-- CreateTable
CREATE TABLE "ActivityBoard" (
    "id" TEXT NOT NULL,
    "organizationId" TEXT NOT NULL,
    "name" TEXT NOT NULL,
    "isDefault" BOOLEAN NOT NULL DEFAULT false,
    "position" INTEGER NOT NULL DEFAULT 0,
    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updatedAt" TIMESTAMP(3) NOT NULL,

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

-- CreateIndex
CREATE UNIQUE INDEX "ActivityBoard_organizationId_name_key" ON "ActivityBoard"("organizationId", "name");

-- CreateIndex
CREATE INDEX "ActivityBoard_organizationId_position_idx" ON "ActivityBoard"("organizationId", "position");

-- AddForeignKey
ALTER TABLE "ActivityBoard" ADD CONSTRAINT "ActivityBoard_organizationId_fkey" FOREIGN KEY ("organizationId") REFERENCES "Organization"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- Backfill: one default board per organization that already has activity stages
INSERT INTO "ActivityBoard" ("id", "organizationId", "name", "isDefault", "position", "createdAt", "updatedAt")
SELECT 'actb_' || md5(s."organizationId" || clock_timestamp()::text), s."organizationId", 'کارهای اصلی', true, 0, CURRENT_TIMESTAMP, CURRENT_TIMESTAMP
FROM (SELECT DISTINCT "organizationId" FROM "ActivityStage") AS s;

-- AlterTable: stages belong to a board
ALTER TABLE "ActivityStage" ADD COLUMN "boardId" TEXT;

UPDATE "ActivityStage" AS st
SET "boardId" = b."id"
FROM "ActivityBoard" AS b
WHERE b."organizationId" = st."organizationId" AND b."isDefault" = true;

ALTER TABLE "ActivityStage" ALTER COLUMN "boardId" SET NOT NULL;

-- Stage names are unique per board (not per organization)
DROP INDEX "ActivityStage_organizationId_name_key";

-- CreateIndex
CREATE UNIQUE INDEX "ActivityStage_boardId_name_key" ON "ActivityStage"("boardId", "name");

-- CreateIndex
CREATE INDEX "ActivityStage_boardId_position_idx" ON "ActivityStage"("boardId", "position");

-- AddForeignKey
ALTER TABLE "ActivityStage" ADD CONSTRAINT "ActivityStage_boardId_fkey" FOREIGN KEY ("boardId") REFERENCES "ActivityBoard"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AlterTable: activities optionally point at a board (null = default board)
ALTER TABLE "Activity" ADD COLUMN "boardId" TEXT;

-- CreateIndex
CREATE INDEX "Activity_boardId_idx" ON "Activity"("boardId");

-- AddForeignKey
ALTER TABLE "Activity" ADD CONSTRAINT "Activity_boardId_fkey" FOREIGN KEY ("boardId") REFERENCES "ActivityBoard"("id") ON DELETE SET NULL ON UPDATE CASCADE;