const { Injectable } = require('flitter-di')
const UniversalPath = require('../logical/UniversalPath')

class Repository extends Injectable {
    static fromString(string) {
        const path = UniversalPath.fromString(string)
        return new this(path)
    }

    constructor(root_path) {
        super()
        this._host = root_path.host
        this._path = root_path
    }

    async is_repo() {
        const git_dir = await this._path.child('.git')
        await git_dir.classify()
        return git_dir.is_directory()
    }

    async init() {
        if ( !(await this.is_repo()) ) {
            await this._path.classify()
            if ( !this._path.is_valid() ) await this._path.touch(true)
            await this._git_cmd(`init`)
        }
    }

    async destroy() {
        const git_dir = await this._path.child('.git')
        await git_dir.unlink()
    }

    async clone(from) {
        await this._path.classify()
        if ( !this._path.is_valid() ) await this._path.touch(true)
        await this._git_cmd(`clone ${from} ${this._path.path}`)
    }

    async stage(...blobs) {
        await this._git_cmd(`add ${blobs.map(x => '"'+x+'"').join(' ')}`)
    }

    async unstage(...blobs) {
        await this._git_cmd(`reset ${blobs.map(x => '"'+x+'"').join(' ')}`)
    }

    async commit(message) {
        await this._git_cmd(`commit -m "${message}"`)
    }

    async tag(label) {
        await this._git_cmd(`tag "${label}"`)
    }

    async push(target = false, ref = false) {
        await this._git_cmd(`push${target ? ' '+target : ''}${ref ? ' '+ref : ''} --tags`)
    }

    async checkout(ref = 'master') {
        await this._git_cmd(`checkout "${ref}"`)
    }

    async stash() {
        await this._git_cmd(`stash`)
    }

    async _git_cmd(command) {
        const cd_cmd = await this._host.get_directory_change_command(this._path)
        const cmd = `${cd_cmd} && git ${command}`
        return this._host.run(cmd)
    }
}

module.exports = exports = Repository