import fg from 'fast-glob'
import fs from 'fs-extra'
import yaml from 'js-yaml'
import rimraf from 'rimraf'
import * as z from 'zod'

import { Database } from '../assets/schema'
import { builtPath, dstMediaPath, srcMediaPath, srcPostPath } from './dir'
import { MakeHTML } from './make-html'

async function main() {
  rimraf.sync(dstMediaPath())
  rimraf.sync(builtPath())

  await fs.copy(srcMediaPath(), dstMediaPath())
  await fs.ensureDir(builtPath())

  const db = new Database(builtPath('data.db'))
  db.init()

  const files = await fg('**/*.md', {
    cwd: srcPostPath(),
  })

  // eslint-disable-next-line array-callback-return
  files.map((f) => {
    const slug = f.replace(/^.+\//, '').replace(/\.md$/, '')
    let header: Record<string, unknown> = {}
    let markdown = fs.readFileSync(srcPostPath(f), 'utf8')

    if (markdown.startsWith('---\n')) {
      const [h, c = ''] = markdown.substr(4).split(/---\n(.*)$/s)
      header = yaml.safeLoad(h, {
        schema: yaml.JSON_SCHEMA,
      }) as Record<string, unknown>
      markdown = c
    }

    const makeHtml = new MakeHTML(slug)

    const { title, date, image, tag } = (() => {
      const { title, date, image, tag } = header
      return z
        .object({
          title: z.string(),
          date: z.date().optional(),
          image: z.string().optional(),
          tag: z.array(z.string()).optional(),
        })
        .parse({ title, date, image, tag })
    })()

    const content = makeHtml.clean(markdown)
    const excerptHtml = makeHtml.parse(
      markdown.split(/<!-- excerpt(?:_separator)? -->/)[0]
    )
    const contentHtml = makeHtml.parse(markdown)

    db.insert({
      slug,
      title,
      date,
      image,
      tag,
      content,
      excerptHtml,
      contentHtml,
    })
  })
}

if (require.main === module) {
  main()
}