import streamlit as st
from azure.cosmos import CosmosClient, PartitionKey, exceptions
import os
import pandas as pd
import traceback
import requests
import shutil
import zipfile
from github import Github
from git import Repo
from datetime import datetime
import base64
import json

st.set_page_config(layout="wide")

# Cosmos DB configuration
ENDPOINT = "https://acae-afd.documents.azure.com:443/"
SUBSCRIPTION_ID = "003fba60-5b3f-48f4-ab36-3ed11bc40816"
DATABASE_NAME = os.environ.get("COSMOS_DATABASE_NAME")
CONTAINER_NAME = os.environ.get("COSMOS_CONTAINER_NAME")
Key = os.environ.get("Key")

# GitHub configuration
def download_github_repo(url, local_path):
    if os.path.exists(local_path):
        shutil.rmtree(local_path)
    Repo.clone_from(url, local_path)

def create_zip_file(source_dir, output_filename):
    shutil.make_archive(output_filename, 'zip', source_dir)

def create_repo(g, repo_name):
    user = g.get_user()
    return user.create_repo(repo_name)

def push_to_github(local_path, repo, github_token):
    repo_url = f"https://{github_token}@github.com/{repo.full_name}.git"
    local_repo = Repo(local_path)
    
    if 'origin' in [remote.name for remote in local_repo.remotes]:
        origin = local_repo.remote('origin')
        origin.set_url(repo_url)
    else:
        origin = local_repo.create_remote('origin', repo_url)
    
    if not local_repo.heads:
        local_repo.git.checkout('-b', 'main')
        current_branch = 'main'
    else:
        current_branch = local_repo.active_branch.name
    
    local_repo.git.add(A=True)
    
    if local_repo.is_dirty():
        local_repo.git.commit('-m', 'Initial commit')
    
    origin.push(refspec=f'{current_branch}:{current_branch}')

def get_base64_download_link(file_path, file_name):
    with open(file_path, "rb") as file:
        contents = file.read()
    base64_encoded = base64.b64encode(contents).decode()
    return f'<a href="data:application/zip;base64,{base64_encoded}" download="{file_name}">Download {file_name}</a>'

# Cosmos DB functions
def insert_record(record):
    try:
        response = container.create_item(body=record)
        return True, response
    except exceptions.CosmosHttpResponseError as e:
        return False, f"HTTP error occurred: {str(e)}. Status code: {e.status_code}"
    except Exception as e:
        return False, f"An unexpected error occurred: {str(e)}"

def call_stored_procedure(record):
    try:
        response = container.scripts.execute_stored_procedure(
            sproc="processPrompt",
            params=[record],
            partition_key=record['id']
        )
        return True, response
    except exceptions.CosmosHttpResponseError as e:
        error_message = f"HTTP error occurred: {str(e)}. Status code: {e.status_code}"
        return False, error_message
    except Exception as e:
        error_message = f"An unexpected error occurred: {str(e)}"
        return False, error_message

def fetch_all_records():
    try:
        query = "SELECT * FROM c"
        items = list(container.query_items(query=query, enable_cross_partition_query=True))
        return pd.DataFrame(items)
    except exceptions.CosmosHttpResponseError as e:
        st.error(f"HTTP error occurred while fetching records: {str(e)}. Status code: {e.status_code}")
        return pd.DataFrame()
    except Exception as e:
        st.error(f"An unexpected error occurred while fetching records: {str(e)}")
        return pd.DataFrame()

def update_record(updated_record):
    try:
        container.upsert_item(body=updated_record)
        return True, f"Record with id {updated_record['id']} successfully updated."
    except exceptions.CosmosHttpResponseError as e:
        return False, f"HTTP error occurred: {str(e)}. Status code: {e.status_code}"
    except Exception as e:
        return False, f"An unexpected error occurred: {traceback.format_exc()}"

def delete_record(name, id):
    try:
        container.delete_item(item=id, partition_key=id)
        return True, f"Successfully deleted record with name: {name} and id: {id}"
    except exceptions.CosmosResourceNotFoundError:
        return False, f"Record with id {id} not found. It may have been already deleted."
    except exceptions.CosmosHttpResponseError as e:
        return False, f"HTTP error occurred: {str(e)}. Status code: {e.status_code}"
    except Exception as e:
        return False, f"An unexpected error occurred: {traceback.format_exc()}"

