-- ============================================================
-- Phase 2.1: Custom Fields System
-- Benutzerdefinierte Felder fuer PERSON, COMPANY, DEAL
-- ============================================================

-- --------------------------------------------------------
-- 1. Neue Enums
-- --------------------------------------------------------

CREATE TYPE "app_crm"."CustomFieldEntityType" AS ENUM (
  'PERSON', 'COMPANY', 'DEAL'
);

CREATE TYPE "app_crm"."CustomFieldType" AS ENUM (
  'TEXT', 'TEXTAREA', 'NUMBER', 'DATE',
  'DROPDOWN', 'MULTI_SELECT', 'CHECKBOX', 'URL'
);

-- --------------------------------------------------------
-- 2. crm_custom_field_defs — Feld-Definitionen
-- --------------------------------------------------------

CREATE TABLE "app_crm"."crm_custom_field_defs" (
  "id"          UUID NOT NULL DEFAULT gen_random_uuid(),
  "tenant_id"   UUID NOT NULL,
  "entity_type" "app_crm"."CustomFieldEntityType" NOT NULL,
  "name"        VARCHAR(200) NOT NULL,
  "label"       VARCHAR(200) NOT NULL,
  "field_type"  "app_crm"."CustomFieldType" NOT NULL,
  "options"     JSONB,
  "is_required" BOOLEAN NOT NULL DEFAULT false,
  "position"    INTEGER NOT NULL DEFAULT 0,
  "created_at"  TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
  "updated_at"  TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
  CONSTRAINT "crm_custom_field_defs_pkey" PRIMARY KEY ("id")
);

CREATE UNIQUE INDEX "crm_custom_field_defs_tenant_entity_name_key"
  ON "app_crm"."crm_custom_field_defs"("tenant_id", "entity_type", "name");

CREATE INDEX "crm_custom_field_defs_tenant_id_idx"
  ON "app_crm"."crm_custom_field_defs"("tenant_id");

CREATE INDEX "crm_custom_field_defs_tenant_entity_idx"
  ON "app_crm"."crm_custom_field_defs"("tenant_id", "entity_type");

-- --------------------------------------------------------
-- 3. crm_custom_field_values — Feld-Werte
-- --------------------------------------------------------

CREATE TABLE "app_crm"."crm_custom_field_values" (
  "id"            UUID NOT NULL DEFAULT gen_random_uuid(),
  "tenant_id"     UUID NOT NULL,
  "field_def_id"  UUID NOT NULL,
  "entity_id"     UUID NOT NULL,
  "value_text"    TEXT,
  "value_number"  DECIMAL(15, 4),
  "value_date"    TIMESTAMP(3),
  "value_boolean" BOOLEAN,
  "value_json"    JSONB,
  "created_at"    TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
  "updated_at"    TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
  CONSTRAINT "crm_custom_field_values_pkey" PRIMARY KEY ("id")
);

CREATE UNIQUE INDEX "crm_custom_field_values_field_entity_key"
  ON "app_crm"."crm_custom_field_values"("field_def_id", "entity_id");

CREATE INDEX "crm_custom_field_values_tenant_id_idx"
  ON "app_crm"."crm_custom_field_values"("tenant_id");

CREATE INDEX "crm_custom_field_values_tenant_entity_idx"
  ON "app_crm"."crm_custom_field_values"("tenant_id", "entity_id");

CREATE INDEX "crm_custom_field_values_field_def_id_idx"
  ON "app_crm"."crm_custom_field_values"("field_def_id");

-- --------------------------------------------------------
-- 4. Foreign Key: Values -> Definitions (CASCADE)
-- --------------------------------------------------------

ALTER TABLE "app_crm"."crm_custom_field_values"
  ADD CONSTRAINT "crm_custom_field_values_field_def_fkey"
    FOREIGN KEY ("field_def_id")
    REFERENCES "app_crm"."crm_custom_field_defs"("id")
    ON DELETE CASCADE ON UPDATE CASCADE;