-- CreateTable
CREATE TABLE "User" (
    "id" TEXT NOT NULL PRIMARY KEY,
    "email" TEXT NOT NULL,
    "username" TEXT NOT NULL,
    "name" TEXT,
    "passwordHash" TEXT NOT NULL,
    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updatedAt" DATETIME NOT NULL
);

-- CreateTable
CREATE TABLE "Role" (
    "id" TEXT NOT NULL PRIMARY KEY,
    "name" TEXT NOT NULL
);

-- CreateTable
CREATE TABLE "UserRole" (
    "userId" TEXT NOT NULL,
    "roleId" TEXT NOT NULL,
    "assignedAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,

    PRIMARY KEY ("userId", "roleId"),
    CONSTRAINT "UserRole_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User" ("id") ON DELETE RESTRICT ON UPDATE CASCADE,
    CONSTRAINT "UserRole_roleId_fkey" FOREIGN KEY ("roleId") REFERENCES "Role" ("id") ON DELETE RESTRICT ON UPDATE CASCADE
);

-- CreateTable
CREATE TABLE "DeviceGroup" (
    "id" TEXT NOT NULL PRIMARY KEY,
    "name" TEXT NOT NULL
);

-- CreateTable
CREATE TABLE "Location" (
    "id" TEXT NOT NULL PRIMARY KEY,
    "name" TEXT NOT NULL
);

-- CreateTable
CREATE TABLE "Device" (
    "id" TEXT NOT NULL PRIMARY KEY,
    "inventoryNumber" TEXT NOT NULL,
    "serialNumber" TEXT,
    "productNumber" TEXT,
    "comment" TEXT,
    "groupId" TEXT,
    "locationId" TEXT,
    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updatedAt" DATETIME NOT NULL,
    "createdById" TEXT,
    "updatedById" TEXT,
    CONSTRAINT "Device_groupId_fkey" FOREIGN KEY ("groupId") REFERENCES "DeviceGroup" ("id") ON DELETE SET NULL ON UPDATE CASCADE,
    CONSTRAINT "Device_locationId_fkey" FOREIGN KEY ("locationId") REFERENCES "Location" ("id") ON DELETE SET NULL ON UPDATE CASCADE,
    CONSTRAINT "Device_createdById_fkey" FOREIGN KEY ("createdById") REFERENCES "User" ("id") ON DELETE SET NULL ON UPDATE CASCADE,
    CONSTRAINT "Device_updatedById_fkey" FOREIGN KEY ("updatedById") REFERENCES "User" ("id") ON DELETE SET NULL ON UPDATE CASCADE
);

-- CreateTable
CREATE TABLE "DeviceHistory" (
    "id" TEXT NOT NULL PRIMARY KEY,
    "deviceId" TEXT NOT NULL,
    "changeType" TEXT NOT NULL,
    "snapshot" JSONB NOT NULL,
    "changedAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "changedById" TEXT,
    CONSTRAINT "DeviceHistory_deviceId_fkey" FOREIGN KEY ("deviceId") REFERENCES "Device" ("id") ON DELETE RESTRICT ON UPDATE CASCADE,
    CONSTRAINT "DeviceHistory_changedById_fkey" FOREIGN KEY ("changedById") REFERENCES "User" ("id") ON DELETE SET NULL ON UPDATE CASCADE
);

-- CreateIndex
CREATE UNIQUE INDEX "User_email_key" ON "User"("email");

-- CreateIndex
CREATE UNIQUE INDEX "User_username_key" ON "User"("username");

-- CreateIndex
CREATE UNIQUE INDEX "Role_name_key" ON "Role"("name");

-- CreateIndex
CREATE UNIQUE INDEX "DeviceGroup_name_key" ON "DeviceGroup"("name");

-- CreateIndex
CREATE UNIQUE INDEX "Device_inventoryNumber_key" ON "Device"("inventoryNumber");

-- CreateIndex
CREATE INDEX "Device_inventoryNumber_idx" ON "Device"("inventoryNumber");

-- CreateIndex
CREATE INDEX "Device_groupId_idx" ON "Device"("groupId");

-- CreateIndex
CREATE INDEX "Device_locationId_idx" ON "Device"("locationId");

-- CreateIndex
CREATE INDEX "DeviceHistory_deviceId_changedAt_idx" ON "DeviceHistory"("deviceId", "changedAt");