import subprocess
from fastapi import FastAPI, Response, status, Query
from typing import Annotated

from mpai_cae_arp.types.schema import Info
from mpai_cae_arp.files import FileType, File

info = File("config/server.yaml", FileType.YAML).get_content()


app = FastAPI(**info)


@app.get("/")
async def list_all_entrypoints() -> list[str]:
    """
    Get the list of available main routes.
    """
    return ["restore", "description", "docs"]


@app.get("/description")
async def get_server_info() -> Info:
    """
    Retrieve all the informations about the software running on the server.
    """
    return info


@app.get("/restore", status_code=200)
async def restore(
        response: Response,
        equalization_w: Annotated[str, Query(
            description="Actual equalization of the audio tape applied during the recording.",
            example="CCIR"
        )],
        equalization_r: Annotated[str, Query(
            description="Actual equalization of the audio tape applied during the playback.",
            example="NAB"
        )],
        speed_w: Annotated[str, Query(
            description="Actual speed of the audio tape applied during the recording.",
            example="7.5"
        )],
        speed_r: Annotated[str, Query(
            description="Actual speed of the audio tape applied during the playback.",
            example="15"
        )],
        files_name: Annotated[str, Query(
            description="Name of the audio/video file to be analyzed without the extension.",
            example="filename"
        )],
        working_path: Annotated[str, Query(
            description="Path to the directory containing the preservation files.",
            examples={
                "Absolute path": {"value": "/home/user/preservation"},
                "Relative path": {"value": "preservation"}
            }
        )] = None
    ) -> dict:
    
    process = [
        "python",
        "src/tapeAudioRestoration.py",
        "--files_name", files_name,
        "--equalization-w", equalization_w,
        "--equalization-r", equalization_r,
        "--speed-w", speed_w,
        "--speed-r", speed_r
        ]

    if working_path is not None:
        process.extend(["--working_path", working_path])
    else:
        config = File("config/args.yaml", FileType.YAML).get_content()
        process.extend(["--working_path", config["WORKING_PATH"]])
        

    cprocess = subprocess.run(process, capture_output=True)

    if cprocess.returncode == 0:
        
        editing_list = File("EditingList.json", FileType.JSON).get_content()
        return editing_list

    else:
        response.status_code = status.HTTP_412_PRECONDITION_FAILED
        return {"error": {
            "returncode": cprocess.returncode,
            "stdout": cprocess.stdout.decode("utf-8"),
            "stderr": cprocess.stderr.decode("utf-8"),
        }}