import json
import logging
import os
import sys

from dotenv import load_dotenv
from flask import Flask, abort, jsonify, redirect, render_template, request, url_for, send_file
import io

if os.path.isdir("/etc/irc-bot"):
    load_dotenv("/etc/irc-bot/.env")
    _LOG_PATH = "/var/log/irc-bot/bot.log"
else:
    load_dotenv()
    _LOG_PATH = _LOG_PATH

app = Flask(__name__, template_folder="templates", static_folder="static")
app.secret_key = os.getenv("PORTAL_SECRET_KEY", "changeme")


@app.template_filter("log_class")
def log_class_filter(line: str) -> str:
    if "IRC IN:" in line:    return "log-irc-in"
    if "IRC OUT:" in line:   return "log-irc-out"
    if "[LLM]" in line:     return "log-llm"
    if "[MEMORY]" in line:   return "log-memory"
    if "[CONFIG]" in line:   return "log-config"
    if "ERROR" in line:      return "log-error"
    return ""

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

from portal import config_manager as cm
from bot import memory as mem

# ── Dashboard ──────────────────────────────────────────────────────────────

@app.route("/")
def index():
    cfg = cm.load_config()
    pid_exists = os.path.exists("data/ircbot.pid")
    sock_exists = os.path.exists("data/ircbot.sock")
    return render_template("index.html", cfg=cfg, pid_exists=pid_exists, sock_exists=sock_exists)


@app.route("/api/status")
def api_status():
    cfg = cm.load_config()
    pid_exists = os.path.exists("data/ircbot.pid")
    return jsonify({
        "bot_running": pid_exists,
        "channels": cfg.get("channels", []),
        "ollama_model": cfg.get("ollama_model"),
        "bot_nick": cfg.get("bot_nick"),
    })


@app.route("/action/reload", methods=["POST"])
def action_reload():
    cm.signal_bot_reload()
    return redirect(url_for("index"))


@app.route("/action/reconnect", methods=["POST"])
def action_reconnect():
    cm.signal_bot_reconnect()
    return redirect(url_for("index"))


@app.route("/action/clear_log", methods=["POST"])
def action_clear_log():
    try:
        open(_LOG_PATH, "w").close()
    except Exception:
        pass
    return redirect(url_for("logs"))


# ── Channels ───────────────────────────────────────────────────────────────

@app.route("/channels")
def channels():
    cfg = cm.load_config()
    return render_template("channels.html", cfg=cfg)


@app.route("/channels/add", methods=["POST"])
def channel_add():
    ch = request.form.get("channel", "").strip()
    if not ch.startswith("#"):
        ch = "#" + ch
    cfg = cm.load_config()
    if ch not in cfg.get("channels", []):
        cfg.setdefault("channels", []).append(ch)
        cm.save_config(cfg)
        cm.signal_bot_reload()
    return redirect(url_for("channels"))


@app.route("/channels/remove", methods=["POST"])
def channel_remove():
    ch = request.form.get("channel", "").strip()
    cfg = cm.load_config()
    channels_list = cfg.get("channels", [])
    if ch in channels_list:
        channels_list.remove(ch)
        cfg["channels"] = channels_list
        cm.save_config(cfg)
        cm.signal_bot_reload()
    return redirect(url_for("channels"))


# ── LLM Settings ───────────────────────────────────────────────────────────

@app.route("/llm", methods=["GET", "POST"])
def llm():
    cfg = cm.load_config()
    errors = []

    if request.method == "POST":
        try:
            cfg["ollama_host"] = request.form["ollama_host"].strip()
            cfg["ollama_port"] = int(request.form["ollama_port"])
            cfg["ollama_model"] = request.form["ollama_model"].strip()
            cfg["system_prompt"] = request.form["system_prompt"]
            cfg["max_response_length"] = int(request.form["max_response_length"])
            cfg["ollama_num_predict"] = int(request.form["ollama_num_predict"])
            cfg["ollama_num_ctx"] = int(request.form["ollama_num_ctx"])
            cfg["response_timeout_seconds"] = int(request.form["response_timeout_seconds"])
            cfg["context_window"] = int(request.form["context_window"])
            cfg["ollama_temperature"] = float(request.form["ollama_temperature"])
            cfg["memory_enabled"] = "memory_enabled" in request.form
            cfg["memory_history_limit"] = int(request.form["memory_history_limit"])
            cfg["memory_max_age_days"] = int(request.form["memory_max_age_days"])
            cm.save_config(cfg)
            cm.signal_bot_reload()
        except (ValueError, KeyError) as e:
            errors.append(str(e))

    return render_template("llm.html", cfg=cfg, errors=errors)


