import type {Migration} from '@holllo/migration-helper';

export const dataMigrations: Array<Migration<string>> = [
  {
    version: '0.1.7',
    async migrate(data: Record<string, any>) {
      const migrated: Record<string, any> = {
        version: '0.1.7',
      };

      const items = (data.queue as Queue.Item[]) ?? [];
      for (const item of items) {
        const key = `qi${item.id}`;
        migrated[key] = item;
      }

      return migrated;
    },
  },
  {
    version: '0.3.0',
    async migrate(data: Record<string, any>) {
      const migrated: Record<string, any> = {
        version: '0.3.0',
      };

      for (const [key, value] of Object.entries<Queue.Item>(data)) {
        if (key.startsWith('qi')) {
          migrated[key] = value;
          migrated[key].sortIndex = value.id;
        }
      }

      return migrated;
    },
  },
];

export function deserializeQueue(data: Record<string, any>): Queue.Item[] {
  const deserialized: Queue.Item[] = [];

  for (const [key, item] of Object.entries(data)) {
    if (/^qi\d+$/.test(key)) {
      item.added = new Date(item.added);
      deserialized.push(item);
    }
  }

  return deserialized;
}

export function serializeQueue(queue: Queue.Item[]): Record<string, any> {
  const serialized: Record<string, any> = {};

  for (const item of queue) {
    const key = `qi${item.id}`;
    serialized[key] = {...item};
    serialized[key].added = item.added.toISOString();
  }

  return serialized;
}