use actix_web::{web, Result, Responder};
use tera::Tera;
use crate::utils::render_template;
use actix_session::Session;
use std::env;

/// Controller for handling home-related routes
pub struct HomeController;

impl HomeController {
    /// Renders the home page
    pub async fn index(tmpl: web::Data<Tera>, session: Session) -> Result<impl Responder> {
        let mut ctx = tera::Context::new();
        ctx.insert("active_page", "home");

        let is_gitea_flow_active = env::var("GITEA_CLIENT_ID")
            .ok()
            .filter(|s| !s.is_empty())
            .is_some();
        ctx.insert("gitea_enabled", &is_gitea_flow_active);

        // Add user to context if available
        if let Ok(Some(user_json)) = session.get::<String>("user") {
            // Keep the raw JSON for backward compatibility
            ctx.insert("user_json", &user_json);

            // Parse the JSON into a User object
            match serde_json::from_str::<crate::models::user::User>(&user_json) {
                Ok(user) => {
                    log::info!("Successfully parsed user: {:?}", user);
                    ctx.insert("user", &user);
                },
                Err(e) => {
                    log::error!("Failed to parse user JSON: {}", e);
                    log::error!("User JSON: {}", user_json);
                }
            }
        }

        render_template(&tmpl, "home/index.html", &ctx)
    }

    /// Renders the about page
    pub async fn about(tmpl: web::Data<Tera>, session: Session) -> Result<impl Responder> {
        let mut ctx = tera::Context::new();
        let is_gitea_flow_active = env::var("GITEA_CLIENT_ID")
            .ok()
            .filter(|s| !s.is_empty())
            .is_some();
        ctx.insert("gitea_enabled", &is_gitea_flow_active);
        ctx.insert("active_page", "about");

        // Add user to context if available
        if let Ok(Some(user_json)) = session.get::<String>("user") {
            // Keep the raw JSON for backward compatibility
            ctx.insert("user_json", &user_json);

            // Parse the JSON into a User object
            match serde_json::from_str::<crate::models::user::User>(&user_json) {
                Ok(user) => {
                    log::info!("Successfully parsed user: {:?}", user);
                    ctx.insert("user", &user);
                },
                Err(e) => {
                    log::error!("Failed to parse user JSON: {}", e);
                    log::error!("User JSON: {}", user_json);
                }
            }
        }

        render_template(&tmpl, "home/about.html", &ctx)
    }
}