"""Profile picture routes: change, crop, album, role color."""

import os
from typing import List
from fastapi import APIRouter, UploadFile, File, Form
from fastapi.responses import FileResponse
import globals
from routes.models import (
    ManualCropRequest, DescriptionUpdateRequest,
    AlbumCropRequest, AlbumDescriptionRequest, BulkDeleteRequest,
)
from utils.logger import get_logger

logger = get_logger('api')

router = APIRouter()


# ========== Profile Picture — Core ==========

@router.post("/profile-picture/change")
async def trigger_profile_picture_change(
    guild_id: int = None,
    file: UploadFile = File(None)
):
    """Change Miku's profile picture. If a file is provided, use it. Otherwise, search Danbooru."""
    if not globals.client or not globals.client.loop or not globals.client.loop.is_running():
        return {"status": "error", "message": "Bot not ready"}

    try:
        from utils.profile_picture_manager import profile_picture_manager
        from server_manager import server_manager

        mood = None
        if guild_id is not None:
            mood, _ = server_manager.get_server_mood(guild_id)
        else:
            mood = globals.DM_MOOD

        custom_image_bytes = None
        if file:
            custom_image_bytes = await file.read()
            logger.info(f"Received custom image upload ({len(custom_image_bytes)} bytes)")

        result = await profile_picture_manager.change_profile_picture(
            mood=mood, custom_image_bytes=custom_image_bytes, debug=True
        )

        if result["success"]:
            return {
                "status": "ok",
                "message": "Profile picture changed successfully",
                "source": result["source"],
                "metadata": result.get("metadata", {})
            }
        else:
            return {
                "status": "error",
                "message": result.get("error", "Unknown error"),
                "source": result["source"]
            }

    except Exception as e:
        logger.error(f"Error in profile picture API: {e}")
        import traceback
        traceback.print_exc()
        return {"status": "error", "message": f"Unexpected error: {str(e)}"}


@router.get("/profile-picture/metadata")
async def get_profile_picture_metadata():
    """Get metadata about the current profile picture"""
    try:
        from utils.profile_picture_manager import profile_picture_manager
        metadata = profile_picture_manager.load_metadata()
        if metadata:
            return {"status": "ok", "metadata": metadata}
        else:
            return {"status": "ok", "metadata": None, "message": "No metadata found"}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.post("/profile-picture/restore-fallback")
async def restore_fallback_profile_picture():
    """Restore the original fallback profile picture"""
    if not globals.client or not globals.client.loop or not globals.client.loop.is_running():
        return {"status": "error", "message": "Bot not ready"}

    try:
        from utils.profile_picture_manager import profile_picture_manager
        success = await profile_picture_manager.restore_fallback()
        if success:
            return {"status": "ok", "message": "Fallback profile picture restored"}
        else:
            return {"status": "error", "message": "Failed to restore fallback"}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.post("/role-color/custom")
async def set_custom_role_color(hex_color: str = Form(...)):
    """Set a custom role color across all servers"""
    if not globals.client or not globals.client.loop or not globals.client.loop.is_running():
        return {"status": "error", "message": "Bot not ready"}

    try:
        from utils.profile_picture_manager import profile_picture_manager
        result = await profile_picture_manager.set_custom_role_color(hex_color, debug=True)
        if result["success"]:
            return {
                "status": "ok",
                "message": f"Role color updated to {result['color']['hex']}",
                "color": result["color"]
            }
        else:
            return {"status": "error", "message": result.get("error", "Unknown error")}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.post("/role-color/reset-fallback")
async def reset_role_color_to_fallback():
    """Reset role color to fallback (#86cecb)"""
    if not globals.client or not globals.client.loop or not globals.client.loop.is_running():
        return {"status": "error", "message": "Bot not ready"}

    try:
        from utils.profile_picture_manager import profile_picture_manager
        result = await profile_picture_manager.reset_to_fallback_color(debug=True)
        if result["success"]:
            return {
                "status": "ok",
                "message": f"Role color reset to fallback {result['color']['hex']}",
                "color": result["color"]
            }
        else:
            return {"status": "error", "message": "Failed to reset color"}
    except Exception as e:
        return {"status": "error", "message": str(e)}


