use std::collections::BTreeMap;
use std::default::Default;

use directories_next::ProjectDirs;
use gtk::prelude::*;
use gtk::{LabelBuilder, ResponseType, Window};
use image::imageops::FilterType;
use img_hash::HashAlg;

use czkawka_core::common_messages::Messages;
use czkawka_core::duplicate::HashType;
use czkawka_core::fl;

use crate::gui_data::GuiData;
use crate::help_functions::get_dialog_box_child;
use crate::saving_loading::{load_configuration, reset_configuration, save_configuration};

pub fn connect_settings(gui_data: &GuiData) {
    // Connect button settings
    {
        let button_settings = gui_data.header.button_settings.clone();
        let window_settings = gui_data.settings.window_settings.clone();
        button_settings.connect_clicked(move |_| {
            window_settings.show();
        });

        let window_settings = gui_data.settings.window_settings.clone();

        window_settings.connect_delete_event(move |window, _| {
            window.hide();
            gtk::Inhibit(true)
        });
    }

    // Connect save configuration button
    {
        let upper_notebook = gui_data.upper_notebook.clone();
        let settings = gui_data.settings.clone();
        let text_view_errors = gui_data.text_view_errors.clone();
        let button_settings_save_configuration = gui_data.settings.button_settings_save_configuration.clone();
        button_settings_save_configuration.connect_clicked(move |_| {
            save_configuration(true, &upper_notebook, &settings, &text_view_errors);
        });
    }
    // Connect load configuration button
    {
        let upper_notebook = gui_data.upper_notebook.clone();
        let settings = gui_data.settings.clone();
        let text_view_errors = gui_data.text_view_errors.clone();
        let button_settings_load_configuration = gui_data.settings.button_settings_load_configuration.clone();
        let scrolled_window_errors = gui_data.scrolled_window_errors.clone();
        button_settings_load_configuration.connect_clicked(move |_| {
            load_configuration(true, &upper_notebook, &settings, &text_view_errors, &scrolled_window_errors);
        });
    }
    // Connect reset configuration button
    {
        let upper_notebook = gui_data.upper_notebook.clone();
        let settings = gui_data.settings.clone();
        let text_view_errors = gui_data.text_view_errors.clone();
        let button_settings_reset_configuration = gui_data.settings.button_settings_reset_configuration.clone();
        button_settings_reset_configuration.connect_clicked(move |_| {
            reset_configuration(true, &upper_notebook, &settings, &text_view_errors);
        });
    }
    // Connect button for opening cache
    {
        let button_settings_open_cache_folder = gui_data.settings.button_settings_open_cache_folder.clone();
        button_settings_open_cache_folder.connect_clicked(move |_| {
            if let Some(proj_dirs) = ProjectDirs::from("pl", "Qarmin", "Czkawka") {
                let cache_dir = proj_dirs.cache_dir();
                open::that_in_background(cache_dir);
            }
        });
    }
    // Connect button for opening settings
    {
        let button_settings_open_settings_folder = gui_data.settings.button_settings_open_settings_folder.clone();
        button_settings_open_settings_folder.connect_clicked(move |_| {
            if let Some(proj_dirs) = ProjectDirs::from("pl", "Qarmin", "Czkawka") {
                let config_dir = proj_dirs.config_dir();
                open::that_in_background(config_dir);
            }
        });
    }
    // Connect clear cache methods
    {
        {
            let button_settings_duplicates_clear_cache = gui_data.settings.button_settings_duplicates_clear_cache.clone();
            let settings_window = gui_data.settings.window_settings.clone();
            let text_view_errors = gui_data.text_view_errors.clone();
            let entry_settings_cache_file_minimal_size = gui_data.settings.entry_settings_cache_file_minimal_size.clone();

            button_settings_duplicates_clear_cache.connect_clicked(move |_| {
                let dialog = create_clear_cache_dialog(fl!("cache_clear_duplicates_title"), &settings_window);
                dialog.show_all();

                let text_view_errors = text_view_errors.clone();
                let entry_settings_cache_file_minimal_size = entry_settings_cache_file_minimal_size.clone();

                dialog.connect_response(move |dialog, response_type| {
                    if response_type == ResponseType::Ok {
                        let mut messages: Messages = Messages::new();
                        for use_prehash in [true, false] {
                            for type_of_hash in [HashType::Xxh3, HashType::Blake3, HashType::Crc32].iter() {
                                if let Some(cache_entries) = czkawka_core::duplicate::load_hashes_from_file(&mut messages, true, type_of_hash, use_prehash) {
                                    let mut hashmap_to_save: BTreeMap<String, czkawka_core::duplicate::FileEntry> = Default::default();
                                    for (_, vec_file_entry) in cache_entries {
                                        for file_entry in vec_file_entry {
                                            hashmap_to_save.insert(file_entry.path.to_string_lossy().to_string(), file_entry);
                                        }
                                    }
                                    czkawka_core::duplicate::save_hashes_to_file(
                                        &hashmap_to_save,
                                        &mut messages,
                                        type_of_hash,
                                        use_prehash,
                                        entry_settings_cache_file_minimal_size.text().as_str().parse::<u64>().unwrap_or(2 * 1024 * 1024),
                                    )
                                }
                            }

