() string
+	GetStartingPrice() float64
 }
 
 // ConstantBase is a base that is a constant time, e.g. 2020-01-01.
 type ConstantBase struct {
-	name string
+	Name          string    `koanf:"name"`
-	time time.Time
+	Time          time.Time `koanf:"time"`
+	StartingPrice float64   `koanf:"startingPrice"`
 }
 
 func (cb ConstantBase) From(_ time.Time) time.Time {
-	return cb.time
+	return cb.Time
 }
 
-func (cb ConstantBase) Name() string {
+func (cb ConstantBase) Label() string {
-	return cb.name
+	return cb.Name
 }
 
-// RelativeBase is a base that is relative, e.g. "90 days ago."
+func (cb ConstantBase) GetStartingPrice() float64 {
+	return cb.StartingPrice
+}
+
+// RelativeBase is a base that is relative, e.g. "90 days ago".
 type RelativeBase struct {
-	name   string
+	Name   string        `koanf:"name"`
-	offset time.Duration
+	Offset time.Duration `koanf:"offset"`
 }
 
 func (rb RelativeBase) From(now time.Time) time.Time {
-	then := now.Add(time.Duration(rb.offset))
+	then := now.Add(rb.Offset)
 	return then
 }
 
-func (rb RelativeBase) Name() string {
+func (rb RelativeBase) Label() string {
-	return rb.name
+	return rb.Name
+}
+
+func (rb RelativeBase) GetStartingPrice() float64 {
+	return 0
 }

moon/moon_test.go

@@ -4,20 +4,21 @@ import (
 	"testing"
 	"time"
 
-	"code.humancabbage.net/moonmath/moon"
+	"code.humancabbage.net/sam/moonmath/moon"
 )
 
 func TestCDPR(t *testing.T) {
 }
 
 func TestProjection(t *testing.T) {
-	p := moon.ProjectDates(time.Now(), 68900, 1.0055, []float64{
+	p := moon.ProjectDates(time.Now(), 68900, 1.0055, []moon.Goal{
-		100000,
+		{"$100k", 100000},
-		150000,
+		{"$150k", 150000},
-		200000,
+		{"$200k", 200000},
-		250000,
+		{"$250k", 250000},
-		300000,
+		{"$300k", 300000},
-		350000,
+		{"$500k", 500000},
+		{"$1m", 1000000},
 	})
 	_ = p
 }

moonmath.go

@@ -1,147 +1,84 @@
 package main
 
 import (
-	"context"
 	"fmt"
+	"io"
+	"log/slog"
 	"os"
-	"time"
+	"path/filepath"
+	"strings"
 
-	"code.humancabbage.net/moonmath/moon"
+	"code.humancabbage.net/sam/moonmath/coindesk"
-	"github.com/charmbracelet/bubbles/table"
+	"code.humancabbage.net/sam/moonmath/config"
+	"code.humancabbage.net/sam/moonmath/tui"
+	"github.com/alecthomas/kong"
 	tea "github.com/charmbracelet/bubbletea"
-	"github.com/charmbracelet/lipgloss"
 )
 
