#[allow(unused_imports)]
use czkawka_core::{duplicate, empty_folder};
use humansize::{file_size_opts as options, FileSize};

extern crate gtk;
use chrono::NaiveDateTime;
use czkawka_core::duplicate::CheckingMethod;
use czkawka_core::empty_folder::EmptyFolder;
use duplicate::DuplicateFinder;
use gtk::prelude::*;
use gtk::{Builder, TreeView, TreeViewColumn};
use std::cell::RefCell;
use std::collections::HashMap;
use std::rc::Rc;
use std::time::UNIX_EPOCH;

#[derive(Debug)]
#[repr(i32)]
enum ColumnsDuplicate {
    Name = 0,
    Path,
    Modification,
}

fn main() {
    gtk::init().expect("Failed to initialize GTK.");

    // Loading glade file content and build with it help UI
    let glade_src = include_str!("../czkawka.glade");
    let builder = Builder::from_string(glade_src);

    // Windows
    let main_window: gtk::Window = builder.get_object("main_window").unwrap();
    main_window.show_all();

    ////////////////////////////////////////////////////////////////////////////////////////////////
    // State

    // Buttons State

    let shared_buttons: Rc<RefCell<_>> = Rc::new(RefCell::new(HashMap::<String, HashMap<String, bool>>::new()));
    shared_buttons.borrow_mut().clear();

    for i in ["duplicate", "empty_folder"].iter() {
        let mut temp_hashmap: HashMap<String, bool> = Default::default();
        for j in ["search", "stop", "resume", "pause", "select", "delete", "save"].iter() {
            if *j == "search" {
                temp_hashmap.insert(j.to_string(), true);
            } else {
                temp_hashmap.insert(j.to_string(), false);
            }
        }
        shared_buttons.borrow_mut().insert(i.to_string(), temp_hashmap);
    }
    // Duplicate Finder state

    let shared_duplication_state: Rc<RefCell<_>> = Rc::new(RefCell::new(DuplicateFinder::new()));
    let shared_empty_folders_state: Rc<RefCell<_>> = Rc::new(RefCell::new(EmptyFolder::new()));

    ////////////////////////////////////////////////////////////////////////////////////////////////
    // GUI Notepad Buttons

    // GUI Duplicate Entry
    let minimal_size_entry: gtk::Entry = builder.get_object("duplicate_minimal_size").unwrap();

    // GUI Buttons
    let buttons_search: gtk::Button = builder.get_object("buttons_search").unwrap();
    let buttons_stop: gtk::Button = builder.get_object("buttons_stop").unwrap();
    let buttons_resume: gtk::Button = builder.get_object("buttons_resume").unwrap();
    let buttons_pause: gtk::Button = builder.get_object("buttons_pause").unwrap();
    let buttons_select: gtk::Button = builder.get_object("buttons_select").unwrap();
    let buttons_delete: gtk::Button = builder.get_object("buttons_delete").unwrap();
    let buttons_save: gtk::Button = builder.get_object("buttons_save").unwrap();

    // Not used buttons for now
    buttons_stop.hide();
    buttons_resume.hide();
    buttons_pause.hide();
    buttons_select.hide();

    // Notebooks
    let notebook_chooser_tool: gtk::Notebook = builder.get_object("notebook_chooser_tool").unwrap();
    let mut notebook_chooser_tool_children_names: Vec<String> = Vec::new();

    for i in notebook_chooser_tool.get_children() {
        notebook_chooser_tool_children_names.push(i.get_buildable_name().unwrap().to_string());
        println!("{}", i.get_buildable_name().unwrap().to_string());
    }

    // Entry
    let info_entry: gtk::Entry = builder.get_object("info_entry").unwrap(); // To show default

    // Scrolled window
    let scrolled_window_duplicate_finder: gtk::ScrolledWindow = builder.get_object("scrolled_window_duplicate_finder").unwrap();
    let scrolled_window_empty_folder_finder: gtk::ScrolledWindow = builder.get_object("scrolled_window_empty_folder_finder").unwrap();

    {
        // Set starting information in bottom panel

        info_entry.set_text("Duplicated Files");

