radionica3d/backend/routers/orders.py

import db
import schemas
import auth_utils
import notifications
import config
from typing import List, Optional
import json
import os
import uuid
import shutil
import hashlib
import preview_utils
import slicer_utils
from fastapi import APIRouter, Request, Form, Depends, HTTPException, BackgroundTasks, UploadFile, File
from services import pricing, order_processing, event_hooks

router = APIRouter(prefix="/orders", tags=["orders"])



@router.post("")
async def create_order(
    request: Request,
    background_tasks: BackgroundTasks,
    first_name: str = Form(...),
    last_name: str = Form(...),
    phone: str = Form(...),
    email: str = Form(...),
    shipping_address: str = Form(...),
    model_link: Optional[str] = Form(None),
    allow_portfolio: bool = Form(False),
    notes: Optional[str] = Form(None),
    material_id: int = Form(...),
    file_ids: str = Form("[]"),
    file_quantities: str = Form("[]"),
    quantity: int = Form(1),
    color_name: Optional[str] = Form(None),
    token: str = Depends(auth_utils.oauth2_scheme_optional)
):
    user_id = None
    if token:
        payload = auth_utils.decode_token(token)
        if payload:
            user_id = payload.get("id")

    parsed_ids = []
    parsed_quantities = []
    if file_ids:
        try:
            parsed_ids = json.loads(file_ids)
            parsed_quantities = json.loads(file_quantities)
        except:
            pass

    lang = request.query_params.get("lang", "en")
    name_col = f"name_{lang}" if lang in ["en", "ru", "me"] else "name_en"
    
    mat_info = db.execute_query(f"SELECT {name_col}, price_per_cm3 FROM materials WHERE id = %s", (material_id,))
    mat_name = mat_info[0][name_col] if mat_info else "Unknown"
    mat_price = mat_info[0]['price_per_cm3'] if mat_info else 0.0

    file_sizes = []
    if parsed_ids:
        format_strings = ','.join(['%s'] * len(parsed_ids))
        file_rows = db.execute_query(f"SELECT file_size FROM order_files WHERE id IN ({format_strings})", tuple(parsed_ids))
        file_sizes = [r['file_size'] for r in file_rows]

    estimated_price = pricing.calculate_estimated_price(material_id, file_sizes, parsed_quantities if parsed_quantities else None)

    # Snapshoting initial parameters
    original_params = json.dumps({
        "material_name": mat_name,
        "material_price": float(mat_price) if mat_price is not None else 0.0,
        "estimated_price": float(estimated_price) if estimated_price is not None else 0.0,
        "quantity": quantity,
        "color_name": color_name,
        "notes": notes,
        "first_name": first_name,
        "last_name": last_name,
        "phone": phone,
        "email": email,
        "shipping_address": shipping_address,
        "model_link": model_link
    })

    order_query = """
    INSERT INTO orders (user_id, material_id, first_name, last_name, phone, email, shipping_address, model_link, status, allow_portfolio, estimated_price, material_name, material_price, color_name, quantity, notes, original_params)
    VALUES (%s, %s, %s, %s, %s, %s, %s, %s, 'pending', %s, %s, %s, %s, %s, %s, %s, %s)
    """
    order_params = (user_id, material_id, first_name, last_name, phone, email, shipping_address, model_link, allow_portfolio, estimated_price, mat_name, mat_price, color_name, quantity, notes, original_params)
    
    try:
        order_insert_id = db.execute_commit(order_query, order_params)
        if parsed_ids:
            for idx, f_id in enumerate(parsed_ids):
                qty = parsed_quantities[idx] if idx < len(parsed_quantities) else 1
                db.execute_commit("UPDATE order_files SET order_id = %s, quantity = %s WHERE id = %s", (order_insert_id, qty, f_id))
        background_tasks.add_task(order_processing.process_order_slicing, order_insert_id)
        background_tasks.add_task(event_hooks.on_order_created, order_insert_id)
        return {"status": "success", "order_id": order_insert_id, "message": "Order submitted successfully"}
    except Exception as e:
        print(f"Error creating order: {e}")
        raise HTTPException(status_code=500, detail="Internal server error occurred while processing order")

