-- CreateEnum
CREATE TYPE "chat_message_type" AS ENUM ('TEXT', 'SYSTEM');

-- CreateTable
CREATE TABLE "conversations" (
    "id" TEXT NOT NULL,
    "tenant_id" TEXT NOT NULL,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

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

-- CreateTable
CREATE TABLE "conversation_participants" (
    "conversation_id" TEXT NOT NULL,
    "user_id" TEXT NOT NULL,
    "last_read_at" TIMESTAMP(3),
    "joined_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

    CONSTRAINT "conversation_participants_pkey" PRIMARY KEY ("conversation_id","user_id")
);

-- CreateTable
CREATE TABLE "chat_messages" (
    "id" TEXT NOT NULL,
    "conversation_id" TEXT NOT NULL,
    "tenant_id" TEXT NOT NULL,
    "sender_id" TEXT NOT NULL,
    "body" TEXT NOT NULL,
    "type" "chat_message_type" NOT NULL DEFAULT 'TEXT',
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

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

-- CreateTable
CREATE TABLE "quick_reply_templates" (
    "id" TEXT NOT NULL,
    "tenant_id" TEXT NOT NULL,
    "created_by_user_id" TEXT NOT NULL,
    "text" TEXT NOT NULL,
    "is_global" BOOLEAN NOT NULL DEFAULT false,
    "sort_order" INTEGER NOT NULL DEFAULT 0,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

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

-- CreateTable
CREATE TABLE "messaging_settings" (
    "id" TEXT NOT NULL,
    "tenant_id" TEXT NOT NULL,
    "user_id" TEXT NOT NULL,
    "dnd_enabled" BOOLEAN NOT NULL DEFAULT false,
    "dnd_start" TEXT,
    "dnd_end" TEXT,
    "updated_at" TIMESTAMP(3) NOT NULL,

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

-- CreateIndex
CREATE INDEX "conversations_tenant_id_idx" ON "conversations"("tenant_id");

-- CreateIndex
CREATE INDEX "conversation_participants_user_id_idx" ON "conversation_participants"("user_id");

-- CreateIndex
CREATE INDEX "chat_messages_conversation_id_created_at_idx" ON "chat_messages"("conversation_id", "created_at");

-- CreateIndex
CREATE INDEX "chat_messages_tenant_id_idx" ON "chat_messages"("tenant_id");

-- CreateIndex
CREATE INDEX "quick_reply_templates_tenant_id_is_global_idx" ON "quick_reply_templates"("tenant_id", "is_global");

-- CreateIndex
CREATE INDEX "quick_reply_templates_tenant_id_created_by_user_id_idx" ON "quick_reply_templates"("tenant_id", "created_by_user_id");

-- CreateIndex
CREATE UNIQUE INDEX "messaging_settings_user_id_key" ON "messaging_settings"("user_id");

-- CreateIndex
CREATE INDEX "messaging_settings_tenant_id_idx" ON "messaging_settings"("tenant_id");

-- AddForeignKey
ALTER TABLE "conversations" ADD CONSTRAINT "conversations_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "tenants"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "conversation_participants" ADD CONSTRAINT "conversation_participants_conversation_id_fkey" FOREIGN KEY ("conversation_id") REFERENCES "conversations"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "chat_messages" ADD CONSTRAINT "chat_messages_conversation_id_fkey" FOREIGN KEY ("conversation_id") REFERENCES "conversations"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "quick_reply_templates" ADD CONSTRAINT "quick_reply_templates_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "tenants"("id") ON DELETE CASCADE ON UPDATE CASCADE;