import json
import os
from datetime import datetime

import gradio as gr
from PIL import Image
from dotenv import load_dotenv

from google_drive_client import GoogleDriveClient
from openai_service import OpenAIService
from qr_retriever import get_receipt_by_qr
from utils import read_prompt_from_file, process_receipt_json, save_to_excel, \
    encode_image_to_webp_base64
from vertex_ai_service import VertexAIService

load_dotenv()
isFullVersion = os.getenv("COLLECTION_DATA_VERSION") != "True"
if isFullVersion:
    model_names = ["gemini-1.5-flash", "gemini-1.5-pro", "gemini-flash-experimental", "gemini-pro-experimental", "gemini-2.0-flash-exp", "gemini-2.0-flash-thinking-exp-01-21",
                   "gpt-4o-mini", "gpt-4o", "QR-processing"]
else:
    model_names = ["gemini-1.5-flash", "gemini-1.5-pro", "gemini-flash-experimental", "gemini-pro-experimental", "gemini-2.0-flash-exp", "gemini-2.0-flash-thinking-exp-01-21", "QR-processing"]

prompt_names = ["prompt_v1", "prompt_v2", "prompt_v3"]
# example_list = [["./examples/" + example] for example in os.listdir("examples")]
example_list_sl = [["./examples_sl/" + example] for example in os.listdir("examples_sl")]
example_list_ua = [["./examples_ua/" + example] for example in os.listdir("examples_ua")]
example_list_us = [["./examples_us/" + example] for example in os.listdir("examples_us")]
example_list_canada = [["./examples_canada/" + example] for example in os.listdir("examples_canada")]
example_france = [["./examples_france/" + example] for example in os.listdir("examples_france")]

prompt_default = read_prompt_from_file("common/prompt_v1.txt")
system_instruction = read_prompt_from_file("system_instruction.txt")


def process_image(input_image, model_name, prompt_name, temperatura, system_instruction=None, current_prompt_text=None):
    # print(model_name)
    # print(prompt_name)
    # print(temperatura)
    # print(custom_prompt_text)
    if system_instruction is None:
        system_instruction = ""
    if input_image is None:
        return model_name, "Image not found. Load image ", "", [], [], "", gr.update(interactive=False), gr.update(
            interactive=False), gr.update(interactive=False), ""

    if prompt_name is None:
        prompt_name = "prompt_v1"
        prompt_file = f"{prompt_name}.txt"
        prompt = read_prompt_from_file(prompt_file)
    if prompt_name is None:
        current_prompt_text = prompt_default

    # if prompt_name != "custom":
    #     prompt_file = f"{prompt_name}.txt"
    #     prompt = read_prompt_from_file(prompt_file)
    # else:
    #     if current_prompt_text is None or current_prompt_text.strip() == "":
    #         return json.dumps({"error": "No prompt provided."})
    prompt = current_prompt_text
    # print(prompt)
    print("file name:", input_image)
    print("model_name:", model_name)
    print("prompt_name:", prompt_name)
    print("Temperatura:", temperatura)

    # base64_image = encode_image_from_gradio(input_image)
    base64_image = encode_image_to_webp_base64(input_image)

    try:
        if model_name.startswith("QR"):
            try:
                original_json, parsed_result = get_receipt_by_qr(input_image)
            except Exception as e:
                print(e)
                return model_name, "Error get_receipt_by_qr", "", [], [], "", gr.update(interactive=False), gr.update(
                    interactive=False), gr.update(interactive=False), ""
            print("original_json", original_json)
            print("receipt", parsed_result)
            if parsed_result:
                parsed_result = clean_value(parsed_result)
                parsed_result["sub_total_amount"] = "unknown"
                for key, value in parsed_result.items():
                    print(f"Key: {key}, Value: {value}")

