import * as storage from "../storage/documents.storage";
import { db } from "../db";
import { documentSignatures, documentGenerations } from "@shared/schema";
import { eq, and, desc } from "drizzle-orm";
import type { DocumentSignature } from "@shared/schema";

export class SignatureService {
  async listByGeneration(generationId: number): Promise<DocumentSignature[]> {
    return storage.listDocumentSignatures(generationId);
  }

  async createPendingSignature(
    generationId: number,
    signedBy: number,
    comment?: string,
  ): Promise<DocumentSignature> {
    // Сбрасываем флаг isCurrent у предыдущих подписей
    await db
      .update(documentSignatures)
      .set({ isCurrent: false })
      .where(eq(documentSignatures.documentGenerationId, generationId));

    const signature = await storage.createDocumentSignature({
      documentGenerationId: generationId,
      type: "manual",
      status: "pending",
      signedBy,
      comment,
      isCurrent: true,
    });

    // Обновляем статус генерации
    const generation = await storage.getDocumentGeneration(generationId, 0);
    if (generation) {
      await db
        .update(documentGenerations)
        .set({ signatureStatus: "pending" })
        .where(eq(documentGenerations.id, generationId));
    }

    return signature;
  }

  async sign(generationId: number, userId: number, comment?: string): Promise<DocumentSignature> {
    // Сбрасываем флаг isCurrent
    await db
      .update(documentSignatures)
      .set({ isCurrent: false })
      .where(eq(documentSignatures.documentGenerationId, generationId));

    const signature = await storage.createDocumentSignature({
      documentGenerationId: generationId,
      type: "manual",
      status: "signed",
      signedBy: userId,
      signedAt: new Date(),
      comment,
      isCurrent: true,
    });

    await db
      .update(documentGenerations)
      .set({ signatureStatus: "signed" })
      .where(eq(documentGenerations.id, generationId));

    return signature;
  }

  async reject(generationId: number, userId: number, comment?: string): Promise<DocumentSignature> {
    await db
      .update(documentSignatures)
      .set({ isCurrent: false })
      .where(eq(documentSignatures.documentGenerationId, generationId));

    const signature = await storage.createDocumentSignature({
      documentGenerationId: generationId,
      type: "manual",
      status: "rejected",
      signedBy: userId,
      signedAt: new Date(),
      comment,
      isCurrent: true,
    });

    await db
      .update(documentGenerations)
      .set({ signatureStatus: "unsigned" })
      .where(eq(documentGenerations.id, generationId));

    return signature;
  }
}