from flask import Flask, request, jsonify
from flasgger import Swagger
from datetime import datetime

app = Flask(__name__)

# Swagger configuration (serve UI at /docs)
app.config["SWAGGER"] = {
    "title": "Ahmed Gamal's Fruit API",
    "uiversion": 3,
    "swagger_ui": True,
    "specs_route": "/docs/"   # force Swagger UI to mount at /docs
}
swagger = Swagger(app)

# Root endpoint (http://localhost:5000/)
@app.route("/", methods=["GET"])
def home():
    return jsonify({
        "message": "Welcome to Ahmed Gamal's Fruit API 🚀",
        "docs_url": "/docs"
    })

# Sample data
fruits = [
    {"id": 1, "name": "Apple", "color": "Red", "price": 1.5, "quantity": 100, "category": "Tropical"},
    {"id": 2, "name": "Banana", "color": "Yellow", "price": 0.75, "quantity": 150, "category": "Tropical"},
    {"id": 3, "name": "Orange", "color": "Orange", "price": 1.2, "quantity": 80, "category": "Citrus"}
]

@app.route("/health", methods=["GET"])
def health():
    """
    Health Check
    ---
    tags:
      - Health
    responses:
      200:
        description: API is healthy
    """
    return jsonify({
        "service": "fruit-api",
        "status": "healthy",
        "timestamp": datetime.utcnow().isoformat()
    })

@app.route("/fruits", methods=["GET"])
def get_fruits():
    """
    Get All Fruits
    ---
    tags:
      - Fruits
    responses:
      200:
        description: A list of all fruits
    """
    return jsonify({"fruits": fruits, "total": len(fruits)})

@app.route("/fruits/<int:fruit_id>", methods=["GET"])
def get_fruit(fruit_id):
    """
    Get a Fruit by ID
    ---
    tags:
      - Fruits
    parameters:
        - name: fruit_id
          in: path
          type: integer
          required: true
    responses:
      200:
        description: Fruit details
      404:
        description: Fruit not found
    """
    fruit = next((f for f in fruits if f["id"] == fruit_id), None)
    if fruit:
        return jsonify({"fruit": fruit})
    return jsonify({"error": "Fruit not found"}), 404

@app.route("/fruits", methods=["POST"])
def create_fruit():
    """
    Create a New Fruit
    ---
    tags:
      - Fruits
    parameters:
      - name: body
        in: body
        required: true
        schema:
          type: object
          properties:
            name: {type: string}
            color: {type: string}
            price: {type: number}
            quantity: {type: integer}
            category: {type: string}
    responses:
      201:
        description: Fruit created
    """
    data = request.get_json()
    new_fruit = {
        "id": len(fruits) + 1,
        "name": data.get("name"),
        "color": data.get("color"),
        "price": data.get("price"),
        "quantity": data.get("quantity"),
        "category": data.get("category"),
        "created_at": datetime.utcnow().isoformat()
    }
    fruits.append(new_fruit)
    return jsonify({"message": "Fruit created successfully", "fruit": new_fruit}), 201

@app.route("/fruits/<int:fruit_id>", methods=["PUT"])
def update_fruit(fruit_id):
    """
    Update a Fruit
    ---
    tags:
      - Fruits
    parameters:
      - name: fruit_id
        in: path
        type: integer
        required: true
      - name: body
        in: body
        required: true
        schema:
          type: object
    responses:
      200:
        description: Fruit updated
      404:
        description: Fruit not found
    """
    fruit = next((f for f in fruits if f["id"] == fruit_id), None)
    if not fruit:
        return jsonify({"error": "Fruit not found"}), 404

    data = request.get_json()
    fruit.update(data)
    fruit["updated_at"] = datetime.utcnow().isoformat()
    return jsonify({"message": "Fruit updated successfully", "fruit": fruit})

@app.route("/fruits/<int:fruit_id>", methods=["DELETE"])
def delete_fruit(fruit_id):
    """
    Delete a Fruit
    ---
    tags:
      - Fruits
    parameters:
      - name: fruit_id
        in: path
        type: integer
        required: true
    responses:
      200:
        description: Fruit deleted
      404:
        description: Fruit not found
    """
    global fruits
    fruit = next((f for f in fruits if f["id"] == fruit_id), None)
    if not fruit:
        return jsonify({"error": "Fruit not found"}), 404
    fruits = [f for f in fruits if f["id"] != fruit_id]
    return jsonify({"message": "Fruit deleted successfully", "deleted_fruit": fruit})

@app.route("/fruits/search", methods=["GET"])
def search_fruits():
    """
    Search Fruits by Name
    ---
    tags:
      - Fruits
    parameters:
      - name: name
        in: query
        type: string
        required: true
    responses:
      200:
        description: Search results
    """
    name = request.args.get("name", "").lower()
    results = [f for f in fruits if name in f["name"].lower()]
    return jsonify({"search_term": name, "count": len(results), "results": results})

@app.route("/fruits/category/<string:category>", methods=["GET"])
def get_fruits_by_category(category):
    """
    Get Fruits by Category
    ---
    tags:
      - Fruits
    parameters:
      - name: category
        in: path
        type: string
        required: true
    responses:
      200:
        description: Fruits by category
    """
    results = [f for f in fruits if f["category"].lower() == category.lower()]
    return jsonify({"category": category, "count": len(results), "fruits": results})

if __name__ == "__main__":
    app.run(debug=True, host="0.0.0.0", port=5000)