import type { z } from 'zod'
import type {
  Registry,
  RegistryEntry,
  registryItemTypeSchema,
} from '../registry/schema'
// @sts-nocheck
import { existsSync, promises as fs } from 'node:fs'
import { tmpdir } from 'node:os'
import path from 'node:path'
import { template } from 'lodash-es'
import { rimraf } from 'rimraf'

import { registry } from '../registry'
import { buildRegistry as crawlContent } from '../registry/crawl-content'
import { baseColors } from '../registry/registry-base-colors'
import { colorMapping, colors } from '../registry/registry-colors'
import { iconLibraries, icons } from '../registry/registry-icons'
import { styles } from '../registry/registry-styles'
import {
  registryEntrySchema,
  registrySchema,
} from '../registry/schema'
import { fixImport } from './fix-import'

const REGISTRY_PATH = path.join(process.cwd(), 'src/public/r')

const REGISTRY_INDEX_WHITELIST: z.infer<typeof registryItemTypeSchema>[] = [
  'registry:ui',
  'registry:lib',
  'registry:hook',
  'registry:theme',
  'registry:block',
  'registry:example',
]

// const project = new Project({
//   compilerOptions: {},
// })

async function createTempSourceFile(filename: string) {
  const dir = await fs.mkdtemp(path.join(tmpdir(), 'shadcn-'))
  return path.join(dir, filename)
}

// ----------------------------------------------------------------------------
// Build __registry__/index.ts.
// ----------------------------------------------------------------------------
async function buildRegistry(registry: Registry) {
  let index = `// @ts-nocheck
// This file is autogenerated by scripts/build-registry.ts
// Do not edit this file directly.

export const Index: Record<string, any> = {
`

  for (const style of styles) {
    index += `  "${style.name}": {`

    // Build style index.
    for (const item of registry) {
      const resolveFiles = item.files?.map(
        file =>
          `registry/${style.name}/${
            typeof file === 'string' ? file : file.path
          }`,
      )
      if (!resolveFiles) {
        continue
      }

      const type = item.type.split(':')[1]
      let sourceFilename = ''

      // const chunks: any = []
      if (item.type === 'registry:block') {
        const file = resolveFiles[0]
        const filename = path.basename(file)
        let raw: string
        try {
          raw = await fs.readFile(file, 'utf8')
        }
        catch (error) {
          continue
        }
        // const tempFile = await createTempSourceFile(filename)
        // const sourceFile = project.createSourceFile(tempFile, raw, {
        //   scriptKind: ScriptKind.TS,
        // })

        // const description = sourceFile
        //   .getVariableDeclaration('description')
        //   ?.getInitializerOrThrow()
        //   .asKindOrThrow(SyntaxKind.StringLiteral)
        //   .getLiteralValue()

        // item.description = description ?? ''

        // // Find all imports.
        // const imports = new Map<
        //   string,
        //   {
        //     module: string
        //     text: string
        //     isDefault?: boolean
        //   }
        // >()
        // sourceFile.getImportDeclarations().forEach((node) => {
        //   const module = node.getModuleSpecifier().getLiteralValue()
        //   node.getNamedImports().forEach((item) => {
        //     imports.set(item.getText(), {
        //       module,
        //       text: node.getText(),
        //     })
        //   })

        //   const defaultImport = node.getDefaultImport()
        //   if (defaultImport) {
        //     imports.set(defaultImport.getText(), {
        //       module,
        //       text: defaultImport.getText(),
        //       isDefault: true,
        //     })
        //   }
        // })

        // Find all opening tags with x-chunk attribute.
        // const components = sourceFile
        //   .getDescendantsOfKind(SyntaxKind.JsxOpeningElement)
        //   .filter((node) => {
        //     return node.getAttribute('x-chunk') !== undefined
        //   })

        // chunks = await Promise.all(
        //   components.map(async (component, index) => {
        //     const chunkName = `${item.name}-chunk-${index}`

