import re
from typing import Iterator

from fastapi import APIRouter, Depends
from markdown import markdown

from ..config import Config
from ..dav_file import DavFile
from ._common import FileNameLister, PrefixFinder, PrefixUnique

router = APIRouter(prefix="/text", tags=["text"])

_lister = FileNameLister(
    remote_path="text",
    re=re.compile(
        r"\.(txt|md)$",
        flags=re.IGNORECASE,
    ),
)

_finder = PrefixFinder(_lister)
_unique = PrefixUnique(_finder)


async def get_ticker_lines() -> Iterator[str]:
    ticker = await DavFile("text/ticker.txt").string

    return (
        line.strip()
        for line in ticker.split("\n")
        if line.strip()
    )


async def get_ticker_content_lines(
    ticker_lines: Iterator[str] = Depends(get_ticker_lines),
) -> Iterator[str]:
    return (
        line
        for line in ticker_lines
        if not line.startswith("#")
    )


@router.get("/get/ticker")
async def get_ticker_content(
    ticker_content_lines: Iterator[str] = Depends(get_ticker_content_lines),
) -> str:
    cfg = await Config.get()
    ticker_content_lines = ["", *ticker_content_lines, ""]
    ticker_content = cfg.ticker_separator.join(ticker_content_lines)

    return markdown(
        ticker_content.strip()
    )


@router.get(
    "/list",
    response_model=list[str],
    responses=_lister.responses,
)
async def list_texts(
    names: Iterator[str] = Depends(_lister),
) -> list[str]:
    return list(names)


@router.get(
    "/find/{prefix}",
    response_model=list[str],
    responses=_finder.responses,
)
async def find_texts(
    names: Iterator[str] = Depends(_finder),
) -> list[str]:
    return list(names)


@router.get(
    "/get/{prefix}",
    response_model=str,
    responses=_unique.responses,
)
async def get_text(
    name: str = Depends(_unique),
) -> str:
    text = await DavFile(f"{_lister.remote_path}/{name}").string

    return markdown(
        text
    )