import { pgTable, uuid, text, integer, timestamp } from 'drizzle-orm/pg-core';
import { jsonb } from 'drizzle-orm/pg-core';
import { stackEnum, levelEnum, questionTypeEnum, questionStatusEnum, questionSourceEnum } from './enums.js';

export const questionBank = pgTable('question_bank', {
  id: uuid('id').primaryKey().defaultRandom(),
  stack: stackEnum('stack').notNull(),
  level: levelEnum('level').notNull(),
  type: questionTypeEnum('type').notNull(),
  questionText: text('question_text').notNull(),
  options: jsonb('options').$type<Array<{ key: string; text: string }>>(),
  correctAnswer: jsonb('correct_answer').$type<string | string[]>().notNull(),
  explanation: text('explanation').notNull(),
  status: questionStatusEnum('status').notNull().default('pending'),
  source: questionSourceEnum('source').notNull(),
  usageCount: integer('usage_count').notNull().default(0),
  createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  approvedAt: timestamp('approved_at', { withTimezone: true }),
});

export type QuestionBank = typeof questionBank.$inferSelect;
export type NewQuestionBank = typeof questionBank.$inferInsert;