                            messages.messages.push(fl!("cache_properly_cleared"));
                            text_view_errors.buffer().unwrap().set_text(messages.create_messages_text().as_str());
                        }
                    }
                    dialog.close();
                });
            });
        }
        {
            let button_settings_similar_images_clear_cache = gui_data.settings.button_settings_similar_images_clear_cache.clone();
            let settings_window = gui_data.settings.window_settings.clone();
            let text_view_errors = gui_data.text_view_errors.clone();

            button_settings_similar_images_clear_cache.connect_clicked(move |_| {
                let dialog = create_clear_cache_dialog(fl!("cache_clear_similar_images_title"), &settings_window);
                dialog.show_all();

                let text_view_errors = text_view_errors.clone();

                dialog.connect_response(move |dialog, response_type| {
                    if response_type == ResponseType::Ok {
                        let mut messages: Messages = Messages::new();
                        for hash_size in [8, 16, 32, 64].iter() {
                            for image_filter in [
                                FilterType::Lanczos3,
                                FilterType::CatmullRom,
                                FilterType::Gaussian,
                                FilterType::Nearest,
                                FilterType::Triangle,
                            ]
                            .iter()
                            {
                                for hash_alg in [HashAlg::Blockhash, HashAlg::Gradient, HashAlg::DoubleGradient, HashAlg::VertGradient, HashAlg::Mean].iter() {
                                    if let Some(cache_entries) = czkawka_core::similar_images::load_hashes_from_file(&mut messages, true, *hash_size, *hash_alg, *image_filter) {
                                        czkawka_core::similar_images::save_hashes_to_file(&cache_entries, &mut messages, *hash_size, *hash_alg, *image_filter);
                                    }
                                }
                            }
                        }

                        messages.messages.push(fl!("cache_properly_cleared"));
                        text_view_errors.buffer().unwrap().set_text(messages.create_messages_text().as_str());
                    }
                    dialog.close();
                });
            });
        }
        {
            let button_settings_similar_videos_clear_cache = gui_data.settings.button_settings_similar_videos_clear_cache.clone();
            let settings_window = gui_data.settings.window_settings.clone();
            let text_view_errors = gui_data.text_view_errors.clone();

            button_settings_similar_videos_clear_cache.connect_clicked(move |_| {
                let dialog = create_clear_cache_dialog(fl!("cache_clear_similar_videos_title"), &settings_window);
                dialog.show_all();

                let text_view_errors = text_view_errors.clone();

                dialog.connect_response(move |dialog, response_type| {
                    if response_type == ResponseType::Ok {
                        let mut messages: Messages = Messages::new();
                        if let Some(cache_entries) = czkawka_core::similar_videos::load_hashes_from_file(&mut messages, true) {
                            czkawka_core::similar_videos::save_hashes_to_file(&cache_entries, &mut messages);
                        }

                        messages.messages.push(fl!("cache_properly_cleared"));
                        text_view_errors.buffer().unwrap().set_text(messages.create_messages_text().as_str());
                    }
                    dialog.close();
                });
            });
        }
    }
}

fn create_clear_cache_dialog(title_str: String, window_settings: &Window) -> gtk::Dialog {
    let dialog = gtk::Dialog::builder().title(&title_str).transient_for(window_settings).build();
    dialog.add_button(&fl!("general_ok_button"), ResponseType::Ok);
    dialog.add_button(&fl!("general_close_button"), ResponseType::Cancel);

    let label = LabelBuilder::new().label(&fl!("cache_clear_message_label_1")).build();
    let label2 = LabelBuilder::new().label(&fl!("cache_clear_message_label_2")).build();
    let label3 = LabelBuilder::new().label(&fl!("cache_clear_message_label_3")).build();
    let label4 = LabelBuilder::new().label(&fl!("cache_clear_message_label_4")).build();

    let internal_box = get_dialog_box_child(&dialog);
    internal_box.add(&label);
    internal_box.add(&label2);
    internal_box.add(&label3);
    internal_box.add(&label4);
    dialog
}