        // Disable all unused buttons
        buttons_search.show();
        buttons_save.hide();
        buttons_delete.hide();
    }
    {
        // Connect Notebook Tabs
        {
            let shared_buttons = shared_buttons.clone();

            let buttons_search = buttons_search.clone();
            let buttons_stop = buttons_stop.clone();
            let buttons_resume = buttons_resume.clone();
            let buttons_pause = buttons_pause.clone();
            let buttons_select = buttons_select.clone();
            let buttons_delete = buttons_delete.clone();
            let buttons_save = buttons_save.clone();

            let notebook_chooser_tool_children_names = notebook_chooser_tool_children_names.clone();

            notebook_chooser_tool.connect_switch_page(move |_, _, number| {
                let page: &str;
                match notebook_chooser_tool_children_names.get(number as usize).unwrap().as_str() {
                    "notebook_duplicate_finder_label" => {
                        page = "duplicate";
                    }
                    "scrolled_window_empty_folder_finder" => {
                        page = "empty_folder";
                    }
                    e => {
                        panic!("Not existent page {}", e);
                    }
                };

                if *shared_buttons.borrow_mut().get_mut(page).unwrap().get_mut("search").unwrap() == true {
                    buttons_search.show();
                } else {
                    buttons_search.hide();
                }
                if *shared_buttons.borrow_mut().get_mut(page).unwrap().get_mut("stop").unwrap() == true {
                    buttons_stop.show();
                } else {
                    buttons_stop.hide();
                }
                if *shared_buttons.borrow_mut().get_mut(page).unwrap().get_mut("resume").unwrap() == true {
                    buttons_resume.show();
                } else {
                    buttons_resume.hide();
                }
                if *shared_buttons.borrow_mut().get_mut(page).unwrap().get_mut("pause").unwrap() == true {
                    buttons_pause.show();
                } else {
                    buttons_pause.hide();
                }
                if *shared_buttons.borrow_mut().get_mut(page).unwrap().get_mut("select").unwrap() == true {
                    buttons_select.show();
                } else {
                    buttons_select.hide();
                }
                if *shared_buttons.borrow_mut().get_mut(page).unwrap().get_mut("delete").unwrap() == true {
                    buttons_delete.show();
                } else {
                    buttons_delete.hide();
                }
                if *shared_buttons.borrow_mut().get_mut(page).unwrap().get_mut("save").unwrap() == true {
                    buttons_save.show();
                } else {
                    buttons_save.hide();
                }
            });
        }

        // Connect Buttons

        assert!(notebook_chooser_tool_children_names.contains(&"notebook_duplicate_finder_label".to_string()));
        assert!(notebook_chooser_tool_children_names.contains(&"scrolled_window_empty_folder_finder".to_string()));
        buttons_search.connect_clicked(move |_| {
            match notebook_chooser_tool_children_names.get(notebook_chooser_tool.get_current_page().unwrap() as usize).unwrap().as_str() {
                "notebook_duplicate_finder_label" => {
                    // Find duplicates
                    // TODO Change to proper value
                    let mut df = DuplicateFinder::new();
                    let check_method = duplicate::CheckingMethod::HASH;
                    df.set_include_directory("/home/rafal/Pulpit/AAA".to_owned());
                    df.set_exclude_directory("/rafa/".to_owned());
                    df.set_excluded_items("".to_owned());
                    df.set_allowed_extensions("".to_owned());
                    df.set_min_file_size(1000);
                    df.set_check_method(check_method.clone());
                    df.set_delete_method(duplicate::DeleteMethod::None);
                    df.find_duplicates();
                    let information = df.get_information();

                    let duplicates_number: usize;
                    let duplicates_size: u64;
                    let duplicates_group: usize;

                    match check_method {
                        duplicate::CheckingMethod::HASH => {
                            duplicates_number = information.number_of_duplicated_files_by_hash;
                            duplicates_size = information.lost_space_by_hash;
                            duplicates_group = information.number_of_groups_by_hash;
                        }
                        duplicate::CheckingMethod::SIZE => {
                            duplicates_number = information.number_of_duplicated_files_by_size;
                            duplicates_size = information.lost_space_by_size;
                            duplicates_group = information.number_of_groups_by_size;
                        }
                        duplicate::CheckingMethod::NONE => {
                            panic!();
                        }
                    }

                    info_entry.set_text(format!("Found {} duplicates files in {} groups which took {}.", duplicates_number, duplicates_group, duplicates_size.file_size(options::BINARY).unwrap()).as_str());

                    // Create GUI
                    {
                        // Remove scrolled window from before - BUG - when doing it when view is scrolled, then scroll button disappears
                        for i in &scrolled_window_duplicate_finder.get_children() {
                            scrolled_window_duplicate_finder.remove(i);
                        }

                        let col_types: [glib::types::Type; 3] = [glib::types::Type::String, glib::types::Type::String, glib::types::Type::String];
                        let list_store: gtk::ListStore = gtk::ListStore::new(&col_types);

                        let mut tree_view_duplicate_finder: gtk::TreeView = TreeView::with_model(&list_store);

                        create_tree_view_duplicates(&mut tree_view_duplicate_finder);

                        let col_indices = [0, 1, 2];