# ── Bot Identity ────────────────────────────────────────────────────────────

@app.route("/bot", methods=["GET", "POST"])
def bot():
    cfg = cm.load_config()
    errors = []

    if request.method == "POST":
        cfg["bot_nick"] = request.form.get("bot_nick", "avcbot").strip()
        bot_realname = request.form.get("bot_realname", "").strip()
        if bot_realname:
            cfg["bot_realname"] = bot_realname
        cfg["trigger_on_nick"] = "trigger_on_nick" in request.form
        prefix = request.form.get("trigger_prefix", "").strip()
        cfg["trigger_prefix"] = prefix if prefix else None
        ignored = request.form.get("ignored_nicks", "")
        cfg["ignored_nicks"] = [n.strip() for n in ignored.split(",") if n.strip()]
        cm.save_config(cfg)
        cm.signal_bot_reload()

    return render_template("bot.html", cfg=cfg, errors=errors)


# ── Logs ────────────────────────────────────────────────────────────────────

@app.route("/logs")
def logs():
    lines = []
    log_path = _LOG_PATH
    if os.path.exists(log_path):
        with open(log_path, "r", encoding="utf-8", errors="replace") as f:
            all_lines = f.readlines()
            lines = all_lines[-200:]
    return render_template("logs.html", lines=lines)


@app.route("/logs/download")
def logs_download():
    log_path = _LOG_PATH
    if not os.path.exists(log_path):
        abort(404)
    return send_file(log_path, as_attachment=True, download_name="bot.log")


@app.route("/api/logs")
def api_logs():
    lines = []
    log_path = _LOG_PATH
    if os.path.exists(log_path):
        with open(log_path, "r", encoding="utf-8", errors="replace") as f:
            lines = f.readlines()[-200:]
    return jsonify({"lines": [l.rstrip() for l in lines]})


# ── Memory ─────────────────────────────────────────────────────────────────

@app.route("/memory")
def memory():
    channels_list = mem.list_channels()
    selected_chan = request.args.get("channel")
    selected_nick = request.args.get("nick")
    nicks = []
    exchanges = []

    if selected_chan:
        nicks = mem.list_nicks(selected_chan)
    if selected_chan and selected_nick:
        exchanges = mem.get_all_exchanges(selected_chan, selected_nick)

    stats = mem.get_stats()
    return render_template(
        "memory.html",
        channels=channels_list,
        selected_chan=selected_chan,
        nicks=nicks,
        selected_nick=selected_nick,
        exchanges=exchanges,
        stats=stats,
    )


@app.route("/memory/clear_user", methods=["POST"])
def memory_clear_user():
    chan = request.form.get("channel_dir", "")
    nick = request.form.get("nick", "")
    if chan and nick:
        mem.delete_user_history("#" + chan, nick)
    return redirect(url_for("memory", channel=chan))


@app.route("/memory/clear_channel", methods=["POST"])
def memory_clear_channel():
    chan = request.form.get("channel_dir", "")
    if chan:
        mem.delete_channel_history("#" + chan)
    return redirect(url_for("memory"))


@app.route("/memory/clear_all", methods=["POST"])
def memory_clear_all():
    confirm = request.form.get("confirm", "")
    if confirm == "yes":
        mem.delete_all_history()
    return redirect(url_for("memory"))


# ── Config editor ───────────────────────────────────────────────────────────

@app.route("/config", methods=["GET", "POST"])
def config_editor():
    error = None
    success = None

    if request.method == "POST":
        raw = request.form.get("config_raw", "")
        try:
            parsed = json.loads(raw)
            cm.save_config(parsed)
            cm.signal_bot_reload()
            success = "Config saved and bot signaled to reload."
        except json.JSONDecodeError as e:
            error = f"Invalid JSON: {e}"
    else:
        parsed = cm.load_config()

    raw_json = json.dumps(cm.load_config(), indent=2)
    return render_template("config.html", raw_json=raw_json, error=error, success=success)


@app.route("/config/download")
def config_download():
    return send_file("config/config.json", as_attachment=True, download_name="config.json")


@app.route("/config/upload", methods=["POST"])
def config_upload():
    f = request.files.get("config_file")
    if not f:
        return redirect(url_for("config_editor"))
    try:
        data = json.loads(f.read().decode())
        cm.save_config(data)
        cm.signal_bot_reload()
    except Exception:
        pass
    return redirect(url_for("config_editor"))


# ── Run ─────────────────────────────────────────────────────────────────────

if __name__ == "__main__":
    port = int(os.getenv("PORTAL_PORT", 8080))
    app.run(host="0.0.0.0", port=port, debug=False)