"""Configuration routes — form-based config pages.

Merged from Java's 19 separate config pages into grouped sections.

Ported from net.i2p.router.web.helpers.Config*Helper / Config*Handler.
"""

from __future__ import annotations

from flask import Blueprint, render_template, request, redirect, url_for, current_app

bp = Blueprint("config", __name__, url_prefix="/config")

_SECTIONS = {"network", "security", "ui", "tunnels", "clients", "logging", "updates", "advanced"}


@bp.route("/")
def config_index():
    """Configuration overview — links to all sections."""
    return render_template("config/index.html", sections=sorted(_SECTIONS))


@bp.route("/<section>", methods=["GET"])
def config_section(section: str):
    """Render a config section page."""
    if section not in _SECTIONS:
        return render_template("404.html"), 404
    ctx = current_app.config["CONSOLE_CONTEXT"]
    return render_template(
        f"config/{section}.html",
        section=section,
        properties=ctx.get_all_properties(),
    )


@bp.route("/<section>", methods=["POST"])
def config_save(section: str):
    """Save configuration changes from a form POST."""
    if section not in _SECTIONS:
        return render_template("404.html"), 404
    ctx = current_app.config["CONSOLE_CONTEXT"]
    for key, value in request.form.items():
        ctx.set_property(key, value)
    return redirect(url_for("config.config_section", section=section))