-- CreateEnum
CREATE TYPE "agent_state" AS ENUM ('OFFLINE', 'LOGGED_IN', 'AVAILABLE', 'RESERVED', 'RINGING', 'IN_CALL', 'WRAP_UP', 'PAUSED');

-- CreateTable
CREATE TABLE "agents" (
    "id" UUID NOT NULL,
    "tenant_id" UUID NOT NULL,
    "user_id" UUID NOT NULL,
    "extension_id" UUID,
    "name" TEXT NOT NULL,
    "max_no_answer" INTEGER NOT NULL DEFAULT 3,
    "wrap_up_time" INTEGER NOT NULL DEFAULT 10,
    "reject_delay_time" INTEGER NOT NULL DEFAULT 10,
    "busy_delay_time" INTEGER NOT NULL DEFAULT 60,
    "no_answer_delay_time" INTEGER NOT NULL DEFAULT 10,
    "state" "agent_state" NOT NULL DEFAULT 'OFFLINE',
    "state_updated_at" TIMESTAMP(3),
    "enabled" BOOLEAN NOT NULL DEFAULT true,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,
    "deleted_at" TIMESTAMP(3),

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

-- CreateTable
CREATE TABLE "tiers" (
    "id" UUID NOT NULL,
    "tenant_id" UUID NOT NULL,
    "queue_id" UUID NOT NULL,
    "agent_id" UUID NOT NULL,
    "level" INTEGER NOT NULL DEFAULT 1,
    "position" INTEGER NOT NULL DEFAULT 1,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

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

-- CreateTable
CREATE TABLE "agent_sessions" (
    "id" UUID NOT NULL,
    "tenant_id" UUID NOT NULL,
    "agent_id" UUID NOT NULL,
    "started_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "ended_at" TIMESTAMP(3),

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

-- CreateTable
CREATE TABLE "agent_state_events" (
    "id" UUID NOT NULL,
    "tenant_id" UUID NOT NULL,
    "agent_id" UUID NOT NULL,
    "state" "agent_state" NOT NULL,
    "occurred_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

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

-- CreateTable
CREATE TABLE "pause_reasons" (
    "id" UUID NOT NULL,
    "tenant_id" UUID NOT NULL,
    "name" TEXT NOT NULL,
    "code" TEXT NOT NULL,
    "description" TEXT,
    "max_duration" INTEGER,
    "paid" BOOLEAN NOT NULL DEFAULT false,
    "enabled" BOOLEAN NOT NULL DEFAULT true,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

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

-- CreateTable
CREATE TABLE "agent_pause_events" (
    "id" UUID NOT NULL,
    "tenant_id" UUID NOT NULL,
    "agent_id" UUID NOT NULL,
    "pause_reason_id" UUID NOT NULL,
    "started_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "ended_at" TIMESTAMP(3),

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

-- CreateIndex
CREATE INDEX "agents_tenant_id_idx" ON "agents"("tenant_id");

-- CreateIndex
CREATE UNIQUE INDEX "agents_tenant_id_user_id_key" ON "agents"("tenant_id", "user_id");

-- CreateIndex
CREATE INDEX "tiers_tenant_id_idx" ON "tiers"("tenant_id");

-- CreateIndex
CREATE UNIQUE INDEX "tiers_queue_id_agent_id_key" ON "tiers"("queue_id", "agent_id");

-- CreateIndex
CREATE INDEX "agent_sessions_tenant_id_agent_id_idx" ON "agent_sessions"("tenant_id", "agent_id");

-- CreateIndex
CREATE INDEX "agent_state_events_tenant_id_agent_id_occurred_at_idx" ON "agent_state_events"("tenant_id", "agent_id", "occurred_at");

-- CreateIndex
CREATE INDEX "pause_reasons_tenant_id_idx" ON "pause_reasons"("tenant_id");

-- CreateIndex
CREATE UNIQUE INDEX "pause_reasons_tenant_id_code_key" ON "pause_reasons"("tenant_id", "code");

-- CreateIndex
CREATE INDEX "agent_pause_events_tenant_id_agent_id_idx" ON "agent_pause_events"("tenant_id", "agent_id");

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

-- AddForeignKey
ALTER TABLE "agents" ADD CONSTRAINT "agents_user_id_fkey" FOREIGN KEY ("user_id") REFERENCES "users"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "agents" ADD CONSTRAINT "agents_extension_id_fkey" FOREIGN KEY ("extension_id") REFERENCES "extensions"("id") ON DELETE SET NULL ON UPDATE CASCADE;

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

-- AddForeignKey
ALTER TABLE "tiers" ADD CONSTRAINT "tiers_queue_id_fkey" FOREIGN KEY ("queue_id") REFERENCES "queues"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "tiers" ADD CONSTRAINT "tiers_agent_id_fkey" FOREIGN KEY ("agent_id") REFERENCES "agents"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

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

-- AddForeignKey
ALTER TABLE "agent_sessions" ADD CONSTRAINT "agent_sessions_agent_id_fkey" FOREIGN KEY ("agent_id") REFERENCES "agents"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

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

-- AddForeignKey
ALTER TABLE "agent_state_events" ADD CONSTRAINT "agent_state_events_agent_id_fkey" FOREIGN KEY ("agent_id") REFERENCES "agents"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

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

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

-- AddForeignKey
ALTER TABLE "agent_pause_events" ADD CONSTRAINT "agent_pause_events_agent_id_fkey" FOREIGN KEY ("agent_id") REFERENCES "agents"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "agent_pause_events" ADD CONSTRAINT "agent_pause_events_pause_reason_id_fkey" FOREIGN KEY ("pause_reason_id") REFERENCES "pause_reasons"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- Tabelas de negocio tenant-scoped: RLS obrigatorio em todas (ver docs/TENANT_ISOLATION.md).
ALTER TABLE "agents" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "agents" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "agents"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid);

ALTER TABLE "tiers" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "tiers" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "tiers"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid);

ALTER TABLE "agent_sessions" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "agent_sessions" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "agent_sessions"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid);

ALTER TABLE "agent_state_events" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "agent_state_events" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "agent_state_events"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid);

ALTER TABLE "pause_reasons" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "pause_reasons" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "pause_reasons"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid);

ALTER TABLE "agent_pause_events" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "agent_pause_events" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "agent_pause_events"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid);