module.exports = {
    async up(knex) {

        console.log(`MIGRATION-- 2024-07-04-add-fansly-id-to-vtuber.js`);

        // Check if the 'fansly_id' column already exists in the 'vtubers' table
        const hasColumn = await knex.schema.hasColumn('vtubers', 'fansly_id');

        if (!hasColumn) {
            console.log(`Adding the 'fansly_id' column to the 'vtubers' table`);
            await knex.schema.table('vtubers', (table) => {
                table.string('fansly_id');
            });
        }

        // Get all vtubers from the database
        const vtubers = await knex.select('*').from('vtubers');

        // For each vtuber, populate fansly_id if it's null or undefined
        for (const [_, vtuber] of vtubers.entries()) {
            if (!vtuber.fansly_id) {
                await knex('vtubers').update({ fansly_id: '' }).where({ id: vtuber.id });
            }
        }
        
    },
};