CREATE TYPE "public"."level" AS ENUM('basic', 'beginner', 'intermediate', 'advanced', 'expert');--> statement-breakpoint
CREATE TYPE "public"."plan" AS ENUM('free', 'pro');--> statement-breakpoint
CREATE TYPE "public"."question_source" AS ENUM('llm_generated', 'manual');--> statement-breakpoint
CREATE TYPE "public"."question_status" AS ENUM('pending', 'approved', 'rejected');--> statement-breakpoint
CREATE TYPE "public"."question_type" AS ENUM('single_choice', 'multiple_select', 'true_false', 'short_text');--> statement-breakpoint
CREATE TYPE "public"."report_status" AS ENUM('open', 'resolved', 'dismissed');--> statement-breakpoint
CREATE TYPE "public"."self_level" AS ENUM('jun', 'mid', 'sen');--> statement-breakpoint
CREATE TYPE "public"."stack" AS ENUM('html', 'css', 'js', 'ts', 'react', 'vue', 'nodejs', 'git', 'web_basics');--> statement-breakpoint
CREATE TYPE "public"."subscription_status" AS ENUM('active', 'trialing', 'cancelled', 'expired');--> statement-breakpoint
CREATE TYPE "public"."test_mode" AS ENUM('fixed', 'infinite', 'marathon');--> statement-breakpoint
CREATE TYPE "public"."test_status" AS ENUM('in_progress', 'completed', 'abandoned');--> statement-breakpoint
CREATE TYPE "public"."user_role" AS ENUM('guest', 'free', 'pro', 'admin');--> statement-breakpoint
CREATE TABLE IF NOT EXISTS "users" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"email" varchar(255) NOT NULL,
	"password_hash" varchar(255) NOT NULL,
	"nickname" varchar(30) NOT NULL,
	"avatar_url" varchar(500),
	"country" varchar(100),
	"city" varchar(100),
	"self_level" "self_level",
	"is_public" boolean DEFAULT true NOT NULL,
	"role" "user_role" DEFAULT 'free' NOT NULL,
	"email_verified_at" timestamp with time zone,
	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
	"updated_at" timestamp with time zone DEFAULT now() NOT NULL,
	CONSTRAINT "users_email_unique" UNIQUE("email")
);
--> statement-breakpoint
CREATE TABLE IF NOT EXISTS "sessions" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"user_id" uuid NOT NULL,
	"refresh_token_hash" varchar(255) NOT NULL,
	"user_agent" varchar(500),
	"ip_address" varchar(45),
	"last_active_at" timestamp with time zone DEFAULT now() NOT NULL,
	"expires_at" timestamp with time zone NOT NULL,
	"created_at" timestamp with time zone DEFAULT now() NOT NULL
);
--> statement-breakpoint
CREATE TABLE IF NOT EXISTS "subscriptions" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"user_id" uuid NOT NULL,
	"plan" "plan" NOT NULL,
	"status" "subscription_status" NOT NULL,
	"started_at" timestamp with time zone NOT NULL,
	"expires_at" timestamp with time zone,
	"cancelled_at" timestamp with time zone,
	"payment_provider" varchar(50),
	"external_id" varchar(255),
	CONSTRAINT "subscriptions_user_id_unique" UNIQUE("user_id")
);
--> statement-breakpoint
CREATE TABLE IF NOT EXISTS "tests" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"user_id" uuid NOT NULL,
	"stack" "stack" NOT NULL,
	"level" "level" NOT NULL,
	"question_count" integer NOT NULL,
	"mode" "test_mode" DEFAULT 'fixed' NOT NULL,
	"status" "test_status" DEFAULT 'in_progress' NOT NULL,
	"score" integer,
	"started_at" timestamp with time zone DEFAULT now() NOT NULL,
	"finished_at" timestamp with time zone,
	"time_limit_seconds" integer
);
--> statement-breakpoint
CREATE TABLE IF NOT EXISTS "test_questions" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"test_id" uuid NOT NULL,
	"question_bank_id" uuid,
	"order_number" integer NOT NULL,
	"type" "question_type" NOT NULL,
	"question_text" text NOT NULL,
	"options" jsonb,
	"correct_answer" jsonb NOT NULL,
	"explanation" text NOT NULL,
	"user_answer" jsonb,
	"is_correct" boolean,
	"answered_at" timestamp with time zone
);
--> statement-breakpoint
CREATE TABLE IF NOT EXISTS "question_bank" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"stack" "stack" NOT NULL,
	"level" "level" NOT NULL,
	"type" "question_type" NOT NULL,
	"question_text" text NOT NULL,
	"options" jsonb,
	"correct_answer" jsonb NOT NULL,
	"explanation" text NOT NULL,
	"status" "question_status" DEFAULT 'pending' NOT NULL,
	"source" "question_source" NOT NULL,
	"usage_count" integer DEFAULT 0 NOT NULL,
	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
	"approved_at" timestamp with time zone
);
--> statement-breakpoint
CREATE TABLE IF NOT EXISTS "question_cache_meta" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"question_bank_id" uuid NOT NULL,
	"llm_model" varchar(100) NOT NULL,
	"prompt_hash" varchar(64) NOT NULL,
	"generation_time_ms" integer NOT NULL,
	"raw_response" jsonb,
	"created_at" timestamp with time zone DEFAULT now() NOT NULL
);
--> statement-breakpoint
CREATE TABLE IF NOT EXISTS "question_reports" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"question_bank_id" uuid NOT NULL,
	"user_id" uuid NOT NULL,
	"reason" text NOT NULL,
	"status" "report_status" DEFAULT 'open' NOT NULL,
	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
	"resolved_at" timestamp with time zone
);
--> statement-breakpoint
CREATE TABLE IF NOT EXISTS "user_stats" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"user_id" uuid NOT NULL,
	"stack" "stack" NOT NULL,
	"level" "level" NOT NULL,
	"total_questions" integer DEFAULT 0 NOT NULL,
