#!/usr/bin/env python
#
# Copyright (c) Microsoft Corporation.
# Licensed under the MIT License.

import logging
from datetime import datetime, timedelta
from typing import List, Optional, Tuple

from onefuzztypes.enums import JobState, TaskState
from onefuzztypes.models import Job as BASE_JOB

from .orm import MappingIntStrAny, ORMMixin, QueryFilter
from .tasks.main import Task


class Job(BASE_JOB, ORMMixin):
    @classmethod
    def key_fields(cls) -> Tuple[str, Optional[str]]:
        return ("job_id", None)

    @classmethod
    def search_states(cls, *, states: Optional[List[JobState]] = None) -> List["Job"]:
        query: QueryFilter = {}
        if states:
            query["state"] = states
        return cls.search(query=query)

    @classmethod
    def search_expired(cls) -> List["Job"]:
        time_filter = "end_time lt datetime'%s'" % datetime.utcnow().isoformat()

        return cls.search(
            query={"state": JobState.available()}, raw_unchecked_filter=time_filter
        )

    def save_exclude(self) -> Optional[MappingIntStrAny]:
        return {"task_info": ...}

    def event_include(self) -> Optional[MappingIntStrAny]:
        return {
            "job_id": ...,
            "state": ...,
            "error": ...,
        }

    def telemetry_include(self) -> Optional[MappingIntStrAny]:
        return {
            "machine_id": ...,
            "state": ...,
            "scaleset_id": ...,
        }

    def init(self) -> None:
        logging.info("init job: %s", self.job_id)
        self.state = JobState.enabled
        self.save()

    def stopping(self) -> None:
        self.state = JobState.stopping
        logging.info("stopping job: %s", self.job_id)
        not_stopped = [
            task
            for task in Task.search(query={"job_id": [self.job_id]})
            if task.state != TaskState.stopped
        ]

        if not_stopped:
            for task in not_stopped:
                task.mark_stopping()
        else:
            self.state = JobState.stopped
        self.save()

    def on_start(self) -> None:
        # try to keep this effectively idempotent
        if self.end_time is None:
            self.end_time = datetime.utcnow() + timedelta(hours=self.config.duration)
            self.save()