# context.py

import os
import yaml
import discord

base_dir = os.path.dirname(__file__)
with open(os.path.join(base_dir, "settings.yml"), "r", encoding="utf-8") as f:
    settings = yaml.safe_load(f)

# Determine whether context should be included. Preference order:
# 1) `AI_INCLUDE_CONTEXT` environment variable if present
# 2) `settings.yml` -> context.enabled
env_val = os.getenv("AI_INCLUDE_CONTEXT", None)
if env_val is not None:
    AI_INCLUDE_CONTEXT = str(env_val).lower() == "true"
else:
    AI_INCLUDE_CONTEXT = settings.get("context", {}).get("enabled", True)

CONTEXT_LIMIT = settings.get("context", {}).get("max_messages", 15) if AI_INCLUDE_CONTEXT else 0

# Returns full discord.Message objects (for logic)
async def fetch_raw_context(channel, limit=CONTEXT_LIMIT):
    # If context injection is disabled or limit is <= 0, return early.
    if not AI_INCLUDE_CONTEXT or (not isinstance(limit, int)) or limit <= 0:
        return []

    messages = []
    async for message in channel.history(limit=100):
        # Skip other bots (but not Delta herself)
        if message.author.bot and message.author.id != channel.guild.me.id:
            continue
        messages.append(message)
        if len(messages) >= limit:
            break
    messages.reverse()
    return messages

# Keeps your clean format logic for LLM
def format_context(messages: list[discord.Message]) -> str:
    lines = []
    for message in messages:
        raw = message.clean_content
        clean = raw.strip().replace("\n", " ").replace("\r", "")
        clean = " ".join(clean.split())
        if not clean or clean.startswith("!"):
            continue
        line = f"{message.created_at.strftime('%Y-%m-%d %H:%M')} - {message.author.display_name}: {clean}"
        lines.append(line)
    return "\n".join(lines)