"""
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)
"""

import re
from logging import getLogger

from fastapi import APIRouter, Depends
from markdown import markdown

from ...core.dav_common import webdav_ensure_files, webdav_ensure_path
from ...core.webdav import WebDAV
from ._common import filter_prefix, filter_prefix_unique, get_remote_path, list_files

_logger = getLogger(__name__)
_PATH_NAME = "text_dir"

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

_rp = get_remote_path(path_name=_PATH_NAME)
_ls = list_files(
    rp=_rp,
    re=re.compile(
        r"\.(txt|md)$",
        flags=re.IGNORECASE,
    ),
)

_fp = filter_prefix(_ls)
_fpu = filter_prefix_unique(_fp)


@router.on_event("startup")
async def start_router() -> None:
    _logger.debug(f"{router.prefix} router starting.")

    remote_path = await _rp()
    if not webdav_ensure_path(remote_path):
        webdav_ensure_files(
            remote_path,
            "message.txt",
            "title.txt",
            "ticker.txt",
        )


@router.get(
    "/list",
    responses=_ls.responses,
)
async def list_all_texts(
    names: list[str] = Depends(_ls.func),
) -> list[str]:
    return names


@router.get(
    "/find/{prefix}",
    responses=_fp.responses,
)
async def find_texts_by_prefix(
    names: list[str] = Depends(_fp.func),
) -> list[str]:
    return names


async def _get_raw_text_by_prefix(
    remote_path: str = Depends(_rp),
    name: str = Depends(_fpu.func),
) -> str:
    return await WebDAV.read_str(f"{remote_path}/{name}")


@router.get(
    "/get/raw/{prefix}",
    responses=_fpu.responses,
)
async def get_raw_text_by_prefix(
    text: str = Depends(_get_raw_text_by_prefix),
) -> str:
    return text


@router.get(
    "/get/html/{prefix}",
    responses=_fpu.responses,
)
async def get_html_by_prefix(
    text: str = Depends(_get_raw_text_by_prefix),
) -> str:
    return markdown(text)