        //     // Get the value of x-chunk attribute.
        //     const attr = component
        //       .getAttributeOrThrow('x-chunk')
        //       .asKindOrThrow(SyntaxKind.JsxAttribute)

        //     const description = attr
        //       .getInitializerOrThrow()
        //       .asKindOrThrow(SyntaxKind.StringLiteral)
        //       .getLiteralValue()

        //     // Delete the x-chunk attribute.
        //     attr.remove()

        //     // Add a new attribute to the component.
        //     component.addAttribute({
        //       name: 'x-chunk',
        //       initializer: `"${chunkName}"`,
        //     })

        //     // Get the value of x-chunk-container attribute.
        //     const containerAttr = component
        //       .getAttribute('x-chunk-container')
        //       ?.asKindOrThrow(SyntaxKind.JsxAttribute)

        //     const containerClassName = containerAttr
        //       ?.getInitializer()
        //       ?.asKindOrThrow(SyntaxKind.StringLiteral)
        //       .getLiteralValue()

        //     containerAttr?.remove()

        //     const parentJsxElement = component.getParentIfKindOrThrow(
        //       SyntaxKind.JsxElement,
        //     )

        //     // Find all opening tags on component.
        //     const children = parentJsxElement
        //       .getDescendantsOfKind(SyntaxKind.JsxOpeningElement)
        //       .map((node) => {
        //         return node.getTagNameNode().getText()
        //       })
        //       .concat(
        //         parentJsxElement
        //           .getDescendantsOfKind(SyntaxKind.JsxSelfClosingElement)
        //           .map((node) => {
        //             return node.getTagNameNode().getText()
        //           }),
        //       )

        //     const componentImports = new Map<
        //       string,
        //       string | string[] | Set<string>
        //     >()
        //     children.forEach((child) => {
        //       const importLine = imports.get(child)
        //       if (importLine) {
        //         const imports = componentImports.get(importLine.module) || []

        //         const newImports = importLine.isDefault
        //           ? importLine.text
        //           : new Set([...imports, child])

        //         componentImports.set(
        //           importLine.module,
        //           importLine?.isDefault ? newImports : Array.from(newImports),
        //         )
        //       }
        //     })

        //     const componnetImportLines = Array.from(
        //       componentImports.keys(),
        //     ).map((key) => {
        //       const values = componentImports.get(key)
        //       const specifier = Array.isArray(values)
        //         ? `{${values.join(',')}}`
        //         : values

        //       return `import ${specifier} from "${key}"`
        //     })

        //     const code = `
        //     'use client'

        //     ${componnetImportLines.join('\n')}

        //     export default function Component() {
        //       return (${parentJsxElement.getText()})
        //     }`

        //     const targetFile = file.replace(item.name, `${chunkName}`)
        //     const targetFilePath = path.join(
        //       cwd(),
        //       `registry/${style.name}/${type}/${chunkName}.ts`,
        //     )

        //     // Write component file.
        //     rimraf.sync(targetFilePath)
        //     await fs.writeFile(targetFilePath, code, 'utf8')

        //     return {
        //       name: chunkName,
        //       description,
        //       component: `React.lazy(() => import("@/registry/${style.name}/${type}/${chunkName}")),`,
        //       file: targetFile,
        //       container: {
        //         className: containerClassName,
        //       },
        //     }
        //   }),
        // )

        // // Write the source file for blocks only.
        sourceFilename = `__registry__/${style.name}/${type}/${item.name}.ts`

        if (item.files) {
          const files = item.files.map(file =>
            typeof file === 'string'
              ? { type: 'registry:page', path: file }
              : file,
          )
          if (files?.length) {
            sourceFilename = `__registry__/${style.name}/${files[0].path}`
          }
        }

        const sourcePath = path.join(process.cwd(), sourceFilename)
        if (!existsSync(sourcePath)) {
          await fs.mkdir(sourcePath, { recursive: true })
        }

        rimraf.sync(sourcePath)
        // await fs.writeFile(sourcePath, sourceFile.getText())
        await fs.writeFile(sourcePath, raw)
      }

