/*
 * @Author: Rindy
 * @Date: 2021-04-29 14:23:36
 * @LastEditors: Rindy
 * @LastEditTime: 2021-05-24 17:28:29
 * @Description: 注释
 */

import deps from '@kankan/sdk-deps'
import { minify } from 'terser'
import path from 'path'
import util from 'util'
import fs from 'fs-extra'
import isObject from 'is-plain-object'
import globby from 'globby'
import { bold, green, yellow } from 'colorette'

function stringify(value) {
    return util.inspect(value, { breakLength: Infinity })
}

async function isFile(filePath) {
    const fileStats = await fs.stat(filePath)

    return fileStats.isFile()
}

function renameTarget(target, rename, src) {
    const parsedPath = path.parse(target)

    return typeof rename === 'string' ? rename : rename(parsedPath.name, parsedPath.ext.replace('.', ''), src)
}

async function generateCopyTarget(src, dest, { flatten, rename, transform }) {
    if (transform && !(await isFile(src))) {
        throw new Error(`"transform" option works only on files: '${src}' must be a file`)
    }

    const { base, dir } = path.parse(src)
    const destinationFolder = flatten || (!flatten && !dir) ? dest : dir.replace(dir.split('/')[0], dest)

    return {
        src,
        dest: path.join(destinationFolder, rename ? renameTarget(base, rename, src) : base),
        ...(transform && { contents: await transform(await fs.readFile(src), base) }),
        renamed: rename,
        transformed: transform,
    }
}
export default function (options = {}) {
    const { mangle, copyOnce = false, flatten = true, hook = 'buildEnd', copy = {}, verbose = false, ...restPluginOptions } = options

    let copied = false

    return {
        name: 'rollup-plugin-deps', // 这个名字将会出现在在警告和报错中
        resolveId(importee) {
            if (importee.indexOf('sdk-deps.js') != -1) {
                return importee
            }
            return null // 其他的id不受影响
        },
        load(id) {
            if (id.indexOf('sdk-deps.js') != -1) {
                return ''
            }
            return null // 其他的id还是通过正常的方式解析
        },
        async buildEnd() {
            if (copyOnce && copied) {
                return
            }

            const targets = copy.targets || []

            const copyTargets = []

            if (Array.isArray(targets) && targets.length) {
                for (const target of targets) {
                    if (!isObject(target)) {
                        throw new Error(`${stringify(target)} target must be an object`)
                    }

                    const { dest, rename, name, transform, ...restTargetOptions } = target
                    const src = deps[name]
                    if (!src || !dest) {
                        throw new Error(`${stringify(target)} target must have "src" and "dest" properties`)
                    }

                    if (rename && typeof rename !== 'string' && typeof rename !== 'function') {
                        throw new Error(`${stringify(target)} target's "rename" property must be a string or a function`)
                    }

                    const matchedPaths = await globby(src, {
                        expandDirectories: false,
                        onlyFiles: false,
                        ...restPluginOptions,
                        ...restTargetOptions,
                    })

                    if (matchedPaths.length) {
                        for (const matchedPath of matchedPaths) {
                            const generatedCopyTargets = Array.isArray(dest)
                                ? await Promise.all(dest.map(destination => generateCopyTarget(matchedPath, destination, { flatten, rename, transform })))
                                : [await generateCopyTarget(matchedPath, dest, { flatten, rename, transform })]

                            copyTargets.push(...generatedCopyTargets)
                        }
                    }
                }
            }

            if (copyTargets.length) {
                console.log(green('正在复制'))
                if (verbose) {
                    console.log(green('copied:'))
                }

                for (const copyTarget of copyTargets) {
                    const { contents, dest, src, transformed } = copyTarget

                    if (transformed) {
                        await fs.outputFile(dest, contents, restPluginOptions)
                    } else {
                        await fs.copy(src, dest, restPluginOptions)
                    }

                    if (verbose) {
                        let message = green(`  ${bold(src)} → ${bold(dest)}`)
                        const flags = Object.entries(copyTarget)
                            .filter(([key, value]) => ['renamed', 'transformed'].includes(key) && value)
                            .map(([key]) => key.charAt(0).toUpperCase())

                        if (flags.length) {
                            message = `${message} ${yellow(`[${flags.join(', ')}]`)}`
                        }

                        console.log(message)
                    }
                }
                console.log(green('完成复制'))
            } else if (verbose) {
                console.log(yellow('no items to copy'))
            }

            copied = true
        },
        transform(source, id) {},
        buildStart() {},
        async generateBundle(options, bundle, isWrite) {
            console.log(green('正在压缩依赖'))
            const source = []
            for (let i = 0; i < deps.js.length; i++) {
                let file = deps.js[i]
                if (fs.existsSync(file)) {
                    let code = fs.readFileSync(file).toString()
                    if (!/\.(min|prod)\.js$/.test(file)) {
                        if (mangle) {
                            code = (await minify(code, { mangle: true })).code
                        }
                    }
                    source.push(code)
                }
            }
            this.emitFile({ type: 'asset', fileName: options.file.replace(/\\/g, '/').split('/').pop(), source: source.join(';\r\n') })
            console.log(green('完成压缩依赖'))
        },
    }
}