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

@@ -1,20 +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",
-            "type": "go",
-            "request": "launch",
-            "mode": "debug",
-            "console": "integratedTerminal",
-            "program": "${workspaceFolder}/moonmath.go",
-            "args": [
-                "--config-file",
-                "moonmath.toml"
-            ]
-        }
-    ]
-}

.vscode/settings.json

@@ -1,18 +0,0 @@
-{
-    "cSpell.words": [
-        "alecthomas",
-        "bitcoinity",
-        "Bitfinex",
-        "Bitstamp",
-        "bubbletea",
-        "CDPR",
-        "charmbracelet",
-        "Coindesk",
-        "knadh",
-        "koanf",
-        "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)
 
@@ -12,13 +12,27 @@ 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
+By default, the program will use Bitcoin along with various goals and bases of
-of comparison. With the `--config-file` flag, however, one can specify a TOML
+comparison. With the `--asset` flag, another asset supported by Coindesk can be
-file that overrides these defaults.
+chosen. These can even be chained, e.g. `--asset BTC --asset ETH`, to show
+projections for multiple assets simultaneously.
 
-See [this one for Ethereum](./config/eth.toml) for an example.
+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"
 

bitcoinity/model_test.go

@@ -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/assets.go

@@ -1,5 +1,6 @@
 package coindesk
 
+//goland:noinspection ALL
 const (
 	BTC      Asset = "BTC"
 	ETH      Asset = "ETH"

config/config.go

@@ -1,60 +1,73 @@
 package config
 
 import (
+	_ "embed"
 	"slices"
 	"time"
 
 	"code.humancabbage.net/sam/moonmath/coindesk"
 	"code.humancabbage.net/sam/moonmath/moon"
-	"github.com/knadh/koanf/parsers/toml"
+	"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(path string) (data Data, err error) {
+func Load(filePath string) (r Root, err error) {
 	err = k.Load(structs.Provider(Default, "koanf"), nil)
 	if err != nil {
 		return
 	}
-	if path != "" {
+	if filePath != "" {
-		err = k.Load(file.Provider(path), toml.Parser())
+		err = k.Load(file.Provider(filePath), yaml.Parser())
 		if err != nil {
 			return
 		}
 	}
-	err = k.Unmarshal("", &data)
+	err = k.Unmarshal("", &r)
-	if err != nil {
-		return
-	}
 
 	return
 }
 
-var Default = Data{
+var Default Root
-	Asset:         coindesk.BTC,
+
-	Goals:         moon.DefaultGoals,
+type Root struct {
-	ConstantBases: moon.DefaultConstantBases,
+	Defaults Asset                    `koanf:"defaults"`
-	RelativeBases: moon.DefaultRelativeBases,
+	Assets   map[coindesk.Asset]Asset `koanf:"assets"`
 }
 
-type Data struct {
+type Asset struct {
 	Asset         coindesk.Asset      `koanf:"asset"`
 	Goals         []moon.Goal         `koanf:"goals"`
 	ConstantBases []moon.ConstantBase `koanf:"constantBases"`
 	RelativeBases []moon.RelativeBase `koanf:"relativeBases"`
 }
 
-type Goal struct {
+func (r Root) ForAsset(a coindesk.Asset) (cfg Asset) {
-	Name  string  `koanf:"name"`
+	cfg = merge(r.Assets[a], r.Defaults)
-	Value float64 `koanf:"value"`
+	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 *Data) (bases []moon.Base) {
+func GetBases(d *Asset) (bases []moon.Base) {
 	for _, b := range d.ConstantBases {
 		bases = append(bases, b)
 	}
@@ -77,3 +90,18 @@ func GetBases(d *Data) (bases []moon.Base) {
 	})
 	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

config/eth.toml

@@ -1,25 +0,0 @@
-asset = "ETH"
-
-[[goals]]
-name = "$5k"
-value = 5000
-
-[[goals]]
-name = "$7.5k"
-value = 7500
-
-[[goals]]
-name = "$10k"
-value = 10000
-
-[[goals]]
-name = "$15k"
-value = 15000
-
-[[goals]]
-name = "$20k"
-value = 15000
-
-[[goals]]
-name = "$25k"
-value = 25000

go.mod

@@ -3,26 +3,28 @@ 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
 )
 
 require (
-	github.com/alecthomas/kong v0.9.0 // indirect
 	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/knadh/koanf/parsers/toml v0.1.0 // indirect
+	github.com/kr/text v0.2.0 // indirect
-	github.com/knadh/koanf/providers/file v0.1.0 // indirect
-	github.com/knadh/koanf/providers/structs v0.1.0 // indirect
-	github.com/knadh/koanf/v2 v2.1.0 // 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
@@ -33,12 +35,11 @@ require (
 	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/pelletier/go-toml v1.9.5 // 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

