o nֶh@srdZddlZddlZddlZddlZddlmZmZddlmZm Z m Z ddl Z e e ZGdddZeZdS)z6 File-based caching system for course recommendations N)datetime timedelta)DictOptionalListc @seZdZdZddedefddZdd ed ed ed efd dZded efddZdd ed ed ed e e e fddZ dd ed ede e d ed e f ddZd e fddZd e fddZd efddZdS) FileCourseCachez+File-based cache for course recommendations course_cache cache_dircache_duration_hourscCsF||_t|d|_tj|js!t|jtd|jdSdS)z Initialize the file-based cache system Args: cache_dir: Directory to store cache files cache_duration_hours: How long to keep cache (default 7 days) )hourszCreated cache directory: N) r rcache_durationospathexistsmakedirsloggerinfo)selfr r rK/var/www/eduai.edurigo.com/doc_train/edurigo_ai/TNA/testing/course_cache.py__init__s   zFileCourseCache.__init__onlinedomain field_prompt course_typereturncCs&|d|d|}t|S)z/Generate cache key from domain and field prompt_)hashlibmd5encode hexdigest)rrrr cache_datarrr_generate_cache_key!sz#FileCourseCache._generate_cache_key cache_keycCstj|jd|dS)zGet full path for cache filecourses_.json)rrjoinr )rr$rrr_get_cache_filename&sz#FileCourseCache._get_cache_filenamec Cs zi||||}||}tj|sWdSttj|}t||j kr8t |t d|WdSt |ddd }t|}Wdn1sOwYt d|d|d|d |d gWSty} zt d | WYd} ~ dSd} ~ ww) aJ Get cached course recommendations Args: domain: The domain (e.g., "Technology") field_prompt: The field/skill prompt course_type: Type of courses ("online" or "offline") Returns: Cached course data or None if not found/expired NzCache expired and removed: rutf-8encodingzCache hit for  -  ()courseszError reading cache: )r#r(rrrr fromtimestampgetmtimenowr removerropenjsonloadget Exceptionerror) rrrrr$ cache_file file_timefr"errrget_cached_courses*s(     z"FileCourseCache.get_cached_coursesr0c CszO||||}||}|||t|d}t|ddd}tj||dddWdn1s4wYt d t |d |d |d |d WdSt yj} zt d| WYd} ~ dSd} ~ ww)a} Cache course recommendations to file Args: domain: The domain (e.g., "Technology") field_prompt: The field/skill prompt courses: List of course recommendations course_type: Type of courses ("online" or "offline") Returns: True if caching successful, False otherwise )rrr cached_atr0wr*r+F)indent ensure_asciiNzCached z courses for r-r.r/TzError caching courses: ) r#r(rr3 isoformatr5r6dumprrlenr9r:) rrrr0rr$r;r"r=r>rrr cache_coursesPs&   (zFileCourseCache.cache_coursesc Csz&t|jD]}|dr|drttj|j|qt dWdSt yA}zt d|WYd}~dSd}~ww)zClear all cache filesr%r&zCache cleared successfullyTzError clearing cache: NF) rlistdirr startswithendswithr4rr'rrr9r:)rfilenamer>rrr clear_cachess zFileCourseCache.clear_cachec Cs.zvddt|jD}d}d}d}|D]R}tj|j|}ttj|}t||j krb|d7}z(t |ddd}t |} |t | dg7}Wd n1sVwYWqYq|d7}qt |||||j d d WSty} ztd | d t| iWYd } ~ Sd } ~ ww)zGet cache statisticscS$g|]}|dr|dr|qSr%r&rJrK.0r=rrr $z3FileCourseCache.get_cache_stats..rr)r*r+r0Ni)total_cache_files valid_cachesexpired_cachestotal_cached_coursesr zError getting cache stats: r:)rrIr rr'rr1r2r3r r5r6r7rGr8 total_secondsr9rr:str) r cache_filesrWrX total_coursesr; full_pathr<r=r"r>rrrget_cache_statss<   zFileCourseCache.get_cache_statsc CszEddt|jD}d}|D]%}tj|j|}ttj|}t||j kr5t ||d7}q|dkrCt d|d|WSt y`}zt d|WYd}~dSd}~ww) zRemove expired cache filescSrNrOrPrQrrrrSrTz9FileCourseCache.cleanup_expired_cache..rrUz Cleaned up z expired cache fileszError cleaning up cache: N)rrIr rr'rr1r2r3r r4rrr9r:)rr\ removed_countr;r^r<r>rrrcleanup_expired_caches$ z%FileCourseCache.cleanup_expired_cacheN)rr )r)__name__ __module__ __qualname____doc__r[intrr#r(rrrr?boolrHrMr_rarrrrrs$$&#%r)rer6rrtimerrtypingrrrlogging getLoggerrbrrrrrrrs  1