CREATE TABLE IF NOT EXISTS "EnhanceProTask" (
  "id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
  "userId" uuid NOT NULL REFERENCES "User"("id") ON DELETE cascade,
  "chatId" uuid REFERENCES "Chat"("id") ON DELETE cascade,
  "messageId" uuid,
  "clientRequestId" varchar(64),
  "providerTaskId" varchar(128) NOT NULL,
  "taskKeyId" varchar(64),
  "status" varchar(16) NOT NULL DEFAULT 'pending',
  "prompt" text,
  "sourceImageUrl" text NOT NULL,
  "request" jsonb NOT NULL,
  "result" jsonb,
  "error" text,
  "pointsCost" integer NOT NULL DEFAULT 0,
  "pointsCharged" boolean NOT NULL DEFAULT false,
  "chargedAt" timestamp,
  "completedAt" timestamp,
  "createdAt" timestamp NOT NULL DEFAULT now(),
  "updatedAt" timestamp NOT NULL DEFAULT now()
);

CREATE UNIQUE INDEX IF NOT EXISTS "EnhanceProTask_providerTaskId_idx"
  ON "EnhanceProTask" ("providerTaskId");

CREATE UNIQUE INDEX IF NOT EXISTS "EnhanceProTask_userId_clientRequestId_idx"
  ON "EnhanceProTask" ("userId", "clientRequestId");