-- CreateEnum
CREATE TYPE "UserRole" AS ENUM ('requester', 'worker');

-- CreateEnum
CREATE TYPE "TaskType" AS ENUM ('text_verification', 'image_labeling', 'survey', 'content_moderation');

-- CreateEnum
CREATE TYPE "TaskStatus" AS ENUM ('open', 'in_progress', 'completed', 'expired');

-- CreateEnum
CREATE TYPE "VerificationStatus" AS ENUM ('pending', 'approved', 'rejected');

-- CreateEnum
CREATE TYPE "PaymentStatus" AS ENUM ('pending', 'completed', 'failed');

-- CreateTable
CREATE TABLE "tasks" (
    "id" TEXT NOT NULL,
    "requester_id" TEXT NOT NULL,
    "title" VARCHAR(100) NOT NULL,
    "description" TEXT NOT NULL,
    "task_type" "TaskType" NOT NULL,
    "payment_amount" DECIMAL(10,2) NOT NULL,
    "status" "TaskStatus" NOT NULL DEFAULT 'open',
    "verification_criteria" JSONB NOT NULL,
    "max_submissions" INTEGER NOT NULL,
    "contract_task_id" INTEGER,
    "expires_at" TIMESTAMP(3) NOT NULL,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

    CONSTRAINT "tasks_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "users" (
    "id" TEXT NOT NULL,
    "wallet_address" TEXT NOT NULL,
    "phone_number" TEXT,
    "role" "UserRole" NOT NULL,
    "reputation_score" INTEGER NOT NULL DEFAULT 0,
    "total_earnings" DECIMAL(10,2) NOT NULL DEFAULT 0,
    "total_tasks_created" INTEGER NOT NULL DEFAULT 0,
    "total_tasks_completed" INTEGER NOT NULL DEFAULT 0,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

    CONSTRAINT "users_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "submissions" (
    "id" TEXT NOT NULL,
    "task_id" TEXT NOT NULL,
    "worker_id" TEXT NOT NULL,
    "submission_data" JSONB NOT NULL,
    "ai_verification_result" JSONB,
    "verification_status" "VerificationStatus" NOT NULL DEFAULT 'pending',
    "payment_transaction_hash" TEXT,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

    CONSTRAINT "submissions_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "payments" (
    "id" TEXT NOT NULL,
    "task_id" TEXT NOT NULL,
    "worker_id" TEXT NOT NULL,
    "amount" DECIMAL(10,2) NOT NULL,
    "transaction_hash" TEXT NOT NULL,
    "status" "PaymentStatus" NOT NULL DEFAULT 'pending',
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

    CONSTRAINT "payments_pkey" PRIMARY KEY ("id")
);

-- CreateIndex
CREATE INDEX "tasks_requester_id_idx" ON "tasks"("requester_id");

-- CreateIndex
CREATE INDEX "tasks_status_idx" ON "tasks"("status");

-- CreateIndex
CREATE INDEX "tasks_task_type_idx" ON "tasks"("task_type");

-- CreateIndex
CREATE INDEX "tasks_expires_at_idx" ON "tasks"("expires_at");

-- CreateIndex
CREATE INDEX "tasks_contract_task_id_idx" ON "tasks"("contract_task_id");

-- CreateIndex
CREATE UNIQUE INDEX "users_wallet_address_key" ON "users"("wallet_address");

-- CreateIndex
CREATE INDEX "users_wallet_address_idx" ON "users"("wallet_address");

-- CreateIndex
CREATE INDEX "users_role_idx" ON "users"("role");

-- CreateIndex
CREATE INDEX "submissions_task_id_idx" ON "submissions"("task_id");

-- CreateIndex
CREATE INDEX "submissions_worker_id_idx" ON "submissions"("worker_id");

-- CreateIndex
CREATE INDEX "submissions_verification_status_idx" ON "submissions"("verification_status");

-- CreateIndex
CREATE UNIQUE INDEX "submissions_task_id_worker_id_key" ON "submissions"("task_id", "worker_id");

-- CreateIndex
CREATE INDEX "payments_task_id_idx" ON "payments"("task_id");

-- CreateIndex
CREATE INDEX "payments_worker_id_idx" ON "payments"("worker_id");

-- CreateIndex
CREATE INDEX "payments_transaction_hash_idx" ON "payments"("transaction_hash");

-- CreateIndex
CREATE INDEX "payments_status_idx" ON "payments"("status");

-- AddForeignKey
ALTER TABLE "tasks" ADD CONSTRAINT "tasks_requester_id_fkey" FOREIGN KEY ("requester_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "submissions" ADD CONSTRAINT "submissions_task_id_fkey" FOREIGN KEY ("task_id") REFERENCES "tasks"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "submissions" ADD CONSTRAINT "submissions_worker_id_fkey" FOREIGN KEY ("worker_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "payments" ADD CONSTRAINT "payments_task_id_fkey" FOREIGN KEY ("task_id") REFERENCES "tasks"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "payments" ADD CONSTRAINT "payments_worker_id_fkey" FOREIGN KEY ("worker_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;