🌈️ apply a wallpaper based on the weather outside
fix: imports, use npm
Angel Wang
(Jun 20, 2026, 10:49 PM -0600)
5c910d0c
6813f413
+174
-143
-84
analyze/analysis.mts
-84
analyze/analysis.mts
···
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#!/usr/bin/env zx
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/// <reference types="zx/globals" />
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export interface AnalysisConfig {
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imageDir: string
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preAnalysisCommands: string[]
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}
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export interface ImageAnalysisData {
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files: { path: string; oklch: number[] }[]
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}
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export const defaultConfig: AnalysisConfig = {
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imageDir: `${os.homedir()}/Pictures`,
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preAnalysisCommands: [],
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}
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export async function runPreAnalysis(hooks: string[]) {
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for await (const hook of hooks) {
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await $`eval ${hook}` // Scary!
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}
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}
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export async function analyzeImages(imageDir: string, analysisOutput: ImageAnalysisData, outputPath: string) {
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const images = await fs.promises.opendir(`${imageDir}`)
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for await (const image of images) {
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const path = `${imageDir}/${image.name}`
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const stat = await fs.promises.stat(path)
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if (stat.isFile()) {
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let output = await $`magick ${path} -colorspace Oklch -kmeans 10 -format "%c" histogram:info:`.then(
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(s) =>
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s.stdout
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.split("\n")
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.map((substr) => substr.trim())
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.filter((n) => n),
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) as string[]
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if (output.length < 5) {
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// do it again but with more violence
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console.log(
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`-kmeans 10 of ${image.name} didn't give enough colours, trying again with a higher value...`,
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)
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output = await $`magick ${path} -colorspace Oklch -kmeans 40 -format "%c" histogram:info:`.then(
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(s) =>
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s.stdout
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.split("\n") // split the output by newlines
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.map((substr) => substr.trim()) // trim the whitespace on each line
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.filter((n) => n), // and then filter out any blank elements generated
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)
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}
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const colours = output.map((entry) => {
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const arr = entry.split(" ")
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arr.pop()
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// [# of pixels, oklab colour, hex code]
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return {
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pixels: parseInt(arr[0]),
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oklab: arr[1].replace(/[()]/g, "").split(","), // (0,0,0) -> Array [0, 0, 0]
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hex: arr[2],
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}
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})
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colours.sort((a, b) => (b.pixels) - (a.pixels))
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const dominantColour = colours[0].oklab
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console.log(
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`Got oklch(${dominantColour}) as dominant colour of ${image.name}!`,
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)
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const lightness = Number(dominantColour[0]) * 100
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const chroma = Number(dominantColour[1]) * 100
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const hue = Number(dominantColour[2])
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analysisOutput.files.push({ path: path, oklch: [hue, chroma, lightness] })
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// flush every time we finish analyzing a file, because it just takes so long
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fs.writeFile(outputPath, JSON.stringify(analysisOutput, null, 4), (err: Error) => {
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if (err) throw new Error(err.message)
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})
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}
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}
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}
+83
analyze/analysis.ts
+83
analyze/analysis.ts
···
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#!/usr/bin/env zx
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import "zx/globals"
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export interface AnalysisConfig {
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imageDir: string
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preAnalysisCommands: string[]
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}
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export interface ImageAnalysisData {
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files: { path: string; oklch: number[] }[]
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}
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export const defaultConfig: AnalysisConfig = {
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imageDir: `${os.homedir()}/Pictures`,
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preAnalysisCommands: [],
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}
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+
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export async function runPreAnalysis(hooks: string[]) {
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for await (const hook of hooks) {
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await $`eval ${hook}` // Scary!
