import getReleasePlan from "@changesets/get-release-plan"
import { ComprehensiveRelease, NewChangeset } from "@changesets/types"
import { padStart, startCase } from "lodash"

export const reactPkg = "@teste-ui/react"

export const docsPkg = "@teste-ui/docs"

export function getPackageName(name: string) {
  return startCase(name.replace("@teste-ui/", ""))
}
export function getCurrentDate() {
  const date = new Date()
  const day = padStart(date.getDate().toString(), 2, "0")
  const month = padStart((date.getMonth() + 1).toString(), 2, "0")
  const year = date.getFullYear()

  return `## ${day}-${month}-${year}`
}

/* -----------------------------------------------------------------------------
 * Collect and sort the changesets
 * -----------------------------------------------------------------------------*/

type Options = {
  cwd: string
  sinceRef?: string
  exclude?: string[]
}

export async function getChangesetEntries(options: Options) {
  const { cwd, sinceRef, exclude = [docsPkg] } = options

  const releasePlan = await getReleasePlan(cwd, sinceRef)

  const releases = releasePlan.releases
    .filter(
      (release) => release.name === reactPkg || release.changesets.length > 0,
    )
    .filter((release) => !exclude.includes(release.name))
    .sort((a, b) => {
      if (a.name === reactPkg) return -1
      if (b.name === reactPkg) return 1
      return 0
    })

  return {
    releases,
    summary: releases.map((release) =>
      getReleaseSummary(releasePlan.changesets, release),
    ),
  }
}

/* -----------------------------------------------------------------------------
 * Get the release summary for each release
 * -----------------------------------------------------------------------------*/

export function getReleaseSummary(
  changesets: NewChangeset[],
  release: ComprehensiveRelease,
) {
  const formattedChangesets = release.changesets.map((changeset) => {
    const { summary } = changesets.find((cs) => cs.id === changeset) ?? {}
    return !summary || summary?.trim().startsWith("-")
      ? summary
      : `- ${summary} \n`
  })

  const subPackageName = `**${getPackageName(release.name)}** \`v${
    release.newVersion
  }\``

  const rootPackageName = `\`${reactPkg}@${release.newVersion}\``
  const displayName =
    release.name === reactPkg ? rootPackageName : subPackageName

  return {
    ...release,
    changesets: formattedChangesets,
    displayName: displayName.replace(/,\s*$/, ""),
  }
}