        elif model_name.startswith("gpt"):
            # result = gpt_process_image(base64_image, model_name, prompt, system_instruction, temperatura)
            result, model_input = open_ai_client.process_image(base64_image, model_name, prompt, system_instruction, temperatura)
            parsed_result = json.loads(result)

        else:
            result, model_input = vertex_ai_client.process_image(base64_image, model_name, prompt, system_instruction,
                                                    temperatura)
            parsed_result = json.loads(result)

        parsed_result['file_name'] = os.path.basename(input_image)

        result = json.dumps(parsed_result, ensure_ascii=False, indent=4)
        # result = result.encode('utf-8').decode('unicode_escape')
        print(result)
    except Exception as e:
        print(f"Exception occurred: {e}")
        result = json.dumps({"error": "Error processing: Check prompt or images"})
        return model_name, result, "", "", "", "", gr.update(interactive=True), gr.update(
            interactive=True), gr.update(interactive=True), ""

    # print (result)
    try:
        store_info, items_table, taxs_table, message = process_receipt_json(result)
        print(store_info)
        print(items_table)
    except Exception as e:
        print(f"Exception occurred: {e}")
        result = json.dumps({"error": "process_receipt_json"})
        return model_name, result, "", "", "", "", gr.update(interactive=False), gr.update(
            interactive=False), gr.update(interactive=False), ""

    return model_name, result, store_info, items_table, taxs_table, message, gr.update(interactive=True), gr.update(
        interactive=True), gr.update(interactive=True), ""


def clean_value(value):
    if isinstance(value, list):
        return [clean_value(v) for v in value]
    elif isinstance(value, dict):
        return {k: clean_value(v) for k, v in value.items()}
    elif value is None:
        return "unknown"
    else:
        return value


def save_flag_data(save_type, image, model_name, prompt_name, temperatura, current_prompt_text, model_output,
                   json_output,
                   store_info_output, items_list, comments_output, system_instruction,
                   flagging_dir="custom_flagged_data"):
    save_button_update = gr.update(interactive=False)
    image_link, json_link, excel_link = None, None, None
    try:

        # List files in the directory
        try:
            files = [f for f in os.listdir(flagging_dir) if os.path.isfile(os.path.join(flagging_dir, f))]
            if files:
                print("Files in directory:", flagging_dir)
                for file in files:
                    print(file)
            else:
                print(f"No files found in directory: {flagging_dir}")
        except Exception as e:
            print(f"Error listing files in directory: {e}")

        image_file_path = image
        print("save_type:", save_type)
        print("Image File Path:", image)
        print("prompt_name:", prompt_name)
        print("Model Name:", model_name)
        print("Result as JSON:", json_output)
        print("comments:", comments_output)
        print("system_instruction:", system_instruction)

        timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
        original_filename = os.path.basename(image_file_path)
        filename, file_extension = os.path.splitext(original_filename)
        base_filename = f"{filename}_{model_name}_{prompt_name}_{timestamp}"

        # Save image
        image_save_path = os.path.join(flagging_dir, f"{base_filename}{file_extension}")
        image = Image.open(image_file_path)
        image.save(image_save_path)

        if os.path.exists(image_save_path):
            saved_image = Image.open(image_save_path)
            image_size = saved_image.size
            print(f"Image saved at: {image_save_path}, Size: {image_size}")
        else:
            print(f"Failed to save image at: {image_save_path}")
            return 0

        # Save result as JSON
        json_file_path = os.path.join(flagging_dir, f"{base_filename}.json")
        data_to_save = {
            "image_name": f"{base_filename}{file_extension}",
            "prompt_name": prompt_name,
            "system_instruction": system_instruction,
            "prompt": current_prompt_text,
            "model_name": model_name,
            "result_json": json_output,
            "comments": comments_output,
            "save_type": save_type
        }

        data_to_save_encode = json.dumps(data_to_save, ensure_ascii=False, indent=4)
        print("data_to_save_encode: ", data_to_save_encode)

        with open(json_file_path, 'w', encoding='utf-8') as json_file:
            json_file.write(data_to_save_encode)

        excel_file_path = os.path.join(flagging_dir, f"{base_filename}.xlsx")
        try:
            save_to_excel(json_output, excel_file_path, image_file_path)
        except Exception as e:
            print(f"Error while saving to excel: {e}")