      let componentPath = `@/registry/${style.name}/${type}/${item.name}`

      if (item.files) {
        const files = item.files.map(file =>
          typeof file === 'string'
            ? { type: 'registry:page', path: file }
            : file,
        )
        if (files?.length) {
          componentPath = `@/registry/${style.name}/${files[0].path}`
        }
      }

      index += `
    "${item.name}": {
      name: "${item.name}",
      description: "${item.description ?? ''}",
      type: "${item.type}",
      registryDependencies: ${JSON.stringify(item.registryDependencies)},
      files: [${item.files?.map((file) => {
        const filePath = `registry/${style.name}/${
          typeof file === 'string' ? file : file.path
        }`
        const resolvedFilePath = path.resolve(filePath)
        return typeof file === 'string'
          ? `"${resolvedFilePath}"`
          : `{
        path: "${filePath}",
        type: "${file.type}",
        target: "${file.target ?? ''}"
      }`
      })}],
      component: React.lazy(() => import("${componentPath}")),
      source: "${sourceFilename}",
      category: "${item.category ?? ''}",
      subcategory: "${item.subcategory ?? ''}"
    },`
    }

    //  TODO: maybe implement chunk?
    // chunks: [${chunks.map(
    //   chunk => `{
    //   name: "${chunk.name}",
    //   description: "${chunk.description ?? 'No description'}",
    //   component: ${chunk.component}
    //   file: "${chunk.file}",
    //   container: {
    //     className: "${chunk.container.className}"
    //   }
    // }`,
    // )}]

    index += `
  },`
  }

  index += `
}
`

  // ----------------------------------------------------------------------------
  // Build registry/index.json.
  // ----------------------------------------------------------------------------
  const items = registry
    .filter(item => ['registry:ui'].includes(item.type))
    .map((item) => {
      return {
        ...item,
        files: item.files?.map((_file) => {
          const file
            = typeof _file === 'string'
              ? {
                  path: _file,
                  type: item.type,
                }
              : _file

          return file
        }),
      }
    })
  const registryJson = JSON.stringify(items, null, 2)
  rimraf.sync(path.join(REGISTRY_PATH, 'index.json'))
  await fs.writeFile(
    path.join(REGISTRY_PATH, 'index.json'),
    registryJson,
    'utf8',
  )

  // Write style index.
  rimraf.sync(path.join(process.cwd(), '__registry__/index.ts'))
  await fs.writeFile(path.join(process.cwd(), '__registry__/index.ts'), index)
}

// ----------------------------------------------------------------------------
// Build registry/styles/[style]/[name].json.
// ----------------------------------------------------------------------------
async function buildStyles(registry: Registry) {
  for (const style of styles) {
    const targetPath = path.join(REGISTRY_PATH, 'styles', style.name)

    // Create directory if it doesn't exist.
    if (!existsSync(targetPath)) {
      await fs.mkdir(targetPath, { recursive: true })
    }

    for (const item of registry) {
      if (!REGISTRY_INDEX_WHITELIST.includes(item.type)) {
        continue
      }

      let files
      if (item.files) {
        files = await Promise.all(
          item.files.map(async (_file) => {
            const file
              = typeof _file === 'string'
                ? {
                    path: _file,
                    type: item.type,
                    content: '',
                    target: '',
                  }
                : _file

            let content: string
            try {
              content = await fs.readFile(
                path.join(process.cwd(), 'registry', style.name, file.path),
                'utf8',
              )

              // Only fix imports for v0- blocks.
              if (item.name.startsWith('v0-')) {
                content = fixImport(content)
              }
            }
            catch (error) {
              return
            }

            // TODO: remove meta content
            // const tempFile = await createTempSourceFile(file.path)
            // const sourceFile = project.createSourceFile(tempFile, content, {
            //   scriptKind: ScriptKind.TS,
            // })