# New function to archive all databases and containers
def archive_all_data(client):
    try:
        base_dir = "./cosmos_archive"
        if os.path.exists(base_dir):
            shutil.rmtree(base_dir)
        os.makedirs(base_dir)

        for database in client.list_databases():
            db_name = database['id']
            db_dir = os.path.join(base_dir, db_name)
            os.makedirs(db_dir)

            db_client = client.get_database_client(db_name)
            for container in db_client.list_containers():
                container_name = container['id']
                container_dir = os.path.join(db_dir, container_name)
                os.makedirs(container_dir)

                container_client = db_client.get_container_client(container_name)
                items = list(container_client.read_all_items())

                with open(os.path.join(container_dir, f"{container_name}.json"), 'w') as f:
                    json.dump(items, f, indent=2)

        archive_name = f"cosmos_archive_{datetime.now().strftime('%Y%m%d_%H%M%S')}"
        shutil.make_archive(archive_name, 'zip', base_dir)
        
        return get_base64_download_link(f"{archive_name}.zip", f"{archive_name}.zip")
    except Exception as e:
        return f"An error occurred while archiving data: {str(e)}"

# Streamlit app
st.title("🌟 Cosmos DB and GitHub Integration")

# Initialize session state
if 'logged_in' not in st.session_state:
    st.session_state.logged_in = False
if 'selected_records' not in st.session_state:
    st.session_state.selected_records = []

# Login section
if not st.session_state.logged_in:
    st.subheader("🔐 Login")
    input_key = Key
    if st.button("🚀 Login"):
        if input_key:
            st.session_state.primary_key = input_key
            st.session_state.logged_in = True
            st.rerun()
        else:
            st.error("Invalid key. Please check your environment variables.")
else:
    # Initialize Cosmos DB client
    try:
        client = CosmosClient(ENDPOINT, credential=st.session_state.primary_key)
        database = client.get_database_client(DATABASE_NAME)
        container = database.get_container_client(CONTAINER_NAME)
    except exceptions.CosmosHttpResponseError as e:
        st.error(f"Failed to connect to Cosmos DB. HTTP error: {str(e)}. Status code: {e.status_code}")
        st.stop()
    except Exception as e:
        st.error(f"An unexpected error occurred while connecting to Cosmos DB: {str(e)}")
        st.stop()

    # GitHub section
    st.subheader("🐙 GitHub Operations")
    github_token = st.text_input("GitHub Personal Access Token", type="password")
    source_repo = st.text_input("Source GitHub Repository URL")
    new_repo_name = st.text_input("New Repository Name (for cloning)")
    
    col1, col2 = st.columns(2)
    with col1:
        if st.button("📥 Clone Repository"):
            if github_token and source_repo and new_repo_name:
                try:
                    local_path = f"./temp_repo_{datetime.now().strftime('%Y%m%d_%H%M%S')}"
                    download_github_repo(source_repo, local_path)
                    zip_filename = f"{new_repo_name}.zip"
                    create_zip_file(local_path, zip_filename[:-4])
                    st.markdown(get_base64_download_link(zip_filename, zip_filename), unsafe_allow_html=True)
                    st.success("Repository cloned successfully!")
                except Exception as e:
                    st.error(f"An error occurred: {str(e)}")
                finally:
                    if os.path.exists(local_path):
                        shutil.rmtree(local_path)
                    if os.path.exists(zip_filename):
                        os.remove(zip_filename)
            else:
                st.error("Please provide all required GitHub information.")

    with col2:
        if st.button("📤 Push to New Repository"):
            if github_token and source_repo and new_repo_name:
                try:
                    g = Github(github_token)
                    new_repo = create_repo(g, new_repo_name)
                    local_path = f"./temp_repo_{datetime.now().strftime('%Y%m%d_%H%M%S')}"
                    download_github_repo(source_repo, local_path)
                    push_to_github(local_path, new_repo, github_token)
                    st.success(f"Repository pushed successfully to {new_repo.html_url}")
                except Exception as e:
                    st.error(f"An error occurred: {str(e)}")
                finally:
                    if os.path.exists(local_path):
                        shutil.rmtree(local_path)
            else:
                st.error("Please provide all required GitHub information.")