        # Upload files to Google Drive
        google_drive_client_current = GoogleDriveClient(json_key_path='secrets/GOOGLE_SERVICE_ACCOUNT_KEY.json')
        if google_drive_client_current:
            try:
                image_folder_id = '10qtum6ykbGTyu7vvw59i3h1XSY3-lRpo'
                image_link = google_drive_client_current.upload_file(image_save_path, image_folder_id)
                json_link = google_drive_client_current.upload_file(json_file_path, image_folder_id)
                excel_link = google_drive_client_current.upload_file(excel_file_path, image_folder_id)
                print(f"Image uploaded to Google Drive. Link: {image_link}")
                print(f"JSON file uploaded to Google Drive. Link: {json_link}")
                print(f"Excel file uploaded to Google Drive. Link: {excel_link}")
            except Exception as e:
                print(f"Error uploading files to Google Drive: {e}")
        else:
            print(f"Error google_drive_client does not available")

    except Exception as e:
        print(f"Error while saving flag data: {e}")
    links = f"Image: {image_link}\nJSON: {json_link}\nExcel: {excel_link} \n shared lofder: https://drive.google.com/drive/folders/10qtum6ykbGTyu7vvw59i3h1XSY3-lRpo?usp=drive_link \n"
    return save_button_update, save_button_update, save_button_update, links


def update_prompt_from_radio(prompt_name):
    if prompt_name == "prompt_v1":
        return read_prompt_from_file("common/prompt_v1.txt")
    elif prompt_name == "prompt_v2":
        return read_prompt_from_file("common/prompt_v2.txt")
    elif prompt_name == "prompt_v3":
        return read_prompt_from_file("common/prompt_v3.txt")
    else:
        return read_prompt_from_file("common/prompt_v1.txt")


#google_drive_client = GoogleDriveClient(json_key_path='secrets/GOOGLE_SERVICE_DRIVE_KEY_435817.json')
#vertex_ai_client = VertexAIService(json_key_path='secrets/GOOGLE_VERTEX_AI_KEY_435817.json')
google_drive_client = GoogleDriveClient()
vertex_ai_client = VertexAIService()


key = None
key_file_path = 'secrets/OPENAI_AI_KEY.txt'
if os.path.exists(key_file_path):
    try:
        with open(key_file_path, 'r') as key_file:
            key = key_file.read().strip()
    except Exception as e:
        print(f"Error reading file: {e}")

open_ai_client = OpenAIService(api_key=key)

with gr.Blocks() as iface:
    gr.Markdown("# ReceiptAI")
    gr.Markdown("ReceiptAI")

    with gr.Row():
        with gr.Column(scale=1):
            image_input = gr.Image(type="filepath")
            model_radio = gr.Radio(model_names, label="Choose model/QR-processing(Slovakia)", value=model_names[0])
            prompt_radio = gr.Radio(prompt_names, label="Choose prompt", value=prompt_names[0], visible=isFullVersion)
            temperature_slider = gr.Slider(minimum=0.0, maximum=1.0, step=0.1, label="Temperatura", value=0.0,
                                           visible=isFullVersion)
            system_instruction = gr.Textbox(label="System Instruction", visible=isFullVersion, value=system_instruction)
            custom_prompt = gr.Textbox(label="prompt text", visible=isFullVersion, value=prompt_default)
            with gr.Row():
                submit_button = gr.Button("Receipt recognizing ")