            // sourceFile.getVariableDeclaration('iframeHeight')?.remove()
            // sourceFile.getVariableDeclaration('containerClassName')?.remove()
            // sourceFile.getVariableDeclaration('description')?.remove()

            let target = file.target || ''

            if ((!target || target === '') && item.name.startsWith('v0-')) {
              const fileName = file.path.split('/').pop()
              if (
                file.type === 'registry:block'
                || file.type === 'registry:component'
                || file.type === 'registry:example'
              ) {
                target = `components/${fileName}`
              }

              if (file.type === 'registry:ui') {
                target = `components/ui/${fileName}`
              }

              if (file.type === 'registry:hook') {
                target = `hooks/${fileName}`
              }

              if (file.type === 'registry:lib') {
                target = `lib/${fileName}`
              }
            }

            return {
              path: file.path,
              type: file.type,
              // content: sourceFile.getText(),
              content,
              target,
            }
          }),
        )
      }

      const payload = registryEntrySchema
        .omit({
          // source: true,
          category: true,
          subcategory: true,
          // chunks: true,
        })
        .safeParse({
          ...item,
          files,
        })

      if (payload.success) {
        await fs.writeFile(
          path.join(targetPath, `${item.name}.json`),
          JSON.stringify(payload.data, null, 2),
          'utf8',
        )
      }
    }
  }

  // ----------------------------------------------------------------------------
  // Build registry/styles/index.json.
  // ----------------------------------------------------------------------------
  const stylesJson = JSON.stringify(styles, null, 2)
  await fs.writeFile(
    path.join(REGISTRY_PATH, 'styles/index.json'),
    stylesJson,
    'utf8',
  )
}

// ----------------------------------------------------------------------------
// Build registry/styles/[name]/index.json.
// ----------------------------------------------------------------------------
async function buildStylesIndex() {
  for (const style of styles) {
    const targetPath = path.join(REGISTRY_PATH, 'styles', style.name)

    const dependencies = [
      'tailwindcss-animate',
      'class-variance-authority',
      'lucide-react',
    ]

    // TODO: Remove this when we migrate to lucide-react.
    // if (style.name === "new-york") {
    //   dependencies.push("@radix-ui/react-icons")
    // }

    const payload: RegistryEntry = {
      name: style.name,
      type: 'registry:style',
      dependencies,
      registryDependencies: ['utils'],
      tailwind: {
        config: {
          plugins: [`require("tailwindcss-animate")`],
        },
      },
      cssVars: {},
      files: [],
    }

    await fs.writeFile(
      path.join(targetPath, 'index.json'),
      JSON.stringify(payload, null, 2),
      'utf8',
    )
  }
}

// ----------------------------------------------------------------------------
// Build registry/colors/index.json.
// ----------------------------------------------------------------------------
async function buildThemes() {
  const colorsTargetPath = path.join(REGISTRY_PATH, 'colors')
  rimraf.sync(colorsTargetPath)
  if (!existsSync(colorsTargetPath)) {
    await fs.mkdir(colorsTargetPath, { recursive: true })
  }

  const colorsData: Record<string, any> = {}
  for (const [color, value] of Object.entries(colors)) {
    if (typeof value === 'string') {
      colorsData[color] = value
      continue
    }

    if (Array.isArray(value)) {
      colorsData[color] = value.map(item => ({
        ...item,
        rgbChannel: item.rgb.replace(/^rgb\((\d+),(\d+),(\d+)\)$/, '$1 $2 $3'),
        hslChannel: item.hsl.replace(
          /^hsl\(([\d.]+),([\d.]+%),([\d.]+%)\)$/,
          '$1 $2 $3',
        ),
      }))
      continue
    }

    if (typeof value === 'object') {
      colorsData[color] = {
        ...value,
        rgbChannel: value.rgb.replace(/^rgb\((\d+),(\d+),(\d+)\)$/, '$1 $2 $3'),
        hslChannel: value.hsl.replace(
          /^hsl\(([\d.]+),([\d.]+%),([\d.]+%)\)$/,
          '$1 $2 $3',
        ),
      }
      continue
    }
  }

  await fs.writeFile(
    path.join(colorsTargetPath, 'index.json'),
    JSON.stringify(colorsData, null, 2),
    'utf8',
  )