    # Cosmos DB Operations
    st.subheader("☁️ Cosmos DB Operations")
    
    # Archive all data
    if st.button("📦 Archive All Cosmos DB Data"):
        download_link = archive_all_data(client)
        st.markdown(download_link, unsafe_allow_html=True)

    # Fetch and display all records
    st.subheader("📊 All Records")
    df = fetch_all_records()

    if df.empty:
        st.write("No records found in the database.")
    else:
        st.write("Records:")
        for index, row in df.iterrows():
            col1, col2, col3 = st.columns([5, 1, 1])

            with col1:
                st.write(f"ID: {row['id']}, Name: {row['name']}, Document: {row['document']}, "
                         f"Evaluation Text: {row['evaluationText']}, Evaluation Score: {row['evaluationScore']}")

            with col2:
                key = f"select_{row['id']}"
                if st.button(f"👉 Select", key=key):
                    st.session_state.selected_record = row.to_dict()

            with col3:
                if st.button(f"🗑️ Delete", key=f"delete_{row['id']}"):
                    success, message = delete_record(row['name'], row['id'])
                    if success:
                        st.success(message)
                        st.rerun()
                    else:
                        st.error(message)

    # Display selected record for editing
    if 'selected_record' in st.session_state and st.session_state.selected_record:
        selected_record = st.session_state.selected_record

        st.subheader(f"Editing Record - ID: {selected_record['id']}")

        updated_name = st.text_input("Name", value=selected_record['name'])
        updated_document = st.text_area("Document", value=selected_record['document'])
        updated_evaluation_text = st.text_area("Evaluation Text", value=selected_record['evaluationText'])
        updated_evaluation_score = st.text_input("Evaluation Score", value=str(selected_record['evaluationScore']))

        if st.button("💾 Save Changes"):
            updated_record = {
                "id": selected_record['id'],
                "name": updated_name,
                "document": updated_document,
                "evaluationText": updated_evaluation_text,
                "evaluationScore": updated_evaluation_score
            }

            success, message = update_record(updated_record)
            if success:
                st.success(message)
                st.session_state.selected_record = updated_record
            else:
                st.error(message)

    # Input fields for new record
    st.subheader("📝 Enter New Record Details")
    new_id = st.text_input("ID")
    new_name = st.text_input("Name")
    new_document = st.text_area("Document")
    new_evaluation_text = st.text_area("Evaluation Text")
    new_evaluation_score = st.text_input("Evaluation Score")

    col1, col2 = st.columns(2)

    with col1:
        if st.button("💾 Insert Record"):
            record = {
                "id": new_id,
                "name": new_name,
                "document": new_document,
                "evaluationText": new_evaluation_text,
                "evaluationScore": new_evaluation_score
            }

            success, response = insert_record(record)
            if success:
                st.success("✅ Record inserted successfully!")
                st.json(response)
            else:
                st.error(f"❌ Failed to insert record: {response}")
            st.rerun()

    with col2:
        if st.button("🔧 Call Procedure"):
            record = {
                "id": new_id,
                "name": new_name,
                "document": new_document,
                "evaluationText": new_evaluation_text,
                "evaluationScore": new_evaluation_score
            }

            success, response = call_stored_procedure(record)
            if success:
                st.success("✅ Stored procedure executed successfully!")
                st.json(response)
            else:
                st.error(f"❌ Failed to execute stored procedure: {response}")

    # Logout button
    if st.button("🚪 Logout"):
        st.session_state.logged_in = False
        st.session_state.selected_records.clear()
        st.session_state.selected_record = None
        st.rerun()

    # Display connection info
    st.sidebar.subheader("🔗 Connection Information")
    st.sidebar.text(f"Endpoint: {ENDPOINT}")
    st.sidebar.text(f"Subscription ID: {SUBSCRIPTION_ID}")
    st.sidebar.text(f"Database: {DATABASE_NAME}")
    st.sidebar.text(f"Container: {CONTAINER_NAME}")

#if __name__ == "__main__":
#    main()