	"correct_answers" integer DEFAULT 0 NOT NULL,
	"tests_taken" integer DEFAULT 0 NOT NULL,
	"last_test_at" timestamp with time zone,
	CONSTRAINT "user_stats_user_id_stack_level_unique" UNIQUE("user_id","stack","level")
);
--> statement-breakpoint
CREATE TABLE IF NOT EXISTS "audit_logs" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"admin_id" uuid NOT NULL,
	"action" varchar(100) NOT NULL,
	"target_type" varchar(50) NOT NULL,
	"target_id" uuid NOT NULL,
	"details" jsonb,
	"created_at" timestamp with time zone DEFAULT now() NOT NULL
);
--> statement-breakpoint
CREATE TABLE IF NOT EXISTS "user_question_log" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"user_id" uuid NOT NULL,
	"question_bank_id" uuid NOT NULL,
	"seen_at" timestamp with time zone DEFAULT now() NOT NULL
);
--> statement-breakpoint
CREATE TABLE IF NOT EXISTS "email_verification_codes" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"user_id" uuid NOT NULL,
	"code" varchar(10) NOT NULL,
	"expires_at" timestamp with time zone NOT NULL,
	"created_at" timestamp with time zone DEFAULT now() NOT NULL
);
--> statement-breakpoint
CREATE TABLE IF NOT EXISTS "password_reset_tokens" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"user_id" uuid NOT NULL,
	"token_hash" varchar(255) NOT NULL,
	"expires_at" timestamp with time zone NOT NULL,
	"created_at" timestamp with time zone DEFAULT now() NOT NULL
);
--> statement-breakpoint
DO $$ BEGIN
 ALTER TABLE "sessions" ADD CONSTRAINT "sessions_user_id_users_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."users"("id") ON DELETE cascade ON UPDATE no action;
EXCEPTION
 WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
DO $$ BEGIN
 ALTER TABLE "subscriptions" ADD CONSTRAINT "subscriptions_user_id_users_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."users"("id") ON DELETE cascade ON UPDATE no action;
EXCEPTION
 WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
DO $$ BEGIN
 ALTER TABLE "tests" ADD CONSTRAINT "tests_user_id_users_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."users"("id") ON DELETE cascade ON UPDATE no action;
EXCEPTION
 WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
DO $$ BEGIN
 ALTER TABLE "test_questions" ADD CONSTRAINT "test_questions_test_id_tests_id_fk" FOREIGN KEY ("test_id") REFERENCES "public"."tests"("id") ON DELETE cascade ON UPDATE no action;
EXCEPTION
 WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
DO $$ BEGIN
 ALTER TABLE "test_questions" ADD CONSTRAINT "test_questions_question_bank_id_question_bank_id_fk" FOREIGN KEY ("question_bank_id") REFERENCES "public"."question_bank"("id") ON DELETE set null ON UPDATE no action;
EXCEPTION
 WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
DO $$ BEGIN
 ALTER TABLE "question_cache_meta" ADD CONSTRAINT "question_cache_meta_question_bank_id_question_bank_id_fk" FOREIGN KEY ("question_bank_id") REFERENCES "public"."question_bank"("id") ON DELETE cascade ON UPDATE no action;
EXCEPTION
 WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
DO $$ BEGIN
 ALTER TABLE "question_reports" ADD CONSTRAINT "question_reports_question_bank_id_question_bank_id_fk" FOREIGN KEY ("question_bank_id") REFERENCES "public"."question_bank"("id") ON DELETE cascade ON UPDATE no action;
EXCEPTION
 WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
DO $$ BEGIN
 ALTER TABLE "question_reports" ADD CONSTRAINT "question_reports_user_id_users_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."users"("id") ON DELETE cascade ON UPDATE no action;
EXCEPTION
 WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
DO $$ BEGIN
 ALTER TABLE "user_stats" ADD CONSTRAINT "user_stats_user_id_users_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."users"("id") ON DELETE cascade ON UPDATE no action;
EXCEPTION
 WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
DO $$ BEGIN
 ALTER TABLE "audit_logs" ADD CONSTRAINT "audit_logs_admin_id_users_id_fk" FOREIGN KEY ("admin_id") REFERENCES "public"."users"("id") ON DELETE cascade ON UPDATE no action;
EXCEPTION
 WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
DO $$ BEGIN
 ALTER TABLE "user_question_log" ADD CONSTRAINT "user_question_log_user_id_users_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."users"("id") ON DELETE cascade ON UPDATE no action;
EXCEPTION
 WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
DO $$ BEGIN
 ALTER TABLE "user_question_log" ADD CONSTRAINT "user_question_log_question_bank_id_question_bank_id_fk" FOREIGN KEY ("question_bank_id") REFERENCES "public"."question_bank"("id") ON DELETE cascade ON UPDATE no action;
EXCEPTION
 WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
DO $$ BEGIN
 ALTER TABLE "email_verification_codes" ADD CONSTRAINT "email_verification_codes_user_id_users_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."users"("id") ON DELETE cascade ON UPDATE no action;
EXCEPTION
 WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
DO $$ BEGIN
 ALTER TABLE "password_reset_tokens" ADD CONSTRAINT "password_reset_tokens_user_id_users_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."users"("id") ON DELETE cascade ON UPDATE no action;
EXCEPTION
 WHEN duplicate_object THEN null;
END $$;