  // ----------------------------------------------------------------------------
  // Build registry/colors/[base].json.
  // ----------------------------------------------------------------------------
  const BASE_STYLES = `@tailwind base;
@tailwind components;
@tailwind utilities;
  `

  const BASE_STYLES_WITH_VARIABLES = `@tailwind base;
@tailwind components;
@tailwind utilities;

@layer base {
  :root {
    --background: <%- colors.light["background"] %>;
    --foreground: <%- colors.light["foreground"] %>;
    --card: <%- colors.light["card"] %>;
    --card-foreground: <%- colors.light["card-foreground"] %>;
    --popover: <%- colors.light["popover"] %>;
    --popover-foreground: <%- colors.light["popover-foreground"] %>;
    --primary: <%- colors.light["primary"] %>;
    --primary-foreground: <%- colors.light["primary-foreground"] %>;
    --secondary: <%- colors.light["secondary"] %>;
    --secondary-foreground: <%- colors.light["secondary-foreground"] %>;
    --muted: <%- colors.light["muted"] %>;
    --muted-foreground: <%- colors.light["muted-foreground"] %>;
    --accent: <%- colors.light["accent"] %>;
    --accent-foreground: <%- colors.light["accent-foreground"] %>;
    --destructive: <%- colors.light["destructive"] %>;
    --destructive-foreground: <%- colors.light["destructive-foreground"] %>;
    --border: <%- colors.light["border"] %>;
    --input: <%- colors.light["input"] %>;
    --ring: <%- colors.light["ring"] %>;
    --radius: 0.5rem;
    --chart-1: <%- colors.light["chart-1"] %>;
    --chart-2: <%- colors.light["chart-2"] %>;
    --chart-3: <%- colors.light["chart-3"] %>;
    --chart-4: <%- colors.light["chart-4"] %>;
    --chart-5: <%- colors.light["chart-5"] %>;
  }

  .dark {
    --background: <%- colors.dark["background"] %>;
    --foreground: <%- colors.dark["foreground"] %>;
    --card: <%- colors.dark["card"] %>;
    --card-foreground: <%- colors.dark["card-foreground"] %>;
    --popover: <%- colors.dark["popover"] %>;
    --popover-foreground: <%- colors.dark["popover-foreground"] %>;
    --primary: <%- colors.dark["primary"] %>;
    --primary-foreground: <%- colors.dark["primary-foreground"] %>;
    --secondary: <%- colors.dark["secondary"] %>;
    --secondary-foreground: <%- colors.dark["secondary-foreground"] %>;
    --muted: <%- colors.dark["muted"] %>;
    --muted-foreground: <%- colors.dark["muted-foreground"] %>;
    --accent: <%- colors.dark["accent"] %>;
    --accent-foreground: <%- colors.dark["accent-foreground"] %>;
    --destructive: <%- colors.dark["destructive"] %>;
    --destructive-foreground: <%- colors.dark["destructive-foreground"] %>;
    --border: <%- colors.dark["border"] %>;
    --input: <%- colors.dark["input"] %>;
    --ring: <%- colors.dark["ring"] %>;
    --chart-1: <%- colors.dark["chart-1"] %>;
    --chart-2: <%- colors.dark["chart-2"] %>;
    --chart-3: <%- colors.dark["chart-3"] %>;
    --chart-4: <%- colors.dark["chart-4"] %>;
    --chart-5: <%- colors.dark["chart-5"] %>;
  }
}

