import path from 'path'
import chalk from 'chalk'
import { dest, parallel, series, src } from 'gulp'
import gulpSass from 'gulp-sass'
import dartSass from 'sass'
import autoprefixer from 'gulp-autoprefixer'
import cleanCSS from 'gulp-clean-css'
import rename from 'gulp-rename'
import consola from 'consola'
import { epOutput } from '@kankan/build-utils'

const distFolder = path.resolve(__dirname, 'dist')
const distBundle = path.resolve(epOutput, 'theme-chalk')

/**
 * compile theme-chalk scss & minify
 * not use sass.sync().on('error', sass.logError) to throw exception
 * @returns
 */
function buildThemeChalk() {
    const sass = gulpSass(dartSass)
    const noElPrefixFile = /(index|base|display)/
    return src(path.resolve(__dirname, 'src/*.scss'))
        .pipe(sass.sync())
        .pipe(autoprefixer({ cascade: false }))
        .pipe(
            cleanCSS({}, details => {
                consola.success(`${chalk.cyan(details.name)}: ${chalk.yellow(details.stats.originalSize / 1000)} KB -> ${chalk.green(details.stats.minifiedSize / 1000)} KB`)
            })
        )
        .pipe(
            rename(path => {
                if (!noElPrefixFile.test(path.basename)) {
                    path.basename = `ui-${path.basename}`
                }
            })
        )
        .pipe(dest(distFolder))
}

/**
 * Build dark Css Vars
 * @returns
 */
function buildDarkCssVars() {
    const sass = gulpSass(dartSass)
    return src(path.resolve(__dirname, 'src/dark/css-vars.scss'))
        .pipe(sass.sync())
        .pipe(autoprefixer({ cascade: false }))
        .pipe(
            cleanCSS({}, details => {
                consola.success(`${chalk.cyan(details.name)}: ${chalk.yellow(details.stats.originalSize / 1000)} KB -> ${chalk.green(details.stats.minifiedSize / 1000)} KB`)
            })
        )
        .pipe(dest(`${distFolder}/dark`))
}

/**
 * copy from packages/theme-chalk/dist to dist/element-plus/theme-chalk
 */
export function copyThemeChalkBundle() {
    return src(`${distFolder}/**`).pipe(dest(distBundle))
}

/**
 * copy source file to packages
 */

export function copyThemeChalkSource() {
    return src(path.resolve(__dirname, 'src/**')).pipe(dest(path.resolve(distBundle, 'src')))
}
// buildDarkCssVars
export const build = parallel(copyThemeChalkSource, series(buildThemeChalk, copyThemeChalkBundle))

export default build