-- CreateEnum
CREATE TYPE "UserRole" AS ENUM ('ADMIN', 'EDITOR');
CREATE TYPE "ApprovalAction" AS ENUM ('CREATE', 'UPDATE', 'DELETE');
CREATE TYPE "ApprovalEntity" AS ENUM ('PROJECT', 'NEWS', 'CAREER', 'TEAM', 'MEDIA', 'SETTING', 'MESSAGE');
CREATE TYPE "ApprovalStatus" AS ENUM ('PENDING', 'APPROVED', 'REJECTED');

-- Normalize existing role values before type conversion
UPDATE "User" SET role = 'ADMIN' WHERE email = 'admin@ceylexrenewables.com';
UPDATE "User" SET role = 'EDITOR' WHERE role = 'admin';

-- AlterTable User.role
ALTER TABLE "User" ALTER COLUMN "role" DROP DEFAULT;
ALTER TABLE "User" ALTER COLUMN "role" TYPE "UserRole" USING (
  CASE
    WHEN role = 'ADMIN' THEN 'ADMIN'::"UserRole"
    WHEN role = 'EDITOR' THEN 'EDITOR'::"UserRole"
    ELSE 'EDITOR'::"UserRole"
  END
);
ALTER TABLE "User" ALTER COLUMN "role" SET DEFAULT 'EDITOR'::"UserRole";

-- CreateTable
CREATE TABLE "ApprovalRequest" (
    "id" TEXT NOT NULL,
    "action" "ApprovalAction" NOT NULL,
    "entity" "ApprovalEntity" NOT NULL,
    "entityId" TEXT,
    "payload" TEXT NOT NULL,
    "status" "ApprovalStatus" NOT NULL DEFAULT 'PENDING',
    "submittedById" TEXT NOT NULL,
    "reviewedById" TEXT,
    "rejectionReason" TEXT,
    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "reviewedAt" TIMESTAMP(3),

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

-- CreateIndex
CREATE INDEX "ApprovalRequest_status_createdAt_idx" ON "ApprovalRequest"("status", "createdAt");
CREATE INDEX "ApprovalRequest_submittedById_idx" ON "ApprovalRequest"("submittedById");
CREATE INDEX "ApprovalRequest_entity_entityId_idx" ON "ApprovalRequest"("entity", "entityId");

-- AddForeignKey
ALTER TABLE "ApprovalRequest" ADD CONSTRAINT "ApprovalRequest_submittedById_fkey" FOREIGN KEY ("submittedById") REFERENCES "User"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
ALTER TABLE "ApprovalRequest" ADD CONSTRAINT "ApprovalRequest_reviewedById_fkey" FOREIGN KEY ("reviewedById") REFERENCES "User"("id") ON DELETE SET NULL ON UPDATE CASCADE;