                        match check_method {
                            CheckingMethod::HASH => {
                                let hashmap = df.get_files_sorted_by_hash();

                                for (size, vectors_vector) in hashmap {
                                    for vector in vectors_vector {
                                        let values: [&dyn ToValue; 3] = [
                                            &(vector.len().to_string() + " x " + size.to_string().as_str()),
                                            &("(".to_string() + ((vector.len() - 1) as u64 * *size as u64).to_string().as_str() + ")"),
                                            &"Bytes lost".to_string(),
                                        ];
                                        list_store.set(&list_store.append(), &col_indices, &values);
                                        for entry in vector {
                                            let path = &entry.path;
                                            let index = path.rfind('/').unwrap();

                                            let values: [&dyn ToValue; 3] = [
                                                &(path[index + 1..].to_string()),
                                                &(path[..index].to_string()),
                                                &(NaiveDateTime::from_timestamp(entry.modified_date.duration_since(UNIX_EPOCH).expect("Invalid file date").as_secs() as i64, 0).to_string()),
                                            ];
                                            list_store.set(&list_store.append(), &col_indices, &values);
                                        }
                                    }
                                }
                            }
                            CheckingMethod::SIZE => {
                                let hashmap = df.get_files_sorted_by_size();

                                for (size, vector) in hashmap {
                                    let values: [&dyn ToValue; 3] = [
                                        &(vector.len().to_string() + " x " + size.to_string().as_str()),
                                        &("(".to_string() + ((vector.len() - 1) as u64 * *size as u64).to_string().as_str() + ")"),
                                        &"Bytes lost".to_string(),
                                    ];
                                    list_store.set(&list_store.append(), &col_indices, &values);
                                    for entry in vector {
                                        let path = &entry.path;
                                        let index = path.rfind('/').unwrap();

                                        let values: [&dyn ToValue; 3] = [
                                            &(path[index + 1..].to_string()),
                                            &(path[..index].to_string()),
                                            &(NaiveDateTime::from_timestamp(entry.modified_date.duration_since(UNIX_EPOCH).expect("Invalid file date").as_secs() as i64, 0).to_string()),
                                        ];
                                        list_store.set(&list_store.append(), &col_indices, &values);
                                    }
                                }
                            }
                            CheckingMethod::NONE => {
                                panic!();
                            }
                        }

                        scrolled_window_duplicate_finder.add(&tree_view_duplicate_finder);
                        scrolled_window_duplicate_finder.show_all();
                    }

                    // Set state
                    {
                        *shared_duplication_state.borrow_mut() = df;

                        if duplicates_size > 0 {
                            buttons_save.show();
                            buttons_delete.show();
                            *shared_buttons.borrow_mut().get_mut("duplicate").unwrap().get_mut("save").unwrap() = true;
                            *shared_buttons.borrow_mut().get_mut("duplicate").unwrap().get_mut("delete").unwrap() = true;
                        } else {
                            buttons_save.hide();
                            buttons_delete.hide();
                            *shared_buttons.borrow_mut().get_mut("duplicate").unwrap().get_mut("save").unwrap() = false;
                            *shared_buttons.borrow_mut().get_mut("duplicate").unwrap().get_mut("delete").unwrap() = false;
                        }
                    }
                }
                "scrolled_window_empty_folder_finder" => {
                    // Find empty folders
                    // TODO Change to proper value
                    let mut ef = EmptyFolder::new();

                    ef.set_include_directory("/home/rafal/Pulpit".to_string());
                    ef.set_delete_folder(false);
                    ef.find_empty_folders();

                    let information = ef.get_information();

                    let empty_folder_number: usize = information.number_of_empty_folders;

                    info_entry.set_text(format!("Found {} empty folders.", empty_folder_number).as_str());

                    // Create GUI
                    {
                        // Remove scrolled window from before - BUG - when doing it when view is scrolled, then scroll button disappears
                        for i in &scrolled_window_empty_folder_finder.get_children() {
                            scrolled_window_empty_folder_finder.remove(i);
                        }

                        let col_types: [glib::types::Type; 3] = [glib::types::Type::String, glib::types::Type::String, glib::types::Type::String];
                        let list_store: gtk::ListStore = gtk::ListStore::new(&col_types);

                        let mut tree_view_empty_folder_finder: gtk::TreeView = TreeView::with_model(&list_store);

                        create_tree_view_empty_folders(&mut tree_view_empty_folder_finder);

                        let col_indices = [0, 1, 2];

                        let hashmap = ef.get_empty_folder_list();

