-- CreateEnum
CREATE TYPE "AssignmentStatus" AS ENUM ('ACTIVE', 'ON_LEAVE', 'SIGNED_OFF');

-- AlterEnum
ALTER TYPE "CrewActionType" ADD VALUE 'CREW_ONBOARDED';

-- AlterTable
ALTER TABLE "SalaryStructure" ADD COLUMN     "assignmentId" TEXT;

-- CreateTable
CREATE TABLE "CrewAssignment" (
    "id" TEXT NOT NULL,
    "status" "AssignmentStatus" NOT NULL DEFAULT 'ACTIVE',
    "signOnDate" TIMESTAMP(3) NOT NULL,
    "signOffDate" TIMESTAMP(3),
    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updatedAt" TIMESTAMP(3) NOT NULL,
    "crewMemberId" TEXT NOT NULL,
    "rankId" TEXT NOT NULL,
    "vesselId" TEXT,
    "siteId" TEXT,
    "requisitionId" TEXT,

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

-- CreateTable
CREATE TABLE "ContractLetter" (
    "id" TEXT NOT NULL,
    "assignmentId" TEXT NOT NULL,
    "fileKey" TEXT NOT NULL,
    "salaryRestricted" BOOLEAN NOT NULL DEFAULT true,
    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

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

-- CreateIndex
CREATE UNIQUE INDEX "CrewAssignment_requisitionId_key" ON "CrewAssignment"("requisitionId");

-- CreateIndex
CREATE UNIQUE INDEX "ContractLetter_assignmentId_key" ON "ContractLetter"("assignmentId");

-- AddForeignKey
ALTER TABLE "SalaryStructure" ADD CONSTRAINT "SalaryStructure_assignmentId_fkey" FOREIGN KEY ("assignmentId") REFERENCES "CrewAssignment"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "CrewAssignment" ADD CONSTRAINT "CrewAssignment_crewMemberId_fkey" FOREIGN KEY ("crewMemberId") REFERENCES "CrewMember"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "CrewAssignment" ADD CONSTRAINT "CrewAssignment_rankId_fkey" FOREIGN KEY ("rankId") REFERENCES "Rank"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "CrewAssignment" ADD CONSTRAINT "CrewAssignment_vesselId_fkey" FOREIGN KEY ("vesselId") REFERENCES "Vessel"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "CrewAssignment" ADD CONSTRAINT "CrewAssignment_siteId_fkey" FOREIGN KEY ("siteId") REFERENCES "Site"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "CrewAssignment" ADD CONSTRAINT "CrewAssignment_requisitionId_fkey" FOREIGN KEY ("requisitionId") REFERENCES "Requisition"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "ContractLetter" ADD CONSTRAINT "ContractLetter_assignmentId_fkey" FOREIGN KEY ("assignmentId") REFERENCES "CrewAssignment"("id") ON DELETE CASCADE ON UPDATE CASCADE;