# ========== Profile Picture — Image Serving ==========

@router.get("/profile-picture/image/original")
async def serve_original_profile_picture():
    """Serve the full-resolution original profile picture"""
    from utils.profile_picture_manager import profile_picture_manager
    path = profile_picture_manager.ORIGINAL_PATH
    if not os.path.exists(path):
        return {"status": "error", "message": "No original image found"}
    return FileResponse(path, media_type="image/png", headers={"Cache-Control": "no-cache"})


@router.get("/profile-picture/image/current")
async def serve_current_profile_picture():
    """Serve the current cropped profile picture"""
    from utils.profile_picture_manager import profile_picture_manager
    path = profile_picture_manager.CURRENT_PATH
    if not os.path.exists(path):
        return {"status": "error", "message": "No current image found"}
    return FileResponse(path, media_type="image/png", headers={"Cache-Control": "no-cache"})


# ========== Profile Picture — Manual Crop Workflow ==========

@router.post("/profile-picture/change-no-crop")
async def trigger_profile_picture_change_no_crop(
    guild_id: int = None,
    file: UploadFile = File(None)
):
    """Change Miku's profile picture but skip auto-cropping."""
    if not globals.client or not globals.client.loop or not globals.client.loop.is_running():
        return {"status": "error", "message": "Bot not ready"}

    try:
        from utils.profile_picture_manager import profile_picture_manager
        from server_manager import server_manager

        mood = None
        if guild_id is not None:
            mood, _ = server_manager.get_server_mood(guild_id)
        else:
            mood = globals.DM_MOOD

        custom_image_bytes = None
        if file:
            custom_image_bytes = await file.read()
            logger.info(f"Received custom image for manual crop ({len(custom_image_bytes)} bytes)")

        result = await profile_picture_manager.change_profile_picture(
            mood=mood, custom_image_bytes=custom_image_bytes, debug=True, skip_crop=True
        )

        if result["success"]:
            return {
                "status": "ok",
                "message": "Image saved for manual cropping",
                "source": result["source"],
                "metadata": result.get("metadata", {})
            }
        else:
            return {
                "status": "error",
                "message": result.get("error", "Unknown error"),
                "source": result.get("source")
            }
    except Exception as e:
        logger.error(f"Error in change-no-crop API: {e}")
        import traceback
        traceback.print_exc()
        return {"status": "error", "message": f"Unexpected error: {str(e)}"}


@router.post("/profile-picture/manual-crop")
async def apply_manual_crop(req: ManualCropRequest):
    """Apply a manual crop to the stored original image"""
    if not globals.client or not globals.client.loop or not globals.client.loop.is_running():
        return {"status": "error", "message": "Bot not ready"}

    try:
        from utils.profile_picture_manager import profile_picture_manager
        result = await profile_picture_manager.manual_crop(
            x=req.x, y=req.y, width=req.width, height=req.height, debug=True
        )
        if result["success"]:
            return {
                "status": "ok",
                "message": "Manual crop applied successfully",
                "metadata": result.get("metadata", {})
            }
        else:
            return {"status": "error", "message": result.get("error", "Unknown error")}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.post("/profile-picture/auto-crop")
async def apply_auto_crop():
    """Run intelligent auto-crop on the stored original image"""
    if not globals.client or not globals.client.loop or not globals.client.loop.is_running():
        return {"status": "error", "message": "Bot not ready"}

