import { randomBytes } from "node:crypto";
import { mkdirSync } from "node:fs";
import { join } from "node:path";
import { CVParserModule as CVParserCoreModule } from "@cv/ai-parser";
import { AIModule } from "@cv/ai-provider";
import { FileExtractionModule } from "@cv/file-upload";
import { DatabaseModule } from "@cv/system";
import { Module } from "@nestjs/common";
import { MulterModule } from "@nestjs/platform-express";
import { diskStorage } from "multer";
import { DataImportModule } from "@/modules/data-import/data-import.module";
import { FileImportSource } from "@/modules/data-import/sources/file-import-source";
import { EducationModule } from "@/modules/education/education.module";
import { EmploymentModule } from "@/modules/job-experience/employment/employment.module";
import { ProfileModule } from "@/modules/profile/profile.module";
import { UserAiSettingsModule } from "@/modules/user-settings/user-ai-settings.module";
import { AIProviderResolverService } from "./ai-provider-resolver.service";
import { CVParserResolver } from "./cv-parser.resolver";
import { CVParserService } from "./cv-parser.service";
import { EntityResolverService } from "./entity-resolver.service";
import { FileUploadController } from "./file-upload.controller";
import { UploadFileResolver } from "./graphql/upload-file.resolver";
import { ImportOnboardingStep } from "./onboarding/import.step";

@Module({
  imports: [
    CVParserCoreModule.forConfig(),
    AIModule.forConfig(),
    FileExtractionModule.forRoot(),
    DatabaseModule,
    UserAiSettingsModule,
    ProfileModule,
    EmploymentModule,
    EducationModule,
    DataImportModule,
    MulterModule.register({
      storage: diskStorage({
        destination: (_req, _file, cb) => {
          const tmpDir = join(process.cwd(), "tmp", "cv-uploads");
          mkdirSync(tmpDir, { recursive: true });
          cb(null, tmpDir);
        },
        filename: (_req, file, cb) => {
          const uniqueSuffix = `${Date.now()}-${randomBytes(8).toString("hex")}`;
          const ext = file.originalname.split(".").pop() ?? "";
          cb(null, `${uniqueSuffix}.${ext}`);
        },
      }),
      limits: {
        fileSize: 10 * 1024 * 1024, // 10MB
      },
      fileFilter: (_req, file, cb) => {
        const allowedMimes = [
          "application/pdf",
          "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
          "text/plain",
          "text/markdown",
        ];

        if (allowedMimes.includes(file.mimetype)) {
          cb(null, true);
        } else {
          cb(
            new Error(
              `File type ${file.mimetype} not allowed. Supported: PDF, DOCX, TXT, MD`,
            ),
            false,
          );
        }
      },
    }),
  ],
  providers: [
    EntityResolverService,
    AIProviderResolverService,
    CVParserService,
    CVParserResolver,
    UploadFileResolver,
    ImportOnboardingStep,
    FileImportSource,
  ],
  controllers: [FileUploadController],
  exports: [CVParserService],
})
export class CVParserModule {}