@layer base {
  * {
    @apply border-border;
  }
  body {
    @apply bg-background text-foreground;
  }
}`

  for (const baseColor of ['slate', 'gray', 'zinc', 'neutral', 'stone']) {
    const base: Record<string, any> = {
      inlineColors: {},
      cssVars: {},
    }
    for (const [mode, values] of Object.entries(colorMapping)) {
      base.inlineColors[mode] = {}
      base.cssVars[mode] = {}
      for (const [key, value] of Object.entries(values)) {
        if (typeof value === 'string') {
          // Chart colors do not have a 1-to-1 mapping with tailwind colors.
          if (key.startsWith('chart-')) {
            base.cssVars[mode][key] = value
            continue
          }

          const resolvedColor = value.replace(/\{\{base\}\}-/g, `${baseColor}-`)
          base.inlineColors[mode][key] = resolvedColor

          const [resolvedBase, scale] = resolvedColor.split('-')
          const color = scale
            ? colorsData[resolvedBase].find(
              (item: any) => item.scale === Number.parseInt(scale),
            )
            : colorsData[resolvedBase]
          if (color) {
            base.cssVars[mode][key] = color.hslChannel
          }
        }
      }
    }

    // Build css vars.
    base.inlineColorsTemplate = template(BASE_STYLES)({})
    base.cssVarsTemplate = template(BASE_STYLES_WITH_VARIABLES)({
      colors: base.cssVars,
    })

    await fs.writeFile(
      path.join(REGISTRY_PATH, `colors/${baseColor}.json`),
      JSON.stringify(base, null, 2),
      'utf8',
    )

    // ----------------------------------------------------------------------------
    // Build registry/themes.css
    // ----------------------------------------------------------------------------
    const THEME_STYLES_WITH_VARIABLES = `
.theme-<%- theme %> {
  --background: <%- colors.light["background"] %>;
  --foreground: <%- colors.light["foreground"] %>;

  --muted: <%- colors.light["muted"] %>;
  --muted-foreground: <%- colors.light["muted-foreground"] %>;

  --popover: <%- colors.light["popover"] %>;
  --popover-foreground: <%- colors.light["popover-foreground"] %>;

  --card: <%- colors.light["card"] %>;
  --card-foreground: <%- colors.light["card-foreground"] %>;

  --border: <%- colors.light["border"] %>;
  --input: <%- colors.light["input"] %>;

  --primary: <%- colors.light["primary"] %>;
  --primary-foreground: <%- colors.light["primary-foreground"] %>;

  --secondary: <%- colors.light["secondary"] %>;
  --secondary-foreground: <%- colors.light["secondary-foreground"] %>;

  --accent: <%- colors.light["accent"] %>;
  --accent-foreground: <%- colors.light["accent-foreground"] %>;

  --destructive: <%- colors.light["destructive"] %>;
  --destructive-foreground: <%- colors.light["destructive-foreground"] %>;

  --ring: <%- colors.light["ring"] %>;

  --radius: <%- colors.light["radius"] %>;
}

.dark .theme-<%- theme %> {
  --background: <%- colors.dark["background"] %>;
  --foreground: <%- colors.dark["foreground"] %>;

  --muted: <%- colors.dark["muted"] %>;
  --muted-foreground: <%- colors.dark["muted-foreground"] %>;

  --popover: <%- colors.dark["popover"] %>;
  --popover-foreground: <%- colors.dark["popover-foreground"] %>;

  --card: <%- colors.dark["card"] %>;
  --card-foreground: <%- colors.dark["card-foreground"] %>;

  --border: <%- colors.dark["border"] %>;
  --input: <%- colors.dark["input"] %>;

  --primary: <%- colors.dark["primary"] %>;
  --primary-foreground: <%- colors.dark["primary-foreground"] %>;

  --secondary: <%- colors.dark["secondary"] %>;
  --secondary-foreground: <%- colors.dark["secondary-foreground"] %>;

  --accent: <%- colors.dark["accent"] %>;
  --accent-foreground: <%- colors.dark["accent-foreground"] %>;

  --destructive: <%- colors.dark["destructive"] %>;
  --destructive-foreground: <%- colors.dark["destructive-foreground"] %>;

