"""
Router "text" provides:

- listing text files
- finding text files by name prefix
- getting text file raw content by name prefix
- getting text file HTML content by name prefix (using Markdown)
- getting the "ticker" raw content
- getting the "ticker" HTML content (using Markdown)
"""

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"])

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

text_finder = PrefixFinder(text_lister)
text_unique = PrefixUnique(text_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]:
    cfg = await Config.get()

    return (
        line
        for line in ticker_lines
        if not line.startswith(cfg.ticker.comment_marker)
    )


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 ticker_content.strip()


@ router.get("/get/html/ticker")
async def get_ticker(
    ticker_content: str = Depends(get_ticker_content),
) -> str:
    return markdown(ticker_content)


@ router.get("/get/raw/ticker")
async def get_raw_ticker(
    ticker_content: str = Depends(get_ticker_content),
) -> str:
    return ticker_content


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


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


async def get_text_content(
    name: str = Depends(text_unique),
) -> str:
    return await DavFile(f"{text_lister.remote_path}/{name}").string


@router.get(
    "/get/html/{prefix}",
    response_model=str,
    responses=text_unique.responses,
)
async def get_text(
    text: str = Depends(get_text_content),
) -> str:
    return markdown(text)


@router.get(
    "/get/raw/{prefix}",
    response_model=str,
    responses=text_unique.responses,
)
async def get_raw_text(
    text: str = Depends(get_text_content),
) -> str:
    return text