import {DatabaseService, FieldType, Inject, Injectable, Migration, raw} from '@extollo/lib'

/**
 * CreateFeedPostsTableMigration
 * ----------------------------------
 * Create the table to hold posts to the "updates" feed.
 */
@Injectable()
export default class CreateFeedPostsTableMigration extends Migration {
    @Inject()
    protected readonly db!: DatabaseService

    /**
     * Apply the migration.
     */
    async up(): Promise<void> {
        const schema = this.db.get().schema()
        const table = await schema.table('feed_posts')

        table.primaryKey('feed_post_id', FieldType.varchar)
            .required()

        // date, tag, text, visible

        table.column('posted_at')
            .type(FieldType.timestamp)
            .default(raw('NOW()'))
            .required()

        table.column('tag')
            .type(FieldType.varchar)
            .required()

        table.column('visible')
            .type(FieldType.bool)
            .default(false)
            .required()

        table.column('body')
            .type(FieldType.text)
            .default('')
            .required()

        await schema.commit(table)
    }

    /**
     * Undo the migration.
     */
    async down(): Promise<void> {
        const schema = this.db.get().schema()
        const table = await schema.table('feed_posts')

        table.dropIfExists()

        await schema.commit(table)
    }
}