CREATE TABLE IF NOT EXISTS "telephony_calls" (
    "id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
    "tenant_id" bigint NOT NULL,
    "direction" text NOT NULL,
    "status" text DEFAULT 'ringing' NOT NULL,
    "local_extension" text,
    "remote_number" text,
    "remote_display_name" text,
    "sip_call_id" text,
    "started_at" timestamp with time zone DEFAULT now() NOT NULL,
    "answered_at" timestamp with time zone,
    "ended_at" timestamp with time zone,
    "duration_seconds" integer,
    "created_at" timestamp with time zone DEFAULT now() NOT NULL,
    "updated_at" timestamp with time zone,
    "created_by" uuid,
    "updated_by" uuid
);

DO $$
BEGIN
    IF NOT EXISTS (
        SELECT 1 FROM pg_constraint WHERE conname = 'telephony_calls_tenant_id_tenants_id_fk'
    ) THEN
        ALTER TABLE "telephony_calls"
            ADD CONSTRAINT "telephony_calls_tenant_id_tenants_id_fk"
            FOREIGN KEY ("tenant_id") REFERENCES "public"."tenants"("id")
            ON DELETE cascade ON UPDATE no action;
    END IF;

    IF NOT EXISTS (
        SELECT 1 FROM pg_constraint WHERE conname = 'telephony_calls_created_by_auth_users_id_fk'
    ) THEN
        ALTER TABLE "telephony_calls"
            ADD CONSTRAINT "telephony_calls_created_by_auth_users_id_fk"
            FOREIGN KEY ("created_by") REFERENCES "public"."auth_users"("id")
            ON DELETE no action ON UPDATE no action;
    END IF;

    IF NOT EXISTS (
        SELECT 1 FROM pg_constraint WHERE conname = 'telephony_calls_updated_by_auth_users_id_fk'
    ) THEN
        ALTER TABLE "telephony_calls"
            ADD CONSTRAINT "telephony_calls_updated_by_auth_users_id_fk"
            FOREIGN KEY ("updated_by") REFERENCES "public"."auth_users"("id")
            ON DELETE no action ON UPDATE no action;
    END IF;
END $$;

CREATE INDEX IF NOT EXISTS "telephony_calls_tenant_started_idx"
    ON "telephony_calls" USING btree ("tenant_id", "started_at");

CREATE INDEX IF NOT EXISTS "telephony_calls_created_by_idx"
    ON "telephony_calls" USING btree ("tenant_id", "created_by");

CREATE INDEX IF NOT EXISTS "telephony_calls_sip_call_idx"
    ON "telephony_calls" USING btree ("tenant_id", "sip_call_id");