-var baseStyle = lipgloss.NewStyle().
+var CLI struct {
-	BorderStyle(lipgloss.NormalBorder()).
+	Asset      []string `short:"a" default:"BTC" help:"Asset(s) to project."`
-	BorderForeground(lipgloss.Color("240"))
+	ConfigFile string   `short:"c" help:"Path to YAML configuration file."`
-
+	Perf       bool     `help:"Display internal performance stats."`
-type model struct {
-	math moon.Math
-
-	prices      table.Model
-	projections table.Model
-}
-
-func (m model) Init() tea.Cmd {
-	return func() tea.Msg {
-		_ = m.math.Refresh(context.TODO())
-		return m.math
-	}
-}
-
-func initialModel() model {
-	math := moon.NewMath(nil, nil)
-
-	tableStyle := table.DefaultStyles()
-	tableStyle.Selected = lipgloss.NewStyle()
-	prices := table.New(
-		table.WithColumns([]table.Column{
-			{Title: "Price", Width: 9},
-		}),
-		table.WithHeight(1),
-		table.WithStyles(tableStyle),
-	)
-
-	projectionCols := []table.Column{
-		{Title: "Labels", Width: 8},
-	}
-	for i := range math.Columns {
-		projectionCols = append(projectionCols, table.Column{
-			Title: math.Columns[i].Base.Name(),
-			Width: 10,
-		})
-	}
-	projectionRows := make([]table.Row, len(math.Goals)+2)
-	for i := range projectionRows {
-		projectionRows[i] = make(table.Row, len(projectionCols))
-	}
-	projectionRows[0][0] = "Starting"
-	projectionRows[1][0] = "CDPR"
-	for i := range math.Goals {
-		projectionRows[i+2][0] = fmt.Sprintf("$%.0f", math.Goals[i])
-	}
-	projections := table.New(
-		table.WithColumns(projectionCols),
-		table.WithRows(projectionRows),
-		table.WithHeight(len(math.Goals)+2),
-		table.WithStyles(tableStyle),
-	)
-
-	return model{
-		math:        math,
-		prices:      prices,
-		projections: projections,
-	}
-}
-
-func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
-	switch msg := msg.(type) {
-	case moon.Math:
-		m.math = msg
-		refillPrice(&m)
-		refillProjections(&m)
-		return m, tea.Tick(time.Second*30, func(t time.Time) tea.Msg {
-			_ = m.math.Refresh(context.TODO())
-			return m.math
-		})
-	case tea.KeyMsg:
-		switch msg.String() {
-		case "ctrl+c", "q", "esc":
-			return m, tea.Quit
-		}
-	}
-	return m, nil
-}
-
-func refillPrice(m *model) {
-	rows := []table.Row{
-		[]string{fmt.Sprintf("$%0.2f", m.math.CurrentPrice)},
-	}
-	m.prices.SetRows(rows)
-}
-
-func refillProjections(m *model) {
-	rows := m.projections.Rows()
-
-	for col := range m.math.Columns {
-		_ = col
-		never := false
-		if m.math.Columns[col].CDPR <= 1 {
-			never = true
-		}
-
-		rows[0][col+1] = fmt.Sprintf("$%.2f", m.math.Columns[col].StartingPrice)
-		rows[1][col+1] = fmt.Sprintf("%.2f%%", (m.math.Columns[col].CDPR-1)*100)
-		for row := 0; row < len(m.math.Goals); row++ {
-			var cell string
-			if never {
-				cell = "NEVER!!!!!"
-			} else {
-				cell = m.math.Columns[col].
-					Projections.Dates[row].
-					Format("2006-01-02")
-			}
-			rows[row+2][col+1] = cell
-		}
-	}
-	m.projections.SetRows(rows)
-}
-
-func (m model) View() string {
-	var s string
-	s += lipgloss.JoinHorizontal(
-		lipgloss.Top,
-		baseStyle.Render(m.prices.View()),
-		baseStyle.Render(m.projections.View()),
-	)
-	return s + "\n"
 }
 
 func main() {
-	p := tea.NewProgram(initialModel())
+	logFile := setupLogging()
+	defer func() {
+		_ = logFile.Close()
+	}()
+	ctx := kong.Parse(&CLI)
+	if ctx.Error != nil {
+		fail(ctx.Error)
+	}
+	allCfg, err := config.Load(CLI.ConfigFile)
+	if err != nil {
+		fail(err)
+	}
+	var assets []coindesk.Asset
+	for i := range CLI.Asset {
+		asset := coindesk.Asset(strings.ToUpper(CLI.Asset[i]))
+		assets = append(assets, asset)
+	}
+	m := tui.New(assets, allCfg, CLI.Perf)
+	p := tea.NewProgram(m,
+		tea.WithAltScreen(),
+		tea.WithFPS(30),
+	)
 	if _, err := p.Run(); err != nil {
-		fmt.Printf("program error: %v\n", err)
+		fail(err)
-		os.Exit(1)
 	}
 }
+
+func setupLogging() io.Closer {
+	homePath, err := os.UserHomeDir()
+	if err != nil {
+		panic(err)
+	}
+
+	programConfigPath := filepath.Join(homePath, ".moonmath")
+	err = os.MkdirAll(programConfigPath, 0755)
+	if err != nil {
+		panic(err)
+	}
+
+	errLogPath := filepath.Join(programConfigPath, "errors.log")
+	errLogFile, err := os.OpenFile(
+		errLogPath,
+		os.O_CREATE|os.O_APPEND|os.O_WRONLY,
+		0600,
+	)
+	if err != nil {
+		panic(err)
+	}
+
+	slog.SetDefault(slog.New(
+		slog.NewTextHandler(errLogFile, &slog.HandlerOptions{
+			Level: slog.LevelError,
+		})))
+	return errLogFile
+}
+
+func fail(err error) {
+	fmt.Printf("program error: %v\n", err)
+	os.Exit(1)
+}

