# app/api/v1/vendor/media.py
"""
Vendor media and file management endpoints.

Vendor Context: Uses token_vendor_id from JWT token (authenticated vendor API pattern).
The get_current_vendor_api dependency guarantees token_vendor_id is present.
"""

import logging

from fastapi import APIRouter, Depends, File, Query, UploadFile
from sqlalchemy.orm import Session

from app.api.deps import get_current_vendor_api
from app.core.database import get_db
from app.services.vendor_service import vendor_service
from models.database.user import User
from models.schema.media import (
    MediaDetailResponse,
    MediaListResponse,
    MediaMetadataUpdate,
    MediaUploadResponse,
    MediaUsageResponse,
    MultipleUploadResponse,
    OptimizationResultResponse,
)

router = APIRouter(prefix="/media")
logger = logging.getLogger(__name__)


@router.get("", response_model=MediaListResponse)
def get_media_library(
    skip: int = Query(0, ge=0),
    limit: int = Query(100, ge=1, le=1000),
    media_type: str | None = Query(None, description="image, video, document"),
    search: str | None = Query(None),
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Get vendor media library.

    TODO: Implement in Slice 3
    - Get all media files for vendor
    - Filter by type (image, video, document)
    - Search by filename
    - Support pagination
    - Return file URLs, sizes, metadata
    """
    vendor = vendor_service.get_vendor_by_id(db, current_user.token_vendor_id)  # noqa: F841
    return MediaListResponse(
        media=[],
        total=0,
        skip=skip,
        limit=limit,
        message="Media library coming in Slice 3",
    )


@router.post("/upload", response_model=MediaUploadResponse)
async def upload_media(
    file: UploadFile = File(...),
    folder: str | None = Query(None, description="products, general, etc."),
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Upload media file.

    TODO: Implement in Slice 3
    - Accept file upload
    - Validate file type and size
    - Store file (local or cloud storage)
    - Generate thumbnails for images
    - Save metadata to database
    - Return file URL
    """
    vendor = vendor_service.get_vendor_by_id(db, current_user.token_vendor_id)  # noqa: F841
    return MediaUploadResponse(
        file_url=None,
        thumbnail_url=None,
        message="Media upload coming in Slice 3",
    )


@router.post("/upload/multiple", response_model=MultipleUploadResponse)
async def upload_multiple_media(
    files: list[UploadFile] = File(...),
    folder: str | None = Query(None),
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Upload multiple media files at once.

    TODO: Implement in Slice 3
    - Accept multiple files
    - Process each file
    - Return list of uploaded file URLs
    - Handle errors gracefully
    """
    vendor = vendor_service.get_vendor_by_id(db, current_user.token_vendor_id)  # noqa: F841
    return MultipleUploadResponse(
        uploaded_files=[],
        failed_files=[],
        message="Multiple upload coming in Slice 3",
    )


@router.get("/{media_id}", response_model=MediaDetailResponse)
def get_media_details(
    media_id: int,
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Get media file details.

    TODO: Implement in Slice 3
    - Get file metadata
    - Return file URL
    - Return usage information (which products use this file)
    """
    vendor = vendor_service.get_vendor_by_id(db, current_user.token_vendor_id)  # noqa: F841
    return MediaDetailResponse(message="Media details coming in Slice 3")


@router.put("/{media_id}", response_model=MediaDetailResponse)
def update_media_metadata(
    media_id: int,
    metadata: MediaMetadataUpdate,
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Update media file metadata.

    TODO: Implement in Slice 3
    - Update filename
    - Update alt text
    - Update tags/categories
    - Update description
    """
    vendor = vendor_service.get_vendor_by_id(db, current_user.token_vendor_id)  # noqa: F841
    return MediaDetailResponse(message="Media update coming in Slice 3")


@router.delete("/{media_id}", response_model=MediaDetailResponse)
def delete_media(
    media_id: int,
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Delete media file.

    TODO: Implement in Slice 3
    - Verify file belongs to vendor
    - Check if file is in use by products
    - Delete file from storage
    - Delete database record
    - Return success/error
    """
    vendor = vendor_service.get_vendor_by_id(db, current_user.token_vendor_id)  # noqa: F841
    return MediaDetailResponse(message="Media deletion coming in Slice 3")


@router.get("/{media_id}/usage", response_model=MediaUsageResponse)
def get_media_usage(
    media_id: int,
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Get where this media file is being used.

    TODO: Implement in Slice 3
    - Check products using this media
    - Check other entities using this media
    - Return list of usage
    """
    vendor = vendor_service.get_vendor_by_id(db, current_user.token_vendor_id)  # noqa: F841
    return MediaUsageResponse(
        products=[],
        other_usage=[],
        message="Media usage tracking coming in Slice 3",
    )


@router.post("/optimize/{media_id}", response_model=OptimizationResultResponse)
def optimize_media(
    media_id: int,
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Optimize media file (compress, resize, etc.).

    TODO: Implement in Slice 3
    - Optimize image (compress, resize)
    - Generate multiple sizes
    - Keep original
    - Update database with new versions
    """
    vendor = vendor_service.get_vendor_by_id(db, current_user.token_vendor_id)  # noqa: F841
    return OptimizationResultResponse(message="Media optimization coming in Slice 3")