                        for (name, entry) in hashmap {
                            let name: String = name[..(name.len() - 1)].to_string();
                            let index = name.rfind('/').unwrap();
                            let values: [&dyn ToValue; 3] = [
                                &(name[index + 1..].to_string()),
                                &(name[..index].to_string()),
                                &(NaiveDateTime::from_timestamp(entry.modified_date.duration_since(UNIX_EPOCH).expect("Invalid file date").as_secs() as i64, 0).to_string()),
                            ];
                            list_store.set(&list_store.append(), &col_indices, &values);
                        }

                        scrolled_window_empty_folder_finder.add(&tree_view_empty_folder_finder);
                        scrolled_window_empty_folder_finder.show_all();
                    }

                    // Set state
                    {
                        *shared_empty_folders_state.borrow_mut() = ef;

                        if empty_folder_number > 0 {
                            buttons_save.show();
                            buttons_delete.show();
                            *shared_buttons.borrow_mut().get_mut("empty_folder").unwrap().get_mut("save").unwrap() = true;
                            *shared_buttons.borrow_mut().get_mut("empty_folder").unwrap().get_mut("delete").unwrap() = true;
                        } else {
                            buttons_save.hide();
                            buttons_delete.hide();
                            *shared_buttons.borrow_mut().get_mut("empty_folder").unwrap().get_mut("save").unwrap() = false;
                            *shared_buttons.borrow_mut().get_mut("empty_folder").unwrap().get_mut("delete").unwrap() = false;
                        }
                    }
                }
                e => panic!("Not existent {}", e),
            }
        });
    }

    // Quit the program when X in main window was clicked
    main_window.connect_delete_event(|_, _| {
        gtk::main_quit();
        Inhibit(false)
    });

    // We start the gtk main loop.
    gtk::main();
}
pub fn create_tree_view_duplicates(tree_view_duplicate_finder: &mut gtk::TreeView) {
    let renderer = gtk::CellRendererText::new();
    let name_column: gtk::TreeViewColumn = TreeViewColumn::new();
    name_column.pack_start(&renderer, true);
    name_column.set_title("File Name");
    name_column.set_resizable(true);
    name_column.set_min_width(50);
    name_column.add_attribute(&renderer, "text", ColumnsDuplicate::Name as i32);
    tree_view_duplicate_finder.append_column(&name_column);

    let renderer = gtk::CellRendererText::new();
    let path_column: gtk::TreeViewColumn = TreeViewColumn::new();
    path_column.pack_start(&renderer, true);
    path_column.set_title("Path");
    path_column.set_resizable(true);
    path_column.set_min_width(100);
    path_column.add_attribute(&renderer, "text", ColumnsDuplicate::Path as i32);
    tree_view_duplicate_finder.append_column(&path_column);

    let renderer = gtk::CellRendererText::new();
    let modification_date_column: gtk::TreeViewColumn = TreeViewColumn::new();
    modification_date_column.pack_start(&renderer, true);
    modification_date_column.set_title("Modification Date");
    modification_date_column.set_resizable(true);
    modification_date_column.set_min_width(100);
    modification_date_column.add_attribute(&renderer, "text", ColumnsDuplicate::Modification as i32);
    tree_view_duplicate_finder.append_column(&modification_date_column);

    tree_view_duplicate_finder.set_vexpand(true);
}

pub fn create_tree_view_empty_folders(tree_view_empty_folder_finder: &mut gtk::TreeView) {
    let renderer = gtk::CellRendererText::new();
    let name_column: gtk::TreeViewColumn = TreeViewColumn::new();
    name_column.pack_start(&renderer, true);
    name_column.set_title("Folder Name");
    name_column.set_resizable(true);
    name_column.set_min_width(50);
    name_column.add_attribute(&renderer, "text", ColumnsDuplicate::Name as i32);
    tree_view_empty_folder_finder.append_column(&name_column);

    let renderer = gtk::CellRendererText::new();
    let path_column: gtk::TreeViewColumn = TreeViewColumn::new();
    path_column.pack_start(&renderer, true);
    path_column.set_title("Path");
    path_column.set_resizable(true);
    path_column.set_min_width(100);
    path_column.add_attribute(&renderer, "text", ColumnsDuplicate::Path as i32);
    tree_view_empty_folder_finder.append_column(&path_column);

    let renderer = gtk::CellRendererText::new();
    let modification_date_column: gtk::TreeViewColumn = TreeViewColumn::new();
    modification_date_column.pack_start(&renderer, true);
    modification_date_column.set_title("Modification Date");
    modification_date_column.set_resizable(true);
    modification_date_column.set_min_width(100);
    modification_date_column.add_attribute(&renderer, "text", ColumnsDuplicate::Modification as i32);
    tree_view_empty_folder_finder.append_column(&modification_date_column);

    tree_view_empty_folder_finder.set_vexpand(true);
}