# services/torn_api.py
import aiohttp
import asyncio
import config
from .ffscouter import fetch_batch_stats
from .server_state import STATE


# Tasks
friendly_status_task = None
enemy_status_task = None

# Locks for safe async updates
friendly_lock = asyncio.Lock()
enemy_lock = asyncio.Lock()


# Populate faction (memory only)
async def populate_faction(faction_id: int, kind: str):

    #Fetch members + FFScouter estimates once and store in STATE.
    #kind: "friendly" or "enemy"

    url = f"https://api.torn.com/v2/faction/{faction_id}?selections=members&key={config.TORN_API_KEY}"

    try:
        async with aiohttp.ClientSession() as session:
            async with session.get(url) as resp:
                if resp.status != 200:
                    error_text = await resp.text()
                    print(f"[ERROR] Torn API returned {resp.status} for {kind} faction {faction_id}")
                    print(f"[ERROR] Response: {error_text[:200]}")
                    return False
                data = await resp.json()

        # Check for API error response
        if "error" in data:
            print(f"[ERROR] Torn API error for {kind} faction {faction_id}: {data['error']}")
            return False

        members_list = data.get("members", [])
        if not members_list:
            print(f"[ERROR] No members found in {kind} faction {faction_id}")
            return False

        member_ids = [m.get("id") for m in members_list if "id" in m]
        if not member_ids:
            print(f"[ERROR] No valid member IDs in {kind} faction {faction_id}")
            return False

        print(f"[INFO] Fetching FFScouter data for {len(member_ids)} members from {kind} faction {faction_id}")
        # Fetch FFScouter estimates
        ff_data = await fetch_batch_stats(member_ids)

        received_ids = []
        async with (friendly_lock if kind == "friendly" else enemy_lock):
            for m in members_list:
                pid = m["id"]
                est = ff_data.get(str(pid), {}).get("bs_estimate_human", "?")
                status = m.get("status", {}).get("state", "Unknown")
                member_data = {
                    "id": pid,
                    "name": m.get("name", "Unknown"),
                    "level": m.get("level", 0),
                    "estimate": est,
                    "status": status
                }
                await STATE.upsert_member(member_data, kind)
                received_ids.append(pid)

            # Remove missing members from STATE
            await STATE.remove_missing_members(received_ids, kind)

        print(f"[SUCCESS] Populated {len(received_ids)} {kind} members from faction {faction_id}")
        return True

    except Exception as e:
        print(f"[ERROR] Exception in populate_faction for {kind} faction {faction_id}: {type(e).__name__}: {str(e)}")
        import traceback
        traceback.print_exc()
        return False


# Status refresh loop
async def refresh_status_loop(faction_id: int, kind: str, lock: asyncio.Lock, interval: int):
    #Periodically refresh member statuses in STATE.
    while True:
        try:
            url = f"https://api.torn.com/v2/faction/{faction_id}?selections=members&key={config.TORN_API_KEY}"
            async with aiohttp.ClientSession() as session:
                async with session.get(url) as resp:
                    if resp.status != 200:
                        print(f"Status fetch error {resp.status}")
                        await asyncio.sleep(interval)
                        continue
                    data = await resp.json()

            members_list = data.get("members", [])
            async with lock:
                coll = STATE.friendly if kind == "friendly" else STATE.enemy
                for m in members_list:
                    mid = m.get("id")
                    if mid in coll:
                        coll[mid].status = m.get("status", {}).get("state", "Unknown")

        except Exception as e:
            print(f"Error in status loop for {kind} faction {faction_id}: {e}")

        await asyncio.sleep(interval)


# Public API helpers
async def populate_friendly(faction_id: int):
    # Store friendly faction ID for chain monitoring
    STATE.friendly_faction_id = faction_id
    return await populate_faction(faction_id, "friendly")

async def populate_enemy(faction_id: int):
    # Store enemy faction ID
    STATE.enemy_faction_id = faction_id
    return await populate_faction(faction_id, "enemy")

async def start_friendly_status_loop(faction_id: int, interval: int):
    global friendly_status_task
    if friendly_status_task and not friendly_status_task.done():
        friendly_status_task.cancel()
    friendly_status_task = asyncio.create_task(
        refresh_status_loop(faction_id, "friendly", friendly_lock, interval)
    )
    # Save state
    STATE.friendly_status_interval = interval
    STATE.friendly_status_running = True

async def start_enemy_status_loop(faction_id: int, interval: int):
    global enemy_status_task
    if enemy_status_task and not enemy_status_task.done():
        enemy_status_task.cancel()
    enemy_status_task = asyncio.create_task(
        refresh_status_loop(faction_id, "enemy", enemy_lock, interval)
    )
    # Save state
    STATE.enemy_status_interval = interval
    STATE.enemy_status_running = True

async def stop_friendly_status_loop():
    global friendly_status_task
    if friendly_status_task and not friendly_status_task.done():
        friendly_status_task.cancel()
        try:
            await friendly_status_task
        except asyncio.CancelledError:
            pass
    STATE.friendly_status_running = False

async def stop_enemy_status_loop():
    global enemy_status_task
    if enemy_status_task and not enemy_status_task.done():
        enemy_status_task.cancel()
        try:
            await enemy_status_task
        except asyncio.CancelledError:
            pass
    STATE.enemy_status_running = False