  --ring: <%- colors.dark["ring"] %>;
}`

    const themeCSS = []
    for (const theme of baseColors) {
      themeCSS.push(
        template(THEME_STYLES_WITH_VARIABLES)({
          colors: theme.cssVars,
          theme: theme.name,
        }),
      )
    }

    await fs.writeFile(
      path.join(REGISTRY_PATH, `themes.css`),
      themeCSS.join('\n'),
      'utf8',
    )

    // ----------------------------------------------------------------------------
    // Build registry/themes/[theme].json
    // ----------------------------------------------------------------------------
    rimraf.sync(path.join(REGISTRY_PATH, 'themes'))
    for (const baseColor of ['slate', 'gray', 'zinc', 'neutral', 'stone']) {
      const payload: Record<string, any> = {
        name: baseColor,
        label: baseColor.charAt(0).toUpperCase() + baseColor.slice(1),
        cssVars: {},
      }
      for (const [mode, values] of Object.entries(colorMapping)) {
        payload.cssVars[mode] = {}
        for (const [key, value] of Object.entries(values)) {
          if (typeof value === 'string') {
            const resolvedColor = value.replace(/\{\{base\}\}-/g, `${baseColor}-`)
            payload.cssVars[mode][key] = resolvedColor

            const [resolvedBase, scale] = resolvedColor.split('-')
            const color = scale
              ? colorsData[resolvedBase].find(
                (item: any) => item.scale === Number.parseInt(scale),
              )
              : colorsData[resolvedBase]
            if (color) {
              payload.cssVars[mode][key] = color.hslChannel
            }
          }
        }
      }

      const targetPath = path.join(REGISTRY_PATH, 'themes')

      // Create directory if it doesn't exist.
      if (!existsSync(targetPath)) {
        await fs.mkdir(targetPath, { recursive: true })
      }

      await fs.writeFile(
        path.join(targetPath, `${payload.name}.json`),
        JSON.stringify(payload, null, 2),
        'utf8',
      )
    }
  }
}

// ----------------------------------------------------------------------------
// Build registry/icons/index.json.
// ----------------------------------------------------------------------------
async function buildIcons() {
  const iconsTargetPath = path.join(REGISTRY_PATH, 'icons')
  rimraf.sync(iconsTargetPath)
  if (!existsSync(iconsTargetPath)) {
    await fs.mkdir(iconsTargetPath, { recursive: true })
  }

  const iconsData = icons

  await fs.writeFile(
    path.join(iconsTargetPath, 'index.json'),
    JSON.stringify(iconsData, null, 2),
    'utf8',
  )
}

// ----------------------------------------------------------------------------
// Build __registry__/icons.ts.
// ----------------------------------------------------------------------------
async function buildRegistryIcons() {
  let index = `// @ts-nocheck
// This file is autogenerated by scripts/build-registry.ts
// Do not edit this file directly.
import * as React from "react"

export const Icons = {
`

  for (const [icon, libraries] of Object.entries(icons)) {
    index += `  "${icon}": {`
    for (const [library, componentName] of Object.entries(libraries)) {
      const packageName = iconLibraries[library as keyof typeof iconLibraries].package
      if (packageName) {
        index += `
  ${library}: React.lazy(() => import("${packageName}").then(mod => ({
    default: mod.${componentName}
  }))),`
      }
    }
    index += `
},`
  }

  index += `
}
`

  // Write style index.
  rimraf.sync(path.join(process.cwd(), '__registry__/icons.ts'))
  await fs.writeFile(
    path.join(process.cwd(), '__registry__/icons.ts'),
    index,
    'utf8',
  )
}

try {
  const content = await crawlContent()
  const result = registrySchema.safeParse([...registry, ...content])

  if (!result.success) {
    console.error(result.error)
    process.exit(1)
  }

  await buildRegistry(result.data)
  await buildStyles(result.data)
  await buildStylesIndex()
  await buildThemes()

  await buildRegistryIcons()
  await buildIcons()

  // eslint-disable-next-line no-console
  console.log('✅ Done!')
}
catch (error) {
  console.error(error)
  process.exit(1)
}