tui/asset/asset.go

@@ -0,0 +1,268 @@
+package asset
+
+import (
+	"context"
+	"fmt"
+	"log/slog"
+	"time"
+
+	"code.humancabbage.net/sam/moonmath/coindesk"
+	"code.humancabbage.net/sam/moonmath/config"
+	"code.humancabbage.net/sam/moonmath/moon"
+	"github.com/charmbracelet/bubbles/spinner"
+	"github.com/charmbracelet/bubbles/table"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+)
+
+type Model struct {
+	math moon.Math
+
+	refreshing bool
+	indicator  spinner.Model
+
+	properties  table.Model
+	projections table.Model
+}
+
+type Msg struct {
+	Asset coindesk.Asset
+	inner tea.Msg
+}
+
+func New(cfg config.Asset) (m Model) {
+	m.math = moon.NewMath(
+		cfg.Asset,
+		cfg.Goals,
+		config.GetBases(&cfg),
+	)
+
+	tableStyle := table.DefaultStyles()
+	tableStyle.Selected = tableStyle.Cell.Copy().
+		Padding(0)
+	tableStyle.Header = tableStyle.Header.
+		Bold(true).
+		Foreground(lipgloss.Color("214")).
+		Border(baseStyle.GetBorderStyle(), false, false, true, false)
+
+	// properties table
+
+	m.properties = table.New(
+		table.WithColumns([]table.Column{
+			{Title: "Property", Width: 9},
+			{Title: "Value", Width: 9},
+		}),
+		table.WithHeight(2),
+		table.WithStyles(tableStyle),
+	)
+
+	// projections table
+
+	labelsWidth := 0
+	for _, l := range m.math.Labels {
+		if len(l) > labelsWidth {
+			labelsWidth = len(l)
+		}
+	}
+	projectionCols := []table.Column{
+		{Title: "Labels", Width: labelsWidth},
+	}
+	for _, c := range m.math.Columns {
+		projectionCols = append(projectionCols,
+			table.Column{
+				Title: c.Base.Label(),
+				Width: 10,
+			})
+	}
+	m.projections = table.New(
+		table.WithColumns(projectionCols),
+		table.WithHeight(len(m.math.Labels)),
+		table.WithStyles(tableStyle),
+	)
+
+	// indicator spinner
+
+	m.indicator = spinner.New()
+	m.indicator.Spinner = spinner.Points
+	m.indicator.Style = indicatorNormalStyle
+
+	return
+}
+
+func (m Model) Init() tea.Cmd {
+	return tea.Batch(
+		m.indicator.Tick,
+		func() tea.Msg {
+			return Msg{m.math.Asset, refresh{}}
+		},
+	)
+}
+
+func (m Model) Handles(a coindesk.Asset) bool {
+	return m.math.Asset == a
+}
+
+func (m Model) Update(msg tea.Msg) (Model, tea.Cmd) {
+	switch msg := msg.(type) {
+	case Msg:
+		switch msg := msg.inner.(type) {
+		case refresh:
+			m.refreshing = true
+			m.indicator.Style = indicatorNormalStyle
+			return m, tea.Batch(
+				m.resumeIndicator,
+				m.refresh,
+				m.scheduleRefresh(),
+			)
+		case update:
+			var cmd tea.Cmd
+			if msg.err == nil {
+				m.math = msg.math
+				refillProperties(&m)
+				refillProjections(&m)
+				cmd = m.stopIndicator()
+			} else {
+				m.indicator.Style = indicatorErrorStyle
+			}
+			return m, cmd
+		case stopIndicator:
+			m.refreshing = false
+			return m, nil
+		}
+	case spinner.TickMsg:
+		if !m.refreshing {
+			return m, nil
+		}
+		var cmd tea.Cmd
+		m.indicator, cmd = m.indicator.Update(msg)
+		return m, cmd
+	}
+	return m, nil
+}
+
