#!/usr/bin/env bun
// Measures the home logo row's logos and the tool wordmarks with logo-soup (https://github.com/johannschopplich/logo-soup)
// and writes their metrics to src/component/site/logo-metrics.ts, where LogoWall sizes them.
// logo-soup and sharp install into a temporary folder, so the app takes no dependency on them.
// Run from packages/console/app: bun script/measure-logos.ts
import { mkdtemp, rm } from "fs/promises"
import { tmpdir } from "os"
import { dirname, join } from "path"
import { fileURLToPath } from "url"

const root = join(dirname(fileURLToPath(import.meta.url)), "..")
const tmp = await mkdtemp(join(tmpdir(), "logo-soup-"))
await Bun.$`bun add logo-soup@0.2.3`.cwd(tmp).quiet()
const soup: {
  analyzeDirectory: (
    dir: string,
    options: { extensions: string[] },
  ) => Promise<Map<string, { contentRatio: number; pixelDensity: number; visualCenterY: number }>>
} = await import(join(tmp, "node_modules/logo-soup/dist/index.mjs"))
const round = (value: number) => Math.round(value * 1000) / 1000
const folders = await Promise.all(
  [
    ["companies", "companies"],
    ["providers", "providers"],
    ["toolWordmarks", "tools/wordmarks"],
  ].map(async ([key, folder]) => {
    const metrics = await soup.analyzeDirectory(join(root, "public/logos", folder), { extensions: ["svg"] })
    return [
      `  ${key}: {`,
      ...[...metrics]
        .toSorted(([a], [b]) => a.localeCompare(b))
        .map(
          ([file, item]) =>
            `    "${file.replace(/\.svg$/, "")}": { aspect: ${round(item.contentRatio)}, density: ${round(item.pixelDensity)}, centerY: ${round(item.visualCenterY)} },`,
        ),
      "  },",
    ]
  }),
)
await rm(tmp, { recursive: true, force: true })
await Bun.write(
  join(root, "src/component/site/logo-metrics.ts"),
  [
    "// Generated by script/measure-logos.ts with logo-soup. Do not edit; rerun the script after changing",
    "// public/logos/companies, public/logos/providers or public/logos/tools/wordmarks. aspect is the ink's width / height (each SVG's",
    "// viewBox is cropped to its ink), density the share of that box that is ink, and centerY the visual",
    "// centre's offset from the box centre in fractions of the height.",
    "export const logoMetrics: Record<string, Record<string, { aspect: number; density: number; centerY: number }>> = {",
    ...folders.flat(),
    "}",
    "",
  ].join("\n"),
)
await Bun.$`bunx prettier --write src/component/site/logo-metrics.ts`.cwd(root).quiet()
console.log(`Wrote ${folders.flat().length} lines to src/component/site/logo-metrics.ts`)