# -*- coding: utf-8 -*-
import gradio as gr
import json
import os # Added to access environment variables

# Assuming these custom modules exist in your project directory or Python path
from Data_Fetching_and_Rendering import fetch_and_render_dashboard
from analytics_fetch_and_rendering import fetch_and_render_analytics
from mentions_dashboard import generate_mentions_dashboard

# Import the function from your utils file
from gradio_utils import get_url_user_token
# Import the Bubble API call function (ensure filename matches: Bubble_API_Calls.py)
from Bubble_API_Calls import fetch_linkedin_token_from_bubble

# --- Session State dependent functions ---
def check_token_status(current_token_state):
    """Checks if a token exists in the session state."""
    # Only check for the presence of the token
    if current_token_state and current_token_state.get("token"):
        return "✅ Token available"
    return "❌ Token not available" # Changed message for clarity

# --- Function to process and store token from Bubble ---
def process_and_store_bubble_token(url_user_token_str, current_token_state):
    """
    Fetches token from Bubble, loads client_id from env, updates session state,
    and returns UI update values.
    Args:
        url_user_token_str: The token string extracted from the URL.
        current_token_state: The current session state for the token.
    Returns:
        Tuple: (bubble_api_status_msg, overall_token_status_msg, updated_token_state)
    """
    bubble_api_status_msg = "Waiting for URL token..."
    # Initialize new_token_state, removing the 'status' field
    new_token_state = current_token_state.copy() if current_token_state else {"token": None, "client_id": None}
    new_token_state["token"] = None # Assume no token until successfully fetched

    # Attempt to load Linkedin_client_id from environment variable
    linkedin_client_id_from_env = os.environ.get("Linkedin_client_id")

    if not linkedin_client_id_from_env:
        bubble_api_status_msg = "❌ CRITICAL ERROR: 'Linkedin_client_id' environment variable not set."
        print(bubble_api_status_msg)
        new_token_state["client_id"] = "ENV VAR MISSING" # Indicate error in state
        # Return values: bubble_api_status, overall_token_status, new_token_state
        return check_token_status(new_token_state), new_token_state

    # Store client_id from env in the state, regardless of token outcome (if env var exists)
    new_token_state["client_id"] = linkedin_client_id_from_env

    if not url_user_token_str or "not found" in url_user_token_str or "Could not access" in url_user_token_str:
        bubble_api_status_msg = f"ℹ️ No valid user token from URL to query Bubble. ({url_user_token_str})"
        # Client ID is known (if env var was found), but no token to fetch
        return check_token_status(new_token_state), new_token_state

    print(f"Attempting to fetch token from Bubble with user token: {url_user_token_str}") # Changed "state" to "user token" for clarity
    parsed_token_dict = fetch_linkedin_token_from_bubble(url_user_token_str)

    if parsed_token_dict and isinstance(parsed_token_dict, dict) and "access_token" in parsed_token_dict:
        new_token_state["token"] = parsed_token_dict # Store the actual token
        bubble_api_status_msg = f"✅ Token successfully fetched from Bubble for user token: {url_user_token_str}. Client ID loaded."
        print(bubble_api_status_msg)
    else:
        bubble_api_status_msg = f"❌ Failed to fetch a valid token from Bubble for user token: {url_user_token_str}. Check console logs from Bubble_API_Calls.py."
        print(bubble_api_status_msg)
        # Token fetch failed, token remains None. Client_id is already set if env var was found.

    # Return values: bubble_api_status, overall_token_status, new_token_state
    return check_token_status(new_token_state), new_token_state

# --- Guarded fetch functions (now use token_state, checking only for token presence) ---
def guarded_fetch_dashboard(current_token_state):
    # Check only for the presence of the token
    if not (current_token_state and current_token_state.get("token")):
        return "<p style='color:red; text-align:center;'>❌ Access denied. No token available.</p>"
    html = fetch_and_render_dashboard(
        current_token_state.get("client_id"), # Use .get for safety
        current_token_state.get("token")
    )
    return html

def guarded_fetch_analytics(current_token_state):
    # Check only for the presence of the token
    if not (current_token_state and current_token_state.get("token")):
        return (
            "<p style='color:red; text-align:center;'>❌ Access denied. No token available.</p>",
            None, None, None, None, None, None, None
        )
    client_id = current_token_state.get("client_id")
    token_data = current_token_state.get("token")
    count_md, plot, growth_plot, avg_post_eng_rate, interaction_metrics, eb_metrics, mentions_vol_metrics, mentions_sentiment_metrics = fetch_and_render_analytics(
        client_id,
        token_data
    )
    return count_md, plot, growth_plot, avg_post_eng_rate, interaction_metrics, eb_metrics, mentions_vol_metrics, mentions_sentiment_metrics

def run_mentions_and_load(current_token_state):
    # Check only for the presence of the token
    if not (current_token_state and current_token_state.get("token")):
        return ("<p style='color:red; text-align:center;'>❌ Access denied. No token available.</p>", None)
    html, fig = generate_mentions_dashboard(
        current_token_state.get("client_id"),
        current_token_state.get("token")
    )
    return html, fig