    try:
        from utils.profile_picture_manager import profile_picture_manager
        result = await profile_picture_manager.auto_crop_only(debug=True)
        if result["success"]:
            return {
                "status": "ok",
                "message": "Auto-crop applied successfully",
                "metadata": result.get("metadata", {})
            }
        else:
            return {"status": "error", "message": result.get("error", "Unknown error")}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.post("/profile-picture/description")
async def update_profile_picture_description(req: DescriptionUpdateRequest):
    """Update the profile picture description"""
    try:
        from utils.profile_picture_manager import profile_picture_manager
        result = await profile_picture_manager.update_description(
            description=req.description, reinject_cat=True, debug=True
        )
        if result["success"]:
            return {"status": "ok", "message": "Description updated successfully"}
        else:
            return {"status": "error", "message": result.get("error", "Unknown error")}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.post("/profile-picture/regenerate-description")
async def regenerate_profile_picture_description():
    """Re-generate the profile picture description using the vision model"""
    try:
        from utils.profile_picture_manager import profile_picture_manager
        result = await profile_picture_manager.regenerate_description(debug=True)
        if result["success"]:
            return {
                "status": "ok",
                "message": "Description regenerated successfully",
                "description": result["description"]
            }
        else:
            return {"status": "error", "message": result.get("error", "Unknown error")}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.get("/profile-picture/description")
async def get_profile_picture_description():
    """Get the current profile picture description text"""
    try:
        from utils.profile_picture_manager import profile_picture_manager
        description = profile_picture_manager.get_current_description()
        return {"status": "ok", "description": description or ""}
    except Exception as e:
        return {"status": "error", "message": str(e)}


# ========== Profile Picture — Album / Gallery ==========

@router.get("/profile-picture/album")
async def list_album_entries():
    """List all album entries (newest first)"""
    try:
        from utils.profile_picture_manager import profile_picture_manager
        entries = profile_picture_manager.get_album_entries()
        return {"status": "ok", "entries": entries, "count": len(entries)}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.get("/profile-picture/album/disk-usage")
async def get_album_disk_usage():
    """Get album disk usage statistics"""
    try:
        from utils.profile_picture_manager import profile_picture_manager
        usage = profile_picture_manager.get_album_disk_usage()
        return {"status": "ok", **usage}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.get("/profile-picture/album/{entry_id}")
async def get_album_entry(entry_id: str):
    """Get metadata for a single album entry"""
    try:
        from utils.profile_picture_manager import profile_picture_manager
        meta = profile_picture_manager.get_album_entry(entry_id)
        if meta:
            return {"status": "ok", "entry": meta}
        else:
            return {"status": "error", "message": "Album entry not found"}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.get("/profile-picture/album/{entry_id}/image/{image_type}")
async def serve_album_image(entry_id: str, image_type: str):
    """Serve an album entry's image (original or cropped)"""
    if image_type not in ("original", "cropped"):
        return {"status": "error", "message": "image_type must be 'original' or 'cropped'"}
    try:
        from utils.profile_picture_manager import profile_picture_manager
        path = profile_picture_manager.get_album_image_path(entry_id, image_type)
        if path:
            return FileResponse(path, media_type="image/png", headers={"Cache-Control": "no-cache"})
        else:
            return {"status": "error", "message": f"No {image_type} image for this entry"}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.post("/profile-picture/album/add")
async def add_to_album(file: UploadFile = File(...)):
    """Add a single image to the album"""
    try:
        from utils.profile_picture_manager import profile_picture_manager
        image_bytes = await file.read()
        logger.info(f"Adding image to album ({len(image_bytes)} bytes)")
        result = await profile_picture_manager.add_to_album(
            image_bytes=image_bytes, source="custom_upload", debug=True
        )
        if result["success"]:
            return {
                "status": "ok",
                "message": "Image added to album",
                "entry_id": result["entry_id"],
                "metadata": result.get("metadata", {})
            }
        else:
            return {"status": "error", "message": result.get("error", "Unknown error")}
    except Exception as e:
        logger.error(f"Error adding to album: {e}")
        return {"status": "error", "message": str(e)}


@router.post("/profile-picture/album/add-batch")
async def add_batch_to_album(files: List[UploadFile] = File(...)):
    """Batch-add multiple images to the album efficiently"""
    try:
        from utils.profile_picture_manager import profile_picture_manager
        images = []
        for f in files:
            data = await f.read()
            images.append({"bytes": data, "source": "custom_upload"})
        logger.info(f"Batch adding {len(images)} images to album")
        result = await profile_picture_manager.add_batch_to_album(images=images, debug=True)
        return {
            "status": "ok" if result["success"] else "partial",
            "message": f"Added {result['succeeded']}/{result['total']} images",
            "succeeded": result["succeeded"],
            "failed": result["failed"],
            "total": result["total"],
            "results": [
                {"entry_id": r.get("entry_id"), "success": r["success"], "error": r.get("error")}
                for r in result["results"]
            ]
        }
    except Exception as e:
        logger.error(f"Error in batch album add: {e}")
        return {"status": "error", "message": str(e)}


