"""Log viewing API blueprint.

Serves log content to the /logs page via HTMX endpoints through vacuum-walld.
"""

import logging

from flask import Blueprint, render_template_string

from daemon.client import get

logger = logging.getLogger(__name__)
bp = Blueprint("logs", __name__)

_LOG_LINE_TEMPLATE = """\
{% for line in lines %}
<div class="log-line{% if 'ERROR' in line %} log-error{% elif 'WARN' in line %} log-warn{% endif %}">{{ line | e }}</div>
{% endfor %}"""


def _render_log_lines(text: str) -> str:
    lines = text.rstrip("\n").split("\n") if text.strip() else []
    return render_template_string(_LOG_LINE_TEMPLATE, lines=lines)


@bp.route("/journal")
def journal():
    try:
        text = get("/logs/journal")
        return _render_log_lines(text)
    except RuntimeError:
        return _render_log_lines("(error reading journal)\n")


@bp.route("/nginx/access")
def nginx_access():
    try:
        text = get("/logs/nginx/access")
        return _render_log_lines(text)
    except RuntimeError:
        return _render_log_lines("(log file not found)\n")


@bp.route("/nginx/error")
def nginx_error():
    try:
        text = get("/logs/nginx/error")
        return _render_log_lines(text)
    except RuntimeError:
        return _render_log_lines("(log file not found)\n")


@bp.route("/dnsmasq")
def dnsmasq():
    try:
        text = get("/logs/dnsmasq")
        return _render_log_lines(text)
    except RuntimeError:
        return _render_log_lines("(error reading journal)\n")


@bp.route("/app")
def app_log():
    try:
        text = get("/logs/app")
        return _render_log_lines(text)
    except RuntimeError:
        return _render_log_lines("(log file not found)\n")