# --- Build the Gradio UI ---
with gr.Blocks(theme=gr.themes.Soft(primary_hue="blue", secondary_hue="sky"),
               title="LinkedIn Post Viewer & Analytics") as app:

    # Modified token_state: removed 'status', client_id will be populated from env
    token_state = gr.State(value={"token": None, "client_id": None})

    gr.Markdown("# 🚀 LinkedIn Organization Post Viewer & Analytics")
    gr.Markdown("Token is supplied via URL parameter for Bubble.io lookup. Then explore dashboard and analytics.")

    url_user_token_display = gr.Textbox(
        label="User Token (from URL - Hidden)",
        interactive=False,
        placeholder="Attempting to load from URL...",
        visible=False # Kept hidden as per original logic
    )

    status_box = gr.Textbox(label="Overall Token Status", interactive=False, placeholder="Waiting for token check...") # Added placeholder

    app.load(
        fn=get_url_user_token,
        inputs=None,
        outputs=[url_user_token_display]
    )

    # Modified outputs for process_and_store_bubble_token
    url_user_token_display.change(
        fn=process_and_store_bubble_token,
        inputs=[url_user_token_display, token_state],
        outputs=[status_box, token_state] # Removed client_display
    )

    # app.load to initialize status_box based on initial token_state
    app.load(fn=check_token_status, inputs=[token_state], outputs=status_box)
    # Removed app.load for get_active_client_id and client_display

    timer = gr.Timer(5.0)
    timer.tick(fn=check_token_status, inputs=[token_state], outputs=status_box)
    # Removed timer.tick for get_active_client_id and client_display

    with gr.Tabs():
        with gr.TabItem("1️⃣ Dashboard"):
            gr.Markdown("View your organization's recent posts and their engagement statistics.")
            fetch_dashboard_btn = gr.Button("📊 Fetch Posts & Stats", variant="primary")
            dashboard_html = gr.HTML(value="<p style='text-align: center; color: #555;'>Waiting for token...</p>")
            fetch_dashboard_btn.click(
                fn=guarded_fetch_dashboard,
                inputs=[token_state],
                outputs=[dashboard_html]
            )

        with gr.TabItem("2️⃣ Analytics"):
            gr.Markdown("View follower count and monthly gains for your organization.")
            fetch_analytics_btn = gr.Button("📈 Fetch Follower Analytics", variant="primary")

            follower_count = gr.Markdown("<p style='text-align: center; color: #555;'>Waiting for token...</p>")

            with gr.Row():
                follower_plot = gr.Plot(visible=True)
                growth_rate_plot = gr.Plot(visible=True)
            with gr.Row():
                post_eng_rate_plot = gr.Plot(visible=True)
            with gr.Row():
                interaction_data = gr.Plot(visible=True)
            with gr.Row():
                eb_data = gr.Plot(visible=True)
            with gr.Row():
                mentions_vol_data = gr.Plot(visible=True)
                mentions_sentiment_data = gr.Plot(visible=True)

            fetch_analytics_btn.click(
                fn=guarded_fetch_analytics,
                inputs=[token_state],
                outputs=[follower_count, follower_plot, growth_rate_plot, post_eng_rate_plot, interaction_data, eb_data, mentions_vol_data, mentions_sentiment_data]
            )

        with gr.TabItem("3️⃣ Mentions"):
            gr.Markdown("Analyze sentiment of recent posts that mention your organization.")
            fetch_mentions_btn = gr.Button("🧠 Fetch Mentions & Sentiment", variant="primary")
            mentions_html = gr.HTML(value="<p style='text-align: center; color: #555;'>Waiting for token...</p>")
            mentions_plot = gr.Plot(visible=True)
            fetch_mentions_btn.click(
                fn=run_mentions_and_load,
                inputs=[token_state],
                outputs=[mentions_html, mentions_plot]
            )

if __name__ == "__main__":
    # Ensure the Linkedin_client_id environment variable is set before launching.
    # You might want to add a check here and print a warning if it's not set.
    if not os.environ.get("Linkedin_client_id"):
        print("WARNING: The 'Linkedin_client_id' environment variable is not set. The application may not function correctly.")
    app.launch(server_name="0.0.0.0", server_port=7860, share=True)