+type refresh struct{}
+type update struct {
+	math moon.Math
+	err  error
+}
+type stopIndicator struct{}
+
+func (m Model) refresh() tea.Msg {
+	ctx, cancel := context.WithTimeout(
+		context.Background(),
+		refreshTimeout)
+	defer cancel()
+	err := m.math.Refresh(ctx)
+	if err != nil {
+		slog.Error("refresh",
+			"asset", m.math.Asset,
+			"err", err,
+		)
+	}
+	return Msg{m.math.Asset, update{m.math, err}}
+}
+
+func (m Model) resumeIndicator() tea.Msg {
+	return m.indicator.Tick()
+}
+
+func (m Model) scheduleRefresh() tea.Cmd {
+	return tea.Tick(refreshInterval,
+		func(t time.Time) tea.Msg {
+			return Msg{m.math.Asset, refresh{}}
+		})
+}
+
+func (m Model) stopIndicator() tea.Cmd {
+	// wait a bit to stop the indicator, so that it's more obvious
+	// even when the refresh completes quickly.
+	return tea.Tick(stopIndicatorDelay,
+		func(t time.Time) tea.Msg {
+			return Msg{m.math.Asset, stopIndicator{}}
+		})
+}
+
+var refreshInterval = time.Second * 30
+var refreshTimeout = time.Second * 15
+var stopIndicatorDelay = time.Millisecond * 500
+
+func refillProperties(m *Model) {
+	rows := []table.Row{
+		{"Asset", string(m.math.Asset)},
+		{"Price", fmt.Sprintf("$%0.2f", m.math.CurrentPrice)},
+	}
+	m.properties.SetRows(rows)
+}
+
+func refillProjections(m *Model) {
+	cols := []table.Row{m.math.Labels}
+	for i := range m.math.Columns {
+		entries := renderEntries(m.math.Columns[i])
+		cols = append(cols, entries)
+	}
+	rows := transpose(cols)
+	m.projections.SetRows(rows)
+}
+
+func renderEntries(c moon.Column) (entries []string) {
+	entries = append(entries, fmt.Sprintf("$%.2f", c.StartingPrice))
+	entries = append(entries, fmt.Sprintf("%.4f%%", (c.CDPR-1)*100))
+	never := c.CDPR <= 1
+	for i := range c.Projections.Dates {
+		var cell string
+		if never {
+			cell = "NEVER!!!!!"
+		} else {
+			cell = c.
+				Projections.
+				Dates[i].
+				Format("2006-01-02")
+		}
+		entries = append(entries, cell)
+	}
+	return
+}
+
+func transpose(slice []table.Row) []table.Row {
+	xl := len(slice[0])
+	yl := len(slice)
+	result := make([]table.Row, xl)
+	for i := range result {
+		result[i] = make(table.Row, yl)
+	}
+	for i := 0; i < xl; i++ {
+		for j := 0; j < yl; j++ {
+			result[i][j] = slice[j][i]
+		}
+	}
+	return result
+}
+
+func (m Model) View() string {
+	var s string
+	indicator := ""
+	if m.refreshing {
+		indicator = m.indicator.View()
+	}
+	right := lipgloss.JoinVertical(
+		lipgloss.Center,
+		baseStyle.Render(m.properties.View()),
+		indicator,
+	)
+	s += lipgloss.JoinHorizontal(
+		lipgloss.Center,
+		right,
+		baseStyle.Render(m.projections.View()),
+	)
+	return s + "\n"
+}
+
+var baseStyle = lipgloss.NewStyle().
+	BorderStyle(lipgloss.RoundedBorder()).
+	BorderForeground(lipgloss.Color("240"))
+
+var indicatorNormalStyle = lipgloss.NewStyle().
+	Foreground(lipgloss.Color("69"))
+
+var indicatorErrorStyle = lipgloss.NewStyle().
+	Foreground(lipgloss.Color("160"))