@@ -1,5 +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=
@@ -12,7 +16,7 @@ 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=
@@ -21,16 +25,24 @@ github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nos
 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/toml v0.1.0 h1:S2hLqS4TgWZYj4/7mI5m1CQQcWurxUz6ODgOub/6LCI=
+github.com/knadh/koanf/parsers/yaml v0.1.0 h1:ZZ8/iGfRLvKSaMEECEBPM1HQslrZADk8fP1XFUxVI5w=
-github.com/knadh/koanf/parsers/toml v0.1.0/go.mod h1:yUprhq6eo3GbyVXFFMdbfZSo928ksS+uo0FFqNMnO18=
+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=
@@ -52,24 +64,20 @@ github.com/muesli/reflow v0.3.0 h1:IFsN6K9NfGtjeggFP+68I4chLZV2yIKsXJFNZ+eWh6s=
 github.com/muesli/reflow v0.3.0/go.mod h1:pbwTDkVPibjO2kyvBQRBxTWEEGDGq0FlB1BIKtnHY/8=
 github.com/muesli/termenv v0.15.2 h1:GohcuySI0QmI3wN8Ok9PtKGkgkFIk7y6Vpb5PvrY+Wo=
 github.com/muesli/termenv v0.15.2/go.mod h1:Epx+iuz8sNs7mNKhxzH4fWXGNpZwUaJKRS1noLXviQ8=
-github.com/pelletier/go-toml v1.9.5 h1:4yBQzkHv+7BHq2PQUZF3Mx0IYxG7LsP222s7Agd3ve8=
-github.com/pelletier/go-toml v1.9.5/go.mod h1:u1nR/EPcESfeI/szUZKdtJ0xRNbUoANCkoOuaOx1Y+c=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/rivo/uniseg v0.1.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 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=
@@ -82,5 +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

@@ -2,6 +2,7 @@ package moon
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"math"
 	"time"
@@ -75,30 +76,10 @@ func (m *Math) Refresh(ctx context.Context) (err error) {
 	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,
-				m.Asset, 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()
@@ -115,48 +96,49 @@ type Column struct {
 	Projections   Projection
 }
 
-func (c *Column) Column() (entries []string) {
+func (c *Column) project(ctx context.Context, m *Math, now time.Time) (err error) {
-	entries = append(entries, fmt.Sprintf("$%.2f", c.StartingPrice))
+	err = c.fillStartingPrice(ctx, m.Asset, now)
-	entries = append(entries, fmt.Sprintf("%.2f%%", (c.CDPR-1)*100))
+	if err != nil {
-	never := c.CDPR <= 1
+		return
-	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)
 	}
+
+	c.Gain = float64(m.CurrentPrice) / float64(c.StartingPrice)
+	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 DefaultGoals = []Goal{
+func (c *Column) fillStartingPrice(
-	{"$100k", 100000},
+	ctx context.Context, asset coindesk.Asset, now time.Time,
-	{"$150k", 150000},
+) error {
-	{"$200k", 200000},
+	// if base provides a hardcoded starting price, use it
-	{"$250k", 250000},
+	c.StartingDate = c.Base.From(now)
-	{"$300k", 300000},
+	c.StartingPrice = coindesk.Price(c.Base.GetStartingPrice())
-	{"$500k", 500000},
+	if c.StartingPrice != 0 {
-	{"$1m", 1000000},
+		return nil
+	}
+
+	// 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 DefaultConstantBases = []ConstantBase{
+var errEmptyPriceEntries = errors.New("price values response has no entries")
-	{"2020-", time.Unix(1577836800, 0)},
-	{"2019-", time.Unix(1546300800, 0)},
-	{"2018-", time.Unix(1514764800, 0)},
-	{"2017-", time.Unix(1483228800, 0)},
-}
-
-var DefaultRelativeBases = []RelativeBase{
-	{"Month", time.Duration(-30) * time.Hour * 24},
-	{"Quarter", time.Duration(-90) * time.Hour * 24},
-	{"Half-Year", time.Duration(-182) * time.Hour * 24},
-	{"Year", time.Duration(-365) * time.Hour * 24},
-}
 