@router.get("/my")
async def get_my_orders(token: str = Depends(auth_utils.oauth2_scheme)):
    payload = auth_utils.decode_token(token)
    if not payload:
        raise HTTPException(status_code=401, detail="Invalid token")
    
    user_id = payload.get("id")
    query = """
    SELECT o.*, 
           (SELECT count(*) FROM order_messages om WHERE om.order_id = o.id AND om.is_from_admin = TRUE AND om.is_read = FALSE) as unread_count,
           GROUP_CONCAT(JSON_OBJECT('file_id', f.id, 'filename', f.filename, 'file_path', f.file_path, 'quantity', f.quantity, 'preview_path', f.preview_path, 'print_time', f.print_time, 'filament_g', f.filament_g)) as files
    FROM orders o
    LEFT JOIN order_files f ON o.id = f.order_id
    WHERE o.user_id = %s
    GROUP BY o.id
    ORDER BY o.created_at DESC
    """
    results = db.execute_query(query, (user_id,))
    for row in results:
        if row['files']:
            try: row['files'] = json.loads(f"[{row['files']}]")
            except: row['files'] = []
        else: row['files'] = []
    return results

@router.post("/estimate")
async def get_price_estimate(data: schemas.EstimateRequest):
    material = db.execute_query("SELECT price_per_cm3 FROM materials WHERE id = %s", (data.material_id,))
    price_per_cm3 = float(material[0]['price_per_cm3']) if material else 0.0
    
    file_prices = []
    base_fee = 5.0
    for size in data.file_sizes:
        total_size_mb = size / (1024 * 1024)
        estimated_volume = total_size_mb * 8.0 
        file_cost = base_fee + (estimated_volume * price_per_cm3)
        file_prices.append(round(file_cost, 2))
        
    qts = data.file_quantities if data.file_quantities else [1]*len(data.file_sizes)
    return {"file_prices": file_prices, "total_estimate": round(sum(p * q for p, q in zip(file_prices, qts)), 2)}

# --- ADMIN ORDER ENDPOINTS ---

@router.get("/admin/list") # Using /admin/list to avoid conflict with /my
async def get_admin_orders(token: str = Depends(auth_utils.oauth2_scheme)):
    payload = auth_utils.decode_token(token)
    if not payload or payload.get("role") != 'admin':
        raise HTTPException(status_code=403, detail="Admin role required")
    
    query = """
    SELECT o.*, u.can_chat,
           (SELECT count(*) FROM order_messages om WHERE om.order_id = o.id AND om.is_from_admin = FALSE AND om.is_read = FALSE) as unread_count,
           GROUP_CONCAT(JSON_OBJECT('file_id', f.id, 'filename', f.filename, 'file_path', f.file_path, 'file_size', f.file_size, 'quantity', f.quantity, 'preview_path', f.preview_path, 'print_time', f.print_time, 'filament_g', f.filament_g)) as files
    FROM orders o
    LEFT JOIN users u ON o.user_id = u.id
    LEFT JOIN order_files f ON o.id = f.order_id
    GROUP BY o.id
    ORDER BY o.created_at DESC
    """
    results = db.execute_query(query)
    import session_utils
    for row in results:
        row['is_online'] = session_utils.is_user_online(row['user_id']) if row.get('user_id') else False
        if row['files']:
            try: row['files'] = json.loads(f"[{row['files']}]")
            except: row['files'] = []
        else: row['files'] = []
        photos = db.execute_query("SELECT id, file_path, is_public FROM order_photos WHERE order_id = %s", (row['id'],))
        row['photos'] = photos
    return results

@router.patch("/{order_id}/admin")
async def update_order_admin(
    order_id: int, 
    data: schemas.AdminOrderUpdate, 
    background_tasks: BackgroundTasks,
    token: str = Depends(auth_utils.oauth2_scheme)
):
    payload = auth_utils.decode_token(token)
    if not payload or payload.get("role") != 'admin':
        raise HTTPException(status_code=403, detail="Admin role required")
    
    update_fields = []
    params = []
    if data.status:
        order_info = db.execute_query("SELECT * FROM orders WHERE id = %s", (order_id,))
        if order_info:
            background_tasks.add_task(
                event_hooks.on_order_status_changed, 
                order_id, 
                data.status, 
                order_info[0], 
                data.send_notification
            )
            
