-- Document Center: template folders, folder-level variable mappings, and generation targets
-- Safe to run multiple times (CREATE TABLE IF NOT EXISTS, CREATE INDEX IF NOT EXISTS).

CREATE TABLE IF NOT EXISTS "document_template_folders" (
	"id" serial PRIMARY KEY NOT NULL,
	"organization_id" integer NOT NULL,
	"parent_id" integer,
	"name" varchar(100) NOT NULL,
	"position" integer DEFAULT 0 NOT NULL,
	"created_at" timestamp DEFAULT now(),
	"updated_at" timestamp DEFAULT now()
);
--> statement-breakpoint

CREATE TABLE IF NOT EXISTS "document_folder_mappings" (
	"id" serial PRIMARY KEY NOT NULL,
	"folder_id" integer NOT NULL,
	"code" varchar(100) NOT NULL,
	"label" varchar(200),
	"description" text,
	"source" varchar(30) NOT NULL,
	"mapping" jsonb DEFAULT '{}'::jsonb,
	"default_value" text,
	"sort_order" integer DEFAULT 0,
	"created_at" timestamp DEFAULT now()
);
--> statement-breakpoint

-- Add folder and target columns to document_templates
ALTER TABLE "document_templates" ADD COLUMN IF NOT EXISTS "folder_id" integer;
ALTER TABLE "document_templates" ADD COLUMN IF NOT EXISTS "target_form_id" integer;
ALTER TABLE "document_templates" ADD COLUMN IF NOT EXISTS "target_field_code" varchar(100);
ALTER TABLE "document_templates" ADD COLUMN IF NOT EXISTS "target_task_source" varchar(20) DEFAULT 'current';
ALTER TABLE "document_templates" ADD COLUMN IF NOT EXISTS "target_source_field_code" varchar(100);

-- Foreign keys
ALTER TABLE "document_template_folders" DROP CONSTRAINT IF EXISTS "document_template_folders_organization_id_organizations_id_fk";
ALTER TABLE "document_template_folders" ADD CONSTRAINT "document_template_folders_organization_id_organizations_id_fk" FOREIGN KEY ("organization_id") REFERENCES "organizations"("id") ON DELETE cascade;
-- parent_id не объявляем как FK, чтобы избежать циклической ссылки в Drizzle ORM (как у других деревьев: form_folders, directory_folders, roles)

ALTER TABLE "document_folder_mappings" DROP CONSTRAINT IF EXISTS "document_folder_mappings_folder_id_document_template_folders_id_fk";
ALTER TABLE "document_folder_mappings" ADD CONSTRAINT "document_folder_mappings_folder_id_document_template_folders_id_fk" FOREIGN KEY ("folder_id") REFERENCES "document_template_folders"("id") ON DELETE cascade;

ALTER TABLE "document_templates" DROP CONSTRAINT IF EXISTS "document_templates_folder_id_document_template_folders_id_fk";
ALTER TABLE "document_templates" ADD CONSTRAINT "document_templates_folder_id_document_template_folders_id_fk" FOREIGN KEY ("folder_id") REFERENCES "document_template_folders"("id") ON DELETE set null;
ALTER TABLE "document_templates" DROP CONSTRAINT IF EXISTS "document_templates_target_form_id_forms_id_fk";
ALTER TABLE "document_templates" ADD CONSTRAINT "document_templates_target_form_id_forms_id_fk" FOREIGN KEY ("target_form_id") REFERENCES "forms"("id") ON DELETE set null;

-- Indexes
CREATE INDEX IF NOT EXISTS "document_template_folders_org_parent_idx" ON "document_template_folders" ("organization_id", "parent_id");
CREATE INDEX IF NOT EXISTS "document_template_folders_position_idx" ON "document_template_folders" ("position");
CREATE UNIQUE INDEX IF NOT EXISTS "document_folder_mappings_code_unique" ON "document_folder_mappings" ("folder_id", "code");
CREATE INDEX IF NOT EXISTS "document_templates_org_folder_idx" ON "document_templates" ("organization_id", "folder_id");