-- Initiale Migration (manuell gepflegt, damit `prisma migrate deploy`
-- im Docker-Container ohne Datenbankzugriff zur Build-Zeit funktioniert).
-- Erzeugt aus prisma/schema.prisma mit: npx prisma migrate dev --name init

-- CreateEnum
CREATE TYPE "Role" AS ENUM ('ADMIN', 'USER');

CREATE TYPE "ReservationStatus" AS ENUM ('CONFIRMED', 'CANCELLED');

-- CreateTable
CREATE TABLE "users" (
    "id" TEXT NOT NULL,
    "email" TEXT NOT NULL,
    "password_hash" TEXT NOT NULL,
    "role" "Role" NOT NULL DEFAULT 'USER',
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

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

CREATE TABLE "calendars" (
    "id" TEXT NOT NULL,
    "owner_id" TEXT NOT NULL,
    "title" TEXT NOT NULL,
    "description" TEXT,
    "timezone" TEXT NOT NULL DEFAULT 'Europe/Berlin',
    "is_active" BOOLEAN NOT NULL DEFAULT true,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

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

CREATE TABLE "calendar_members" (
    "id" TEXT NOT NULL,
    "calendar_id" TEXT NOT NULL,
    "user_id" TEXT NOT NULL,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

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

CREATE TABLE "reservations" (
    "id" TEXT NOT NULL,
    "calendar_id" TEXT NOT NULL,
    "user_id" TEXT NOT NULL,
    "title" TEXT NOT NULL,
    "start_at" TIMESTAMP(3) NOT NULL,
    "end_at" TIMESTAMP(3) NOT NULL,
    "status" "ReservationStatus" NOT NULL DEFAULT 'CONFIRMED',
    "notes" TEXT,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

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

CREATE TABLE "invites" (
    "id" TEXT NOT NULL,
    "calendar_id" TEXT NOT NULL,
    "token_hash" TEXT NOT NULL,
    "expires_at" TIMESTAMP(3),
    "used_at" TIMESTAMP(3),
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

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

-- CreateIndex
CREATE UNIQUE INDEX "users_email_key" ON "users"("email");

CREATE UNIQUE INDEX "calendar_members_user_id_key" ON "calendar_members"("user_id");

CREATE INDEX "calendars_owner_id_idx" ON "calendars"("owner_id");

CREATE UNIQUE INDEX "calendar_members_calendar_id_user_id_key" ON "calendar_members"("calendar_id", "user_id");

CREATE INDEX "calendar_members_calendar_id_idx" ON "calendar_members"("calendar_id");

CREATE INDEX "reservations_calendar_id_start_at_idx" ON "reservations"("calendar_id", "start_at");

CREATE INDEX "reservations_user_id_idx" ON "reservations"("user_id");

CREATE UNIQUE INDEX "invites_token_hash_key" ON "invites"("token_hash");

CREATE INDEX "invites_calendar_id_idx" ON "invites"("calendar_id");

-- AddForeignKey
ALTER TABLE "calendars" ADD CONSTRAINT "calendars_owner_id_fkey" FOREIGN KEY ("owner_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;

ALTER TABLE "calendar_members" ADD CONSTRAINT "calendar_members_calendar_id_fkey" FOREIGN KEY ("calendar_id") REFERENCES "calendars"("id") ON DELETE CASCADE ON UPDATE CASCADE;

ALTER TABLE "calendar_members" ADD CONSTRAINT "calendar_members_user_id_fkey" FOREIGN KEY ("user_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;

ALTER TABLE "reservations" ADD CONSTRAINT "reservations_calendar_id_fkey" FOREIGN KEY ("calendar_id") REFERENCES "calendars"("id") ON DELETE CASCADE ON UPDATE CASCADE;

ALTER TABLE "reservations" ADD CONSTRAINT "reservations_user_id_fkey" FOREIGN KEY ("user_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;

ALTER TABLE "invites" ADD CONSTRAINT "invites_calendar_id_fkey" FOREIGN KEY ("calendar_id") REFERENCES "calendars"("id") ON DELETE CASCADE ON UPDATE CASCADE;