 type Goal struct {
 	Name  string  `koanf:"name"`
@@ -167,12 +149,14 @@ type Goal struct {
 type Base interface {
 	From(now time.Time) time.Time
 	Label() string
+	GetStartingPrice() float64
 }
 
 // ConstantBase is a base that is a constant time, e.g. 2020-01-01.
 type ConstantBase struct {
-	Name string    `koanf:"name"`
+	Name          string    `koanf:"name"`
-	Time time.Time `koanf:"time"`
+	Time          time.Time `koanf:"time"`
+	StartingPrice float64   `koanf:"startingPrice"`
 }
 
 func (cb ConstantBase) From(_ time.Time) time.Time {
@@ -183,17 +167,25 @@ func (cb ConstantBase) Label() string {
 	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        `koanf:"name"`
 	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) Label() string {
 	return rb.Name
 }
+
+func (rb RelativeBase) GetStartingPrice() float64 {
+	return 0
+}

moon/moon_test.go

@@ -11,6 +11,14 @@ func TestCDPR(t *testing.T) {
 }
 
 func TestProjection(t *testing.T) {
-	p := moon.ProjectDates(time.Now(), 68900, 1.0055, moon.DefaultGoals)
+	p := moon.ProjectDates(time.Now(), 68900, 1.0055, []moon.Goal{
+		{"$100k", 100000},
+		{"$150k", 150000},
+		{"$200k", 200000},
+		{"$250k", 250000},
+		{"$300k", 300000},
+		{"$500k", 500000},
+		{"$1m", 1000000},
+	})
 	_ = p
 }

moonmath.go

@@ -2,8 +2,13 @@ package main
 
 import (
 	"fmt"
+	"io"
+	"log/slog"
 	"os"
+	"path/filepath"
+	"strings"
 
+	"code.humancabbage.net/sam/moonmath/coindesk"
 	"code.humancabbage.net/sam/moonmath/config"
 	"code.humancabbage.net/sam/moonmath/tui"
 	"github.com/alecthomas/kong"
@@ -11,24 +16,68 @@ import (
 )
 
 var CLI struct {
-	ConfigFile string `help:"Path to TOML configuration file."`
+	Asset      []string `short:"a" default:"BTC" help:"Asset(s) to project."`
+	ConfigFile string   `short:"c" help:"Path to YAML configuration file."`
+	Perf       bool     `help:"Display internal performance stats."`
 }
 
 func main() {
+	logFile := setupLogging()
+	defer func() {
+		_ = logFile.Close()
+	}()
 	ctx := kong.Parse(&CLI)
 	if ctx.Error != nil {
 		fail(ctx.Error)
 	}
-	cfg, err := config.Load(CLI.ConfigFile)
+	allCfg, err := config.Load(CLI.ConfigFile)
 	if err != nil {
 		fail(err)
 	}
-	p := tea.NewProgram(tui.New(cfg))
+	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 {
 		fail(err)
 	}
 }
 
+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

@@ -1,168 +1,99 @@
 package tui
 
 import (
-	"context"
 	"fmt"
-	"time"
 
+	"code.humancabbage.net/sam/moonmath/coindesk"
 	"code.humancabbage.net/sam/moonmath/config"
-	"code.humancabbage.net/sam/moonmath/moon"
+	"code.humancabbage.net/sam/moonmath/tui/asset"
-	"github.com/charmbracelet/bubbles/spinner"
+	"code.humancabbage.net/sam/moonmath/tui/perf"
-	"github.com/charmbracelet/bubbles/table"
 	tea "github.com/charmbracelet/bubbletea"
 	"github.com/charmbracelet/lipgloss"
 )
 
 type Model struct {
-	math moon.Math
+	assets       []asset.Model
-
+	stats        perf.Model
-	reloading bool
+	displayStats bool
-	indicator spinner.Model
-
-	prices      table.Model
-	projections table.Model
 }
 
