#
#  Copyright 2024 The InfiniFlow Authors. All Rights Reserved.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
#
from peewee import Expression
from api.db.db_models import DB
from api.db import StatusEnum, FileType, TaskStatus
from api.db.db_models import Task, Document, Knowledgebase, Tenant
from api.db.services.common_service import CommonService
from api.db.services.document_service import DocumentService


class TaskService(CommonService):
    model = Task

    @classmethod
    @DB.connection_context()
    def get_tasks(cls, tm, mod=0, comm=1, items_per_page=64):
        fields = [
            cls.model.id,
            cls.model.doc_id,
            cls.model.from_page,
            cls.model.to_page,
            Document.kb_id,
            Document.parser_id,
            Document.parser_config,
            Document.name,
            Document.type,
            Document.location,
            Document.size,
            Knowledgebase.tenant_id,
            Knowledgebase.language,
            Tenant.embd_id,
            Tenant.img2txt_id,
            Tenant.asr_id,
            cls.model.update_time]
        docs = cls.model.select(*fields) \
            .join(Document, on=(cls.model.doc_id == Document.id)) \
            .join(Knowledgebase, on=(Document.kb_id == Knowledgebase.id)) \
            .join(Tenant, on=(Knowledgebase.tenant_id == Tenant.id))\
            .where(
                Document.status == StatusEnum.VALID.value,
                ~(Document.type == FileType.VIRTUAL.value),
                cls.model.progress == 0,
                cls.model.update_time >= tm,
                (Expression(cls.model.create_time, "%%", comm) == mod))\
            .order_by(cls.model.update_time.asc())\
            .paginate(1, items_per_page)
        return list(docs.dicts())

    @classmethod
    @DB.connection_context()
    def do_cancel(cls, id):
        try:
            task = cls.model.get_by_id(id)
            _, doc = DocumentService.get_by_id(task.doc_id)
            return doc.run == TaskStatus.CANCEL.value or doc.progress < 0
        except Exception as e:
            pass
        return True

    @classmethod
    @DB.connection_context()
    def update_progress(cls, id, info):
        if info["progress_msg"]:
            cls.model.update(progress_msg=cls.model.progress_msg + "\n" + info["progress_msg"]).where(
                cls.model.id == id).execute()
        if "progress" in info:
            cls.model.update(progress=info["progress"]).where(
                cls.model.id == id).execute()