dify/api/services/website_service.py

import datetime
import json

from flask_login import current_user

from core.helper import encrypter
from core.rag.extractor.firecrawl.firecrawl_app import FirecrawlApp
from extensions.ext_redis import redis_client
from extensions.ext_storage import storage
from services.auth.api_key_auth_service import ApiKeyAuthService


class WebsiteService:
    @classmethod
    def document_create_args_validate(cls, args: dict):
        if "url" not in args or not args["url"]:
            raise ValueError("url is required")
        if "options" not in args or not args["options"]:
            raise ValueError("options is required")
        if "limit" not in args["options"] or not args["options"]["limit"]:
            raise ValueError("limit is required")

    @classmethod
    def crawl_url(cls, args: dict) -> dict:
        provider = args.get("provider")
        url = args.get("url")
        options = args.get("options")
        credentials = ApiKeyAuthService.get_auth_credentials(current_user.current_tenant_id, "website", provider)
        if provider == "firecrawl":
            # decrypt api_key
            api_key = encrypter.decrypt_token(
                tenant_id=current_user.current_tenant_id, token=credentials.get("config").get("api_key")
            )
            firecrawl_app = FirecrawlApp(api_key=api_key, base_url=credentials.get("config").get("base_url", None))
            crawl_sub_pages = options.get("crawl_sub_pages", False)
            only_main_content = options.get("only_main_content", False)
            if not crawl_sub_pages:
                params = {
                    "crawlerOptions": {
                        "includes": [],
                        "excludes": [],
                        "generateImgAltText": True,
                        "limit": 1,
                        "returnOnlyUrls": False,
                        "pageOptions": {"onlyMainContent": only_main_content, "includeHtml": False},
                    }
                }
            else:
                includes = options.get("includes").split(",") if options.get("includes") else []
                excludes = options.get("excludes").split(",") if options.get("excludes") else []
                params = {
                    "crawlerOptions": {
                        "includes": includes if includes else [],
                        "excludes": excludes if excludes else [],
                        "generateImgAltText": True,
                        "limit": options.get("limit", 1),
                        "returnOnlyUrls": False,
                        "pageOptions": {"onlyMainContent": only_main_content, "includeHtml": False},
                    }
                }
                if options.get("max_depth"):
                    params["crawlerOptions"]["maxDepth"] = options.get("max_depth")
            job_id = firecrawl_app.crawl_url(url, params)
            website_crawl_time_cache_key = f"website_crawl_{job_id}"
            time = str(datetime.datetime.now().timestamp())
            redis_client.setex(website_crawl_time_cache_key, 3600, time)
            return {"status": "active", "job_id": job_id}
        else:
            raise ValueError("Invalid provider")

    @classmethod
    def get_crawl_status(cls, job_id: str, provider: str) -> dict:
        credentials = ApiKeyAuthService.get_auth_credentials(current_user.current_tenant_id, "website", provider)
        if provider == "firecrawl":
            # decrypt api_key
            api_key = encrypter.decrypt_token(
                tenant_id=current_user.current_tenant_id, token=credentials.get("config").get("api_key")
            )
            firecrawl_app = FirecrawlApp(api_key=api_key, base_url=credentials.get("config").get("base_url", None))
            result = firecrawl_app.check_crawl_status(job_id)
            crawl_status_data = {
                "status": result.get("status", "active"),
                "job_id": job_id,
                "total": result.get("total", 0),
                "current": result.get("current", 0),
                "data": result.get("data", []),
            }
            if crawl_status_data["status"] == "completed":
                website_crawl_time_cache_key = f"website_crawl_{job_id}"
                start_time = redis_client.get(website_crawl_time_cache_key)
                if start_time:
                    end_time = datetime.datetime.now().timestamp()
                    time_consuming = abs(end_time - float(start_time))
                    crawl_status_data["time_consuming"] = f"{time_consuming:.2f}"
                    redis_client.delete(website_crawl_time_cache_key)
        else:
            raise ValueError("Invalid provider")
        return crawl_status_data

    @classmethod
    def get_crawl_url_data(cls, job_id: str, provider: str, url: str, tenant_id: str) -> dict | None:
        credentials = ApiKeyAuthService.get_auth_credentials(tenant_id, "website", provider)
        if provider == "firecrawl":
            file_key = "website_files/" + job_id + ".txt"
            if storage.exists(file_key):
                data = storage.load_once(file_key)
                if data:
                    data = json.loads(data.decode("utf-8"))
            else:
                # decrypt api_key
                api_key = encrypter.decrypt_token(tenant_id=tenant_id, token=credentials.get("config").get("api_key"))
                firecrawl_app = FirecrawlApp(api_key=api_key, base_url=credentials.get("config").get("base_url", None))
                result = firecrawl_app.check_crawl_status(job_id)
                if result.get("status") != "completed":
                    raise ValueError("Crawl job is not completed")
                data = result.get("data")
            if data:
                for item in data:
                    if item.get("source_url") == url:
                        return item
            return None
        else:
            raise ValueError("Invalid provider")

    @classmethod
    def get_scrape_url_data(cls, provider: str, url: str, tenant_id: str, only_main_content: bool) -> dict | None:
        credentials = ApiKeyAuthService.get_auth_credentials(tenant_id, "website", provider)
        if provider == "firecrawl":
            # decrypt api_key
            api_key = encrypter.decrypt_token(tenant_id=tenant_id, token=credentials.get("config").get("api_key"))
            firecrawl_app = FirecrawlApp(api_key=api_key, base_url=credentials.get("config").get("base_url", None))
            params = {"pageOptions": {"onlyMainContent": only_main_content, "includeHtml": False}}
            result = firecrawl_app.scrape_url(url, params)
            return result
        else:
            raise ValueError("Invalid provider")