-func New(cfg config.Data) Model {
+func New(assets []coindesk.Asset, cfg config.Root, displayStats bool) (m Model) {
-	math := moon.NewMath(
+	m.stats = perf.New()
-		cfg.Asset,
+	m.displayStats = displayStats
-		cfg.Goals,
+	// construct models for each asset, but remove dupes
-		config.GetBases(&cfg))
+	seen := map[coindesk.Asset]struct{}{}
-
+	for _, a := range assets {
-	tableStyle := table.DefaultStyles()
+		if _, ok := seen[a]; ok {
-	tableStyle.Selected = lipgloss.NewStyle()
+			continue
-	prices := table.New(
+		}
-		table.WithColumns([]table.Column{
+		assetCfg := cfg.ForAsset(a)
-			{Title: "Asset", Width: 6},
+		assetModel := asset.New(assetCfg)
-			{Title: "Price", Width: 9},
+		m.assets = append(m.assets, assetModel)
-		}),
+		seen[a] = struct{}{}
-		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.Label(),
-				Width: 10,
-			})
-	}
-	projections := table.New(
-		table.WithColumns(projectionCols),
-		table.WithHeight(len(math.Labels)),
-		table.WithStyles(tableStyle),
-	)
-
-	indicator := spinner.New()
-	indicator.Spinner = spinner.Points
-	indicator.Style = lipgloss.NewStyle().
-		Foreground(lipgloss.Color("69"))
-
-	return Model{
-		math:        math,
-		indicator:   indicator,
-		prices:      prices,
-		projections: projections,
 	}
+	return
 }
 
 func (m Model) Init() tea.Cmd {
-	return tea.Batch(
+	// initialize child models, collecting their commands,
-		m.indicator.Tick,
+	// then return them all in a batch
-		func() tea.Msg {
+	var inits []tea.Cmd
-			return refresh{}
+	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) {
-	case refresh:
+	// handle keys for quitting
-		m.reloading = true
-		return m, func() tea.Msg {
-			_ = m.math.Refresh(context.TODO())
-			return m.math
-		}
-	case moon.Math:
-		m.math = msg
-		m.reloading = false
-		refillPrice(&m)
-		refillProjections(&m)
-		return m, tea.Tick(time.Second*30,
-			func(t time.Time) tea.Msg {
-				return refresh{}
-			})
-	case spinner.TickMsg:
-		var cmd tea.Cmd
-		m.indicator, cmd = m.indicator.Update(msg)
-		return m, cmd
 	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
 }
 
-type refresh struct{}
-
-func refillPrice(m *Model) {
-	rows := []table.Row{
-		[]string{
-			string(m.math.Asset),
-			fmt.Sprintf("$%0.2f", m.math.CurrentPrice),
-		},
-	}
-	m.prices.SetRows(rows)
-}
-
-func refillProjections(m *Model) {
-	rows := []table.Row{m.math.Labels}
-	for i := range m.math.Columns {
-		rows = append(rows, m.math.Columns[i].Column())
-	}
-	rows = transpose(rows)
-	m.projections.SetRows(rows)
-}
-
-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
+	m.stats.AddView()
-	indicator := ""
+	var ss []string
-	if m.reloading {
+	for i := range m.assets {
-		indicator = m.indicator.View()
+		s := m.assets[i].View()
+		ss = append(ss, s)
 	}
-	right := lipgloss.JoinVertical(
+	if m.displayStats {
-		lipgloss.Center,
+		ss = append(ss, m.stats.View())
-		baseStyle.Render(m.prices.View()),
+	}
-		indicator,
+	r := lipgloss.JoinVertical(lipgloss.Center, ss...)
-	)
+	return r
-	s += lipgloss.JoinHorizontal(
-		lipgloss.Top,
-		right,
-		baseStyle.Render(m.projections.View()),
-	)
-	return s + "\n"
 }
 
-var baseStyle = lipgloss.NewStyle().
+func (m Model) forward(a coindesk.Asset, msg tea.Msg) (cmd tea.Cmd) {
-	BorderStyle(lipgloss.NormalBorder()).
+	// O(n) is fine when n is small
-	BorderForeground(lipgloss.Color("240"))
+	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))
+}