tui/perf/perf.go

@@ -0,0 +1,42 @@
+package perf
+
+import (
+	"fmt"
+	"sync/atomic"
+
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+type Model struct {
+	updates *atomic.Int64
+	views   *atomic.Int64
+}
+
+func New() (m Model) {
+	m.updates = new(atomic.Int64)
+	m.views = new(atomic.Int64)
+	return
+}
+
+func (m Model) Init() tea.Cmd {
+	return nil
+}
+
+func (m Model) Update(_ tea.Msg) (Model, tea.Cmd) {
+	return m, nil
+}
+
+func (m Model) View() string {
+	updates := m.updates.Load()
+	views := m.views.Load()
+	s := fmt.Sprintf("updates: %d\tviews: %d", updates, views)
+	return s
+}
+
+func (m Model) AddUpdate() {
+	m.updates.Add(1)
+}
+
+func (m Model) AddView() {
+	m.views.Add(1)
+}

tui/tui.go

@@ -0,0 +1,99 @@
+package tui
+
+import (
+	"fmt"
+
+	"code.humancabbage.net/sam/moonmath/coindesk"
+	"code.humancabbage.net/sam/moonmath/config"
+	"code.humancabbage.net/sam/moonmath/tui/asset"
+	"code.humancabbage.net/sam/moonmath/tui/perf"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+)
+
+type Model struct {
+	assets       []asset.Model
+	stats        perf.Model
+	displayStats bool
+}
+
+func New(assets []coindesk.Asset, cfg config.Root, displayStats bool) (m Model) {
+	m.stats = perf.New()
+	m.displayStats = displayStats
+	// construct models for each asset, but remove dupes
+	seen := map[coindesk.Asset]struct{}{}
+	for _, a := range assets {
+		if _, ok := seen[a]; ok {
+			continue
+		}
+		assetCfg := cfg.ForAsset(a)
+		assetModel := asset.New(assetCfg)
+		m.assets = append(m.assets, assetModel)
+		seen[a] = struct{}{}
+	}
+	return
+}
+
+func (m Model) Init() tea.Cmd {
+	// initialize child models, collecting their commands,
+	// then return them all in a batch
+	var inits []tea.Cmd
+	for i := range m.assets {
+		cmd := m.assets[i].Init()
+		inits = append(inits, cmd)
+	}
+	return tea.Batch(inits...)
+}
+
+func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	m.stats.AddUpdate()
+	switch msg := msg.(type) {
+	// handle keys for quitting
+	case tea.KeyMsg:
+		switch msg.String() {
+		case "ctrl+c", "q", "esc":
+			return m, tea.Quit
+		}
+	// forward asset messages to the appropriate model
+	case asset.Msg:
+		cmd := m.forward(msg.Asset, msg)
+		return m, cmd
+	// forward any other message to each child model.
+	// typically, this is for animation.
+	default:
+		var commands []tea.Cmd
+		for i := range m.assets {
+			var cmd tea.Cmd
+			m.assets[i], cmd = m.assets[i].Update(msg)
+			commands = append(commands, cmd)
+		}
+		return m, tea.Batch(commands...)
+	}
+	return m, nil
+}
+
+func (m Model) View() string {
+	m.stats.AddView()
+	var ss []string
+	for i := range m.assets {
+		s := m.assets[i].View()
+		ss = append(ss, s)
+	}
+	if m.displayStats {
+		ss = append(ss, m.stats.View())
+	}
+	r := lipgloss.JoinVertical(lipgloss.Center, ss...)
+	return r
+}
+
+func (m Model) forward(a coindesk.Asset, msg tea.Msg) (cmd tea.Cmd) {
+	// O(n) is fine when n is small
+	for i := range m.assets {
+		if !m.assets[i].Handles(a) {
+			continue
+		}
+		m.assets[i], cmd = m.assets[i].Update(msg)
+		return
+	}
+	panic(fmt.Errorf("rogue message: %v", msg))
+}