from fastapi import APIRouter, Depends, Request
from sqlalchemy.ext.asyncio import AsyncSession
from sqlmodel import select
from starlette.responses import StreamingResponse

from app.api.deps import get_async_session
from app.core.runner import pub_handler
from app.libs.paginate import cursor_page, CommonPage
from app.models.run import RunCreate, RunRead, RunUpdate, Run
from app.models.run_step import RunStep, RunStepRead
from app.schemas.runs import SubmitToolOutputsRunRequest
from app.schemas.threads import CreateThreadAndRun
from app.services.run.run import RunService
from app.services.thread.thread import ThreadService
from app.tasks.run_task import run_task
import json

router = APIRouter()
#print(run_task)

@router.get(
    "/{thread_id}/runs",
    response_model=CommonPage[RunRead],
)
async def list_runs(
    *,
    session: AsyncSession = Depends(get_async_session),
    thread_id: str,
):
    """
    Returns a list of runs belonging to a thread.
    """
    await ThreadService.get_thread(session=session, thread_id=thread_id)
    page = await cursor_page(select(Run).where(Run.thread_id == thread_id), session)
    page.data = [ast.model_dump(by_alias=True) for ast in page.data]
    return page.model_dump(by_alias=True)


@router.post(
    "/{thread_id}/runs",
    response_model=RunRead,
)
async def create_run(
    *, session: AsyncSession = Depends(get_async_session), thread_id: str, body: RunCreate = ..., request: Request
):
    """
    Create a run.
    """
    #body.stream = True
    db_run = await RunService.create_run(session=session, thread_id=thread_id, body=body)
    #db_run.file_ids = json.loads(db_run.file_ids)
    event_handler = pub_handler.StreamEventHandler(run_id=db_run.id, is_stream=body.stream)
    event_handler.pub_run_created(db_run)
    event_handler.pub_run_queued(db_run)
    print("22222233333333333344444444444444444555555555555555556")
    #print(run_task)
    run_task.apply_async(args=(db_run.id, body.stream))
    print("22222222222222222222222222222222")
    print(body.stream)
    db_run.file_ids = json.loads(db_run.file_ids)
    if body.stream:
        return pub_handler.sub_stream(db_run.id, request)
    else:
        return db_run.model_dump(by_alias=True)


@router.get(
    "/{thread_id}/runs/{run_id}"
#    response_model=RunRead,
)
async def get_run(*, session: AsyncSession = Depends(get_async_session), thread_id: str, run_id: str = ...) -> RunRead:
    """
    Retrieves a run.
    """
    run = await RunService.get_run(session=session, run_id=run_id, thread_id=thread_id)
    run.file_ids = json.loads(run.file_ids)
    run.failed_at = int(run.failed_at.timestamp()) if run.failed_at else None
    run.completed_at = int(run.completed_at.timestamp()) if run.completed_at else None
    print(run)
    return run.model_dump(by_alias=True)


@router.post(
    "/{thread_id}/runs/{run_id}",
    response_model=RunRead,
)
async def modify_run(
    *,
    session: AsyncSession = Depends(get_async_session),
    thread_id: str,
    run_id: str = ...,
    body: RunUpdate = ...,
) -> RunRead:
    """
    Modifies a run.
    """
    run = await RunService.modify_run(session=session, thread_id=thread_id, run_id=run_id, body=body)
    return run.model_dump(by_alias=True)


@router.post(
    "/{thread_id}/runs/{run_id}/cancel",
    response_model=RunRead,
)
async def cancel_run(
    *, session: AsyncSession = Depends(get_async_session), thread_id: str, run_id: str = ...
) -> RunRead:
    """
    Cancels a run that is `in_progress`.
    """
    run = await RunService.cancel_run(session=session, thread_id=thread_id, run_id=run_id)
    return run.model_dump(by_alias=True)


@router.get(
    "/{thread_id}/runs/{run_id}/steps",
    response_model=CommonPage[RunStepRead],
)
async def list_run_steps(
    *,
    session: AsyncSession = Depends(get_async_session),
    thread_id: str,
    run_id: str = ...,
):
    """
    Returns a list of run steps belonging to a run.
    """
    page = await cursor_page(
        select(RunStep).where(RunStep.thread_id == thread_id).where(RunStep.run_id == run_id), session
    )
    page.data = [ast.model_dump(by_alias=True) for ast in page.data]
    return page.model_dump(by_alias=True)


@router.get(
    "/{thread_id}/runs/{run_id}/steps/{step_id}",
    response_model=RunStepRead,
)
async def get_run_step(
    *,
    session: AsyncSession = Depends(get_async_session),
    thread_id: str,
    run_id: str = ...,
    step_id: str = ...,
) -> RunStep:
    """
    Retrieves a run step.
    """
    run_step = await RunService.get_run_step(thread_id=thread_id, run_id=run_id, step_id=step_id, session=session)
    return run_step.model_dump(by_alias=True)


@router.post(
    "/{thread_id}/runs/{run_id}/submit_tool_outputs",
    response_model=RunRead,
)
async def submit_tool_outputs_to_run(
    *,
    session: AsyncSession = Depends(get_async_session),
    thread_id: str,
    run_id: str = ...,
    body: SubmitToolOutputsRunRequest = ...,
    request: Request,
) -> RunRead:
    """
    When a run has the `status: "requires_action"` and `required_action.type` is `submit_tool_outputs`,
    this endpoint can be used to submit the outputs from the tool calls once they're all completed.
    All outputs must be submitted in a single request.
    """
    db_run = await RunService.submit_tool_outputs_to_run(session=session, thread_id=thread_id, run_id=run_id, body=body)
    # Resume async task
    if db_run.status == "queued":
        run_task.apply_async(args=(db_run.id, body.stream))

    if body.stream:
        return pub_handler.sub_stream(db_run.id, request)
    else:
        return db_run.model_dump(by_alias=True)


@router.post("/runs", response_model=RunRead)
async def create_thread_and_run(
    *, session: AsyncSession = Depends(get_async_session), body: CreateThreadAndRun, request: Request
) -> RunRead:
    """
    Create a thread and run it in one request.
    """
    run = await RunService.create_thread_and_run(session=session, body=body)
    if body.stream:
        return pub_handler.sub_stream(run.id, request)
    else:
        return run.model_dump(by_alias=True)