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}
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}
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+
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export async function analyzeImages(imageDir: string, analysisOutput: ImageAnalysisData, outputPath: string) {
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const images = await fs.promises.opendir(`${imageDir}`)
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for await (const image of images) {
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const path = `${imageDir}/${image.name}`
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const stat = await fs.promises.stat(path)
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if (stat.isFile()) {
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let output = await $`magick ${path} -colorspace Oklch -kmeans 10 -format "%c" histogram:info:`.then(
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(s) =>
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s.stdout
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.split("\n")
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.map((substr) => substr.trim())
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.filter((n) => n),
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) as string[]
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+
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if (output.length < 5) {
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// do it again but with more violence
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console.log(
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`-kmeans 10 of ${image.name} didn't give enough colours, trying again with a higher value...`,
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)
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output = await $`magick ${path} -colorspace Oklch -kmeans 40 -format "%c" histogram:info:`.then(
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(s) =>
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s.stdout
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.split("\n") // split the output by newlines
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.map((substr) => substr.trim()) // trim the whitespace on each line
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.filter((n) => n), // and then filter out any blank elements generated
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)
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}
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+
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const colours = output.map((entry) => {
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const arr = entry.split(" ")
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arr.pop()
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// [# of pixels, oklab colour, hex code]
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return {
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pixels: parseInt(arr[0]),
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oklab: arr[1].replace(/[()]/g, "").split(","), // (0,0,0) -> Array [0, 0, 0]
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hex: arr[2],
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}
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})
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colours.sort((a, b) => (b.pixels) - (a.pixels))
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const dominantColour = colours[0].oklab
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console.log(
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`Got oklch(${dominantColour}) as dominant colour of ${image.name}!`,
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)
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const lightness = Number(dominantColour[0]) * 100
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const chroma = Number(dominantColour[1]) * 100
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const hue = Number(dominantColour[2])
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analysisOutput.files.push({ path: path, oklch: [hue, chroma, lightness] })
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// flush every time we finish analyzing a file, because it just takes so long
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fs.writeFile(outputPath, JSON.stringify(analysisOutput, null, 4), (err: Error) => {
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if (err) throw new Error(err.message)
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})
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}
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}
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}
-31
analyze/index.mts
-31
analyze/index.mts
···
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#!/usr/bin/env zx
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/// <reference types="zx/globals" />
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import { cacheDir, configDir, loadConfig } from "../utils.mts"
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import { AnalysisConfig, analyzeImages, defaultConfig, ImageAnalysisData, runPreAnalysis } from "./analysis.mts"
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const pathToConfig = `${configDir}/analyze-config.json`
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console.debug(`Trying to load config from ${pathToConfig}...`)
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const config = await loadConfig(pathToConfig, defaultConfig) as AnalysisConfig
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if (config == undefined) {
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throw new Error("Couldn't initialize config!")
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}
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console.debug(`Config: \n${JSON.stringify(config, null, 4)}`)
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await fs.cp(`${cacheDir}/analysis.json`, `${cacheDir}/analysis.json.prev`, { force: true }, (err: Error) => {
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if (err) {
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console.log(err)
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}
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})
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const imageData = { files: [] } as ImageAnalysisData
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await runPreAnalysis(config.preAnalysisCommands)
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await analyzeImages(config.imageDir, imageData, `${cacheDir}/analysis.json`)
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await fs.rm(`${cacheDir}/analysis.json.prev`, { force: true })
+31
analyze/index.ts
+31
analyze/index.ts
···
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#!/usr/bin/env zx
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import { cacheDir, configDir, loadConfig } from "../utils.ts"
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import { AnalysisConfig, analyzeImages, defaultConfig, ImageAnalysisData, runPreAnalysis } from "./analysis.ts"
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import "zx/globals"
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const pathToConfig = `${configDir}/analyze-config.json`
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console.debug(`Trying to load config from ${pathToConfig}...`)
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const config = await loadConfig(pathToConfig, defaultConfig) as AnalysisConfig
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if (config == undefined) {
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throw new Error("Couldn't initialize config!")
