import { defineSchema, defineTable } from "convex/server";
import { v, VId } from "convex/values";
import { authTables } from '@convex-dev/auth/server';

const applicationTables = {
  questions: defineTable({
    question: v.string(),
    options: v.array(v.string()),
    correctAnswer: v.number(),
    topic: v.string(),
    difficulty: v.optional(v.string()),
    explanation: v.optional(v.string()),
  })
    .index('by_topic', ['topic']),

  userProgress: defineTable({
    userId: v.id('users'),
    questionId: v.id('questions'),
    correctCount: v.number(),
    incorrectCount: v.number(),
    lastAttempted: v.number(),
  })
    .index('by_user', ['userId'])
    .index('by_user_and_question', ['userId', 'questionId']),

  quizSessions: defineTable({
    userId: v.id('users'),
    activeQuestions: v.array(v.id('questions')),
    missedQuestions: v.array(v.id('questions')),
    completedQuestions: v.array(v.id('questions')),
    currentQuestionIndex: v.number(),
    isActive: v.boolean(),
  })
    .index('by_user_and_active', ['userId', 'isActive']),
};

export default defineSchema({
  ...authTables,
  ...applicationTables,
});