const AbstractGitState = require('./AbstractGitState')

class TagState extends AbstractGitState {

    async apply() {
        if ( !(await this.check()) ) {
            const repo = await this._repo()
            await repo.create_tag(this._config.tag)
        }
    }

    async check() {
        const repo = await this._repo()
        try {
            await repo.get_tag(this._config.tag)
            return true
        } catch (e) {
            return false
        }
    }

    async reverse() {
        if ( await this.check() ) {
            const repo = await this._repo()
            await repo.delete_tag(this._config.tag)
        }
    }

    failure_message() {
        return `The tag "${this._config.tag}" does not exist in the Git repo "${this._config.path}" on host "${this._host.name}."`
    }

    check_message() {
        return this.failure_message()
    }
}

module.exports = exports = TagState