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}
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console.debug(`Config: \n${JSON.stringify(config, null, 4)}`)
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await fs.cp(`${cacheDir}/analysis.json`, `${cacheDir}/analysis.json.prev`, { force: true }, (err: Error) => {
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if (err) {
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console.log(err)
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}
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})
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const imageData = { files: [] } as ImageAnalysisData
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await runPreAnalysis(config.preAnalysisCommands)
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await analyzeImages(config.imageDir, imageData, `${cacheDir}/analysis.json`)
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await fs.rm(`${cacheDir}/analysis.json.prev`, { force: true })
+1
-5
apply/application.mts
apply/application.ts
+1
-5
apply/application.mts
apply/application.ts
+5
-5
apply/index.mts
apply/index.ts
+5
-5
apply/index.mts
apply/index.ts
···
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#!/usr/bin/env zx
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/// <reference types="zx/globals" />
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import { ImageAnalysisData } from "../analyze/analysis.mts"
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import { cacheDir, configDir, loadConfig, map, mapEaseInExpo, mapEaseOutExpo } from "../utils.mts"
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import { ApplicationConfig, defaultConfig, findMatchingImages, getOpenMeteoData } from "./application.mts"
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import * as SunCalc from "npm:suncalc"
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import { ImageAnalysisData } from "../analyze/analysis.ts"
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import { cacheDir, configDir, loadConfig, map, mapEaseInExpo, mapEaseOutExpo } from "../utils.ts"
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import { ApplicationConfig, defaultConfig, findMatchingImages, getOpenMeteoData } from "./application.ts"
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import * as SunCalc from "suncalc"
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import "zx/globals"
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const pathToConfig = `${configDir}/apply-config.json`
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const pathToCache = `${cacheDir}/analysis.json`
+3
-5
deno.json
+3
-5
deno.json
···
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{
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"tasks": {
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"analyze": "zx analyze/index.mts",
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"apply": "zx apply/index.mts"
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"analyze": "zx analyze/index.ts",
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"apply": "zx apply/index.ts"
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},
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"imports": {
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"@std/assert": "jsr:@std/assert@1",
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"suncalc": "npm:suncalc@^2.0.0",
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"zx": "npm:zx@^8.8.5"
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"@std/assert": "jsr:@std/assert@1"
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},
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"fmt": { "semiColons": false, "indentWidth": 4, "useTabs": true, "lineWidth": 120 }
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}
+11
-13
deno.lock
+11
-13
deno.lock
···
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"version": "5",
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"specifiers": {
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"jsr:@std/assert@1": "1.0.19",
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"jsr:@std/internal@^1.0.12": "1.0.12",
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"npm:suncalc@2": "2.0.0",
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"npm:zx@^8.8.5": "8.8.5"
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"jsr:@std/internal@^1.0.12": "1.0.14",
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"npm:suncalc@2": "2.0.0"
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},
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"jsr": {
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"@std/assert@1.0.19": {
···
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"jsr:@std/internal"
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]
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},
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"@std/internal@1.0.12": {
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"integrity": "972a634fd5bc34b242024402972cd5143eac68d8dffaca5eaa4dba30ce17b027"
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+
"@std/internal@1.0.14": {
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"integrity": "291516b3d4c35024d6ffbc0a9df5bf4c64116e05b50012cf846710152d2ffdf7"
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}
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},
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"npm": {
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"suncalc@2.0.0": {
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"integrity": "sha512-RcO28GOMXNnB+sr+c7/+zv5UPMa9wxIsUVGE3HddjQykqCVEC2rc4t4IjBB7qaa7K7dx5Cxp8UZwexyXrX8JkA=="
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},
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"zx@8.8.5": {
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"integrity": "sha512-SNgDF5L0gfN7FwVOdEFguY3orU5AkfFZm9B5YSHog/UDHv+lvmd82ZAsOenOkQixigwH2+yyH198AwNdKhj+RA==",
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"bin": true
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}
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},
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"workspace": {
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"dependencies": [
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"jsr:@std/assert@1",
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"npm:suncalc@2",
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"npm:zx@^8.8.5"
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]
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"jsr:@std/assert@1"
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],
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"packageJson": {
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"dependencies": [
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"npm:suncalc@2"
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]
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}
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}
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}
+30
package-lock.json
+30
package-lock.json
···
1
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{
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"name": "rainwall",
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"lockfileVersion": 3,
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"requires": true,
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"packages": {
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"": {
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"dependencies": {
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"suncalc": "^2.0.0",
9
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"zx": "^8.8.5"
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}
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},
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+
"node_modules/suncalc": {
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"version": "2.0.0",
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"resolved": "https://registry.npmjs.org/suncalc/-/suncalc-2.0.0.tgz",
15
+
"integrity": "sha512-RcO28GOMXNnB+sr+c7/+zv5UPMa9wxIsUVGE3HddjQykqCVEC2rc4t4IjBB7qaa7K7dx5Cxp8UZwexyXrX8JkA=="
16
+
},
17
+
"node_modules/zx": {
18
+
"version": "8.8.5",
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+
"resolved": "https://registry.npmjs.org/zx/-/zx-8.8.5.tgz",
20
+
"integrity": "sha512-SNgDF5L0gfN7FwVOdEFguY3orU5AkfFZm9B5YSHog/UDHv+lvmd82ZAsOenOkQixigwH2+yyH198AwNdKhj+RA==",
21
+
"license": "Apache-2.0",
22
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"bin": {
23
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"zx": "build/cli.js"
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},
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"engines": {
26
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"node": ">= 12.17.0"
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}
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}
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}
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}
+6
package.json
+6
package.json