'use strict';

/**
 * 迁移文件：创建作品提交表（work_submissions）
 * 存储选手上传的作品文件信息
 */

module.exports = {
  up: async (queryInterface, Sequelize) => {
    const { INTEGER, STRING, DATE } = Sequelize;

    await queryInterface.createTable('work_submissions', {
      id: {
        type: INTEGER,
        primaryKey: true,
        autoIncrement: true,
        allowNull: false,
        comment: '作品提交唯一标识',
      },
      contestant_id: {
        type: INTEGER,
        allowNull: false,
        comment: '选手 ID',
        references: {
          model: 'contestants',
          key: 'id',
        },
        onUpdate: 'CASCADE',
        onDelete: 'CASCADE',
      },
      file_type: {
        type: STRING(20),
        allowNull: false,
        comment: '文件类型（plan/ppt）',
      },
      file_name: {
        type: STRING(200),
        allowNull: false,
        comment: '原始文件名',
      },
      file_path: {
        type: STRING(500),
        allowNull: false,
        comment: '文件存储路径',
      },
      file_size: {
        type: INTEGER,
        allowNull: false,
        comment: '文件大小（字节）',
      },
      submit_time: {
        type: DATE,
        allowNull: false,
        comment: '提交时间',
      },
      score: {
        type: INTEGER,
        allowNull: true,
        defaultValue: null,
        comment: '作品得分',
      },
      created_at: {
        type: DATE,
        allowNull: false,
        comment: '创建时间',
      },
      updated_at: {
        type: DATE,
        allowNull: false,
        comment: '更新时间',
      },
    });

    await queryInterface.addIndex('work_submissions', ['contestant_id'], {
      name: 'idx_work_submissions_contestant_id',
    });
    await queryInterface.addIndex('work_submissions', ['file_type'], {
      name: 'idx_work_submissions_file_type',
    });
  },

  down: async (queryInterface) => {
    await queryInterface.dropTable('work_submissions');
  },
};