@router.post("/profile-picture/album/{entry_id}/set-current")
async def set_album_entry_as_current(entry_id: str):
    """Set an album entry as the current Discord profile picture"""
    if not globals.client or not globals.client.loop or not globals.client.loop.is_running():
        return {"status": "error", "message": "Bot not ready"}
    try:
        from utils.profile_picture_manager import profile_picture_manager
        result = await profile_picture_manager.set_album_entry_as_current(
            entry_id=entry_id, archive_current=True, debug=True
        )
        if result["success"]:
            return {
                "status": "ok",
                "message": "Album entry set as current profile picture",
                "archived_entry_id": result.get("archived_entry_id")
            }
        else:
            return {"status": "error", "message": result.get("error", "Unknown error")}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.post("/profile-picture/album/{entry_id}/manual-crop")
async def manual_crop_album_entry(entry_id: str, req: AlbumCropRequest):
    """Manually crop an album entry's original image"""
    try:
        from utils.profile_picture_manager import profile_picture_manager
        result = await profile_picture_manager.manual_crop_album_entry(
            entry_id=entry_id, x=req.x, y=req.y,
            width=req.width, height=req.height, debug=True
        )
        if result["success"]:
            return {
                "status": "ok",
                "message": "Album entry cropped",
                "metadata": result.get("metadata", {})
            }
        else:
            return {"status": "error", "message": result.get("error", "Unknown error")}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.post("/profile-picture/album/{entry_id}/auto-crop")
async def auto_crop_album_entry(entry_id: str):
    """Auto-crop an album entry using face/saliency detection"""
    try:
        from utils.profile_picture_manager import profile_picture_manager
        result = await profile_picture_manager.auto_crop_album_entry(
            entry_id=entry_id, debug=True
        )
        if result["success"]:
            return {
                "status": "ok",
                "message": "Album entry auto-cropped",
                "metadata": result.get("metadata", {})
            }
        else:
            return {"status": "error", "message": result.get("error", "Unknown error")}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.post("/profile-picture/album/{entry_id}/description")
async def update_album_entry_description(entry_id: str, req: AlbumDescriptionRequest):
    """Update an album entry's description"""
    try:
        from utils.profile_picture_manager import profile_picture_manager
        result = await profile_picture_manager.update_album_entry_description(
            entry_id=entry_id, description=req.description, debug=True
        )
        if result["success"]:
            return {"status": "ok", "message": "Description updated"}
        else:
            return {"status": "error", "message": result.get("error", "Unknown error")}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.delete("/profile-picture/album/{entry_id}")
async def delete_album_entry(entry_id: str):
    """Delete a single album entry"""
    try:
        from utils.profile_picture_manager import profile_picture_manager
        if profile_picture_manager.delete_album_entry(entry_id):
            return {"status": "ok", "message": "Album entry deleted"}
        else:
            return {"status": "error", "message": "Album entry not found"}
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.post("/profile-picture/album/delete-bulk")
async def bulk_delete_album_entries(req: BulkDeleteRequest):
    """Bulk delete multiple album entries"""
    try:
        from utils.profile_picture_manager import profile_picture_manager
        result = profile_picture_manager.delete_album_entries(req.entry_ids)
        return {
            "status": "ok",
            "message": f"Deleted {result['deleted']}/{result['total']} entries",
            **result
        }
    except Exception as e:
        return {"status": "error", "message": str(e)}


@router.post("/profile-picture/album/add-current")
async def add_current_to_album():
    """Archive the current profile picture into the album"""
    try:
        from utils.profile_picture_manager import profile_picture_manager
        entry_id = await profile_picture_manager._save_current_to_album(debug=True)
        if entry_id:
            return {"status": "ok", "message": "Current PFP archived to album", "entry_id": entry_id}
        else:
            return {"status": "error", "message": "No current PFP to archive"}
    except Exception as e:
        return {"status": "error", "message": str(e)}