        with gr.Column(scale=2):
            model_output = gr.Textbox(label="MODEL/QR-processing(Slovakia)", lines=1, interactive=isFullVersion)
            json_output = gr.Textbox(label="Result as json")
            store_info_output = gr.Textbox(label="Store Information", lines=4)
            items_list = gr.Dataframe(
                headers=["Item Name", "Category", "Unit Price", "Quantity", "Unit", "Total Price", "Discount",
                         "Item price with tax", "Grand Total"],
                label="Items List")
            taxes_list = gr.Dataframe(
                headers=["Tax Name", "%", "tax from amount", "tax", "total", "tax included"],
                label="Tax List")
            comments_output = gr.Textbox(label="Comments", visible=True, lines=4, interactive=True)
            with gr.Row():
                save_good_button = gr.Button(value="Save as Good", interactive=False)
                save_average_button = gr.Button(value="Save as Average", interactive=False)
                save_poor_button = gr.Button(value="Save as Poor", interactive=False)
            file_links_output = gr.Textbox(label="File Links", interactive=False, visible=True)
    submit_button.click(fn=process_image,
                        inputs=[image_input, model_radio, prompt_radio, temperature_slider, system_instruction,
                                custom_prompt],
                        outputs=[model_output, json_output, store_info_output, items_list, taxes_list, comments_output,
                                 save_good_button, save_average_button, save_poor_button, file_links_output])
    common_inputs = [image_input, model_radio, prompt_radio, temperature_slider, custom_prompt, model_output,
                     json_output, store_info_output, items_list, comments_output, system_instruction]


    def save_flag_data_wrapper(save_type, image, model_name, prompt_name, temperatura, custom_prompt, model_output,
                               json_output, store_info_output, items_list, comments_output, system_instruction):
        # Ensure that `image` is a file path and not an object.
        image_file_path = image  # Gradio returns the path as a string
        model_name_value = model_name  # Extract selected value
        prompt_name_value = prompt_name  # Extract selected value

        # The following variables should be passed as the values they hold
        save_good_update, save_avg_update, save_poor_update, file_links = save_flag_data(
            save_type, image, model_name, prompt_name, temperatura, custom_prompt, model_output, json_output,
            store_info_output, items_list, comments_output, system_instruction
        )
        return save_good_update, save_avg_update, save_poor_update, file_links


    # Use the same common_inputs for all buttons but ensure the correct values are passed
    save_good_button.click(
        fn=lambda *args: save_flag_data_wrapper("Good", *args),
        inputs=common_inputs,
        outputs=[save_good_button, save_average_button, save_poor_button, file_links_output]
    )

    save_average_button.click(
        fn=lambda *args: save_flag_data_wrapper("Average", *args),
        inputs=common_inputs,
        outputs=[save_good_button, save_average_button, save_poor_button, file_links_output]
    )

    save_poor_button.click(
        fn=lambda *args: save_flag_data_wrapper("Poor", *args),
        inputs=common_inputs,
        outputs=[save_good_button, save_average_button, save_poor_button, file_links_output]
    )
    prompt_radio.change(fn=update_prompt_from_radio, inputs=[prompt_radio], outputs=[custom_prompt])
    gr.Examples(examples=example_list_sl,
                inputs=[image_input, model_radio, prompt_radio, temperature_slider, custom_prompt],
                label="Examples for Slovakia")
    if isFullVersion:
        gr.Examples(examples=example_list_ua,
                    inputs=[image_input, model_radio, prompt_radio, temperature_slider, custom_prompt],
                    label="Examples for Ukrainian")

        gr.Examples(examples=example_list_us,
                    inputs=[image_input, model_radio, prompt_radio, temperature_slider, custom_prompt],
                    label="Examples for US")

        gr.Examples(examples=example_list_canada,
                    inputs=[image_input, model_radio, prompt_radio, temperature_slider, custom_prompt],
                    label="Examples for Canada")

        gr.Examples(examples=example_france,
                    inputs=[image_input, model_radio, prompt_radio, temperature_slider, custom_prompt],
                    label="Examples for France")

iface.launch(server_name="0.0.0.0", server_port=7860)