            # Generate Uplatnica PDF Document on moving to "shipped" step
            if data.status == 'shipped' and not order_info[0].get('invoice_path'):
                from services.uplatnica_generator import generate_uplatnica
                o = order_info[0]
                payer_name = f"{o['first_name']} {o.get('last_name', '')}".strip()
                addr = o.get('shipping_address', '')
                price = float(o['total_price'] if o.get('total_price') is not None else o.get('estimated_price', 0))
                
                try:
                    pdf_path = generate_uplatnica(order_id, payer_name, addr, price)
                    update_fields.append("invoice_path = %s")
                    params.append(pdf_path)
                except Exception as e:
                    print(f"Failed to generate invoice PDF: {e}")

    if data.status:
        update_fields.append("status = %s")
        params.append(data.status)
    if data.total_price is not None:
        update_fields.append("total_price = %s")
        params.append(data.total_price)
    
    if data.material_id is not None:
        update_fields.append("material_id = %s")
        params.append(data.material_id)
        # Also update snapshot names and prices from handbook
        mat_info = db.execute_query("SELECT name_en, price_per_cm3 FROM materials WHERE id = %s", (data.material_id,))
        if mat_info:
            update_fields.append("material_name = %s")
            params.append(mat_info[0]['name_en'])
            update_fields.append("material_price = %s")
            params.append(mat_info[0]['price_per_cm3'])
    elif data.material_name is not None:
        update_fields.append("material_name = %s")
        params.append(data.material_name)
    
    if data.color_name is not None:
        update_fields.append("color_name = %s")
        params.append(data.color_name)
    
    if data.quantity is not None:
        update_fields.append("quantity = %s")
        params.append(data.quantity)
    
    if update_fields:
        query = f"UPDATE orders SET {', '.join(update_fields)} WHERE id = %s"
        params.append(order_id)
        db.execute_commit(query, tuple(params))
    return {"id": order_id, "status": "updated"}

@router.post("/{order_id}/attach-file")
async def admin_attach_file(
    order_id: int,
    file: UploadFile = File(...),
    token: str = Depends(auth_utils.oauth2_scheme)
):
    payload = auth_utils.decode_token(token)
    if not payload or payload.get("role") != 'admin':
        raise HTTPException(status_code=403, detail="Admin role required")
        
    unique_filename = f"{uuid.uuid4()}{os.path.splitext(file.filename)[1]}"
    file_path = os.path.join(config.UPLOAD_DIR, unique_filename)
    db_file_path = f"uploads/{unique_filename}"
    
    sha256_hash = hashlib.sha256()
    with open(file_path, "wb") as buffer:
        while chunk := file.file.read(8192):
            sha256_hash.update(chunk)
            buffer.write(chunk)
    
    preview_path = None
    db_preview_path = None
    if file_path.lower().endswith(".stl"):
        preview_filename = f"{uuid.uuid4()}.png"
        preview_path = os.path.join(config.PREVIEW_DIR, preview_filename)
        db_preview_path = f"uploads/previews/{preview_filename}"
        preview_utils.generate_stl_preview(file_path, preview_path)

    filament_g = None
    print_time = None
    if file_path.lower().endswith(".stl"):
        result = slicer_utils.slice_model(file_path)
        if result and result.get('success'):
            filament_g = result.get('filament_g')
            print_time = result.get('print_time_str')

    query = "INSERT INTO order_files (order_id, filename, file_path, file_size, quantity, file_hash, print_time, filament_g, preview_path) VALUES (%s, %s, %s, %s, 1, %s, %s, %s, %s)"
    f_id = db.execute_commit(query, (order_id, file.filename, db_file_path, file.size, sha256_hash.hexdigest(), print_time, filament_g, db_preview_path))
    
    return {"file_id": f_id, "filename": file.filename, "preview_path": db_preview_path, "filament_g": filament_g, "print_time": print_time}

@router.delete("/{order_id}/files/{file_id}")
async def admin_delete_file(
    order_id: int,
    file_id: int,
    token: str = Depends(auth_utils.oauth2_scheme)
):
    payload = auth_utils.decode_token(token)
    if not payload or payload.get("role") != 'admin':
        raise HTTPException(status_code=403, detail="Admin role required")
        
    file_record = db.execute_query("SELECT file_path, preview_path FROM order_files WHERE id = %s AND order_id = %s", (file_id, order_id))
    if not file_record:
        raise HTTPException(status_code=404, detail="File not found")
        
    base_dir = config.BASE_DIR
    try:
        if file_record[0]['file_path']:
            os.remove(os.path.join(base_dir, file_record[0]['file_path']))
        if file_record[0]['preview_path']:
            os.remove(os.path.join(base_dir, file_record[0]['preview_path']))
    except Exception as e:
        print(f"Error removing file from disk: {e}")
        
    db.execute_commit("DELETE FROM order_files WHERE id = %s AND order_id = %s", (file_id, order_id))
    return {"status": "success"}