#[cxx_qt::bridge]
pub mod image_model {
    unsafe extern "C++" {
        include!(< QAbstractListModel >);
        type QAbstractListModel;
        include!("cxx-qt-lib/qhash.h");
        type QHash_i32_QByteArray =
            cxx_qt_lib::QHash<cxx_qt_lib::QHashPair_i32_QByteArray>;
        include!("cxx-qt-lib/qmap.h");
        type QMap_QString_QVariant =
            cxx_qt_lib::QMap<cxx_qt_lib::QMapPair_QString_QVariant>;
        include!("cxx-qt-lib/qvariant.h");
        type QVariant = cxx_qt_lib::QVariant;
        include!("cxx-qt-lib/qstring.h");
        type QString = cxx_qt_lib::QString;
        include!("cxx-qt-lib/qurl.h");
        type QUrl = cxx_qt_lib::QUrl;
        include!("cxx-qt-lib/qmodelindex.h");
        type QModelIndex = cxx_qt_lib::QModelIndex;
        include!("cxx-qt-lib/qvector.h");
        type QVector_i32 = cxx_qt_lib::QVector<i32>;
        // include!("cxx-qt-lib/qstringlist.h");
        // type QStringList = cxx_qt_lib::QStringList;
        // include!("cxx-qt-lib/qlist.h");
        // type QList_QString = cxx_qt_lib::QList<QString>;
    }

    #[qenum(ImageModel)]
    enum ImageRoles {
        Id,
        Path,
        Title,
    }

    #[auto_cxx_name]
    #[auto_rust_name]
    unsafe extern "RustQt" {
        #[qobject]
        #[base = QAbstractListModel]
        #[qml_element]
        #[qproperty(i32, count)]
        type ImageModel = super::ImageModelRust;

        #[inherit]
        #[qsignal]
        #[cxx_name = "dataChanged"]
        fn data_changed(
            self: Pin<&mut ImageModel>,
            top_left: &QModelIndex,
            bottom_right: &QModelIndex,
            roles: &QVector_i32,
        );

        #[qinvokable]
        fn clear(self: Pin<&mut ImageModel>);
        #[qinvokable]
        fn setup(self: Pin<&mut ImageModel>);
        #[qinvokable]
        fn remove_item(
            self: Pin<&mut ImageModel>,
            index: i32,
        ) -> bool;
        #[qinvokable]
        fn new_item(self: Pin<&mut ImageModel>, url: QUrl);
        #[qinvokable]
        fn update_title(
            self: Pin<&mut ImageModel>,
            index: i32,
            updated_title: QString,
        ) -> bool;
        #[qinvokable]
        fn update_file_path(
            self: Pin<&mut ImageModel>,
            index: i32,
            updated_file_path: QString,
        ) -> bool;
        #[qinvokable]
        fn get_item(
            self: Pin<&mut ImageModel>,
            index: i32,
        ) -> QMap_QString_QVariant;
        #[qinvokable]
        fn search(self: Pin<&mut ImageModel>, search_term: QString);
    }

    impl cxx_qt::Threading for ImageModel {}

    #[auto_cxx_name]
    #[auto_rust_name]
    unsafe extern "RustQt" {
        #[inherit]
        #[cxx_name = "beginInsertRows"]
        unsafe fn begin_insert_rows(
            self: Pin<&mut ImageModel>,
            parent: &QModelIndex,
            first: i32,
            last: i32,
        );

        #[inherit]
        #[cxx_name = "endInsertRows"]
        unsafe fn end_insert_rows(self: Pin<&mut ImageModel>);

        #[inherit]
        #[cxx_name = "beginRemoveRows"]
        unsafe fn begin_remove_rows(
            self: Pin<&mut ImageModel>,
            parent: &QModelIndex,
            first: i32,
            last: i32,
        );

        #[inherit]
        #[cxx_name = "beginMoveRows"]
        unsafe fn begin_move_rows(
            self: Pin<&mut ImageModel>,
            source_parent: &QModelIndex,
            source_first: i32,
            source_last: i32,
            destination_parent: &QModelIndex,
            destination_child: i32,
        ) -> bool;

        #[inherit]
        #[cxx_name = "endMoveRows"]
        unsafe fn end_move_rows(self: Pin<&mut ImageModel>);

        #[inherit]
        #[cxx_name = "endRemoveRows"]
        unsafe fn end_remove_rows(self: Pin<&mut ImageModel>);

        #[inherit]
        #[cxx_name = "beginResetModel"]
        unsafe fn begin_reset_model(self: Pin<&mut ImageModel>);

        #[inherit]
        #[cxx_name = "endResetModel"]
        unsafe fn end_reset_model(self: Pin<&mut ImageModel>);

        #[inherit]
        #[cxx_name = "canFetchMore"]
        fn can_fetch_more(
            self: &ImageModel,
            parent: &QModelIndex,
        ) -> bool;

        #[inherit]
        fn index(
            self: &ImageModel,
            row: i32,
            column: i32,
            parent: &QModelIndex,
        ) -> QModelIndex;

        #[qinvokable]
        #[cxx_override]
        fn data(
            self: &ImageModel,
            index: &QModelIndex,
            role: i32,
        ) -> QVariant;

        #[qinvokable]
        #[cxx_override]
        #[cxx_name = "roleNames"]
        fn role_names(self: &ImageModel) -> QHash_i32_QByteArray;

        #[qinvokable]
        #[cxx_override]
        #[cxx_name = "rowCount"]
        fn row_count(self: &ImageModel, _parent: &QModelIndex)
        -> i32;
    }
}

use cxx_qt::CxxQtType;
use cxx_qt_lib::{QModelIndex, QString, QUrl, QVariant};
use sqlx::{Connection, SqliteConnection, query, query_as};
use std::path::PathBuf;
use std::pin::Pin;
use tracing::{debug, error};

use self::image_model::{
    ImageRoles, QHash_i32_QByteArray, QMap_QString_QVariant,
    QVector_i32,
};

#[derive(Default, Clone, Debug)]
pub struct Image {
    id: i32,
    title: String,
    pub path: String,
}

#[derive(Debug)]
pub struct ImageModelRust {
    count: i32,
    highest_id: i32,
    images: Vec<Image>,
    inner_images: Vec<Image>,
    db: SqliteConnection,
}

impl Default for ImageModelRust {
    fn default() -> Self {
        Self {
            count: 0,
            highest_id: 0,
            images: vec![],
            inner_images: vec![],
            db: {
                let rt = tokio::runtime::Runtime::new().unwrap();
                let mut data = dirs::data_local_dir().unwrap();
                data.push("lumina");
                data.push("library-db.sqlite3");
                let mut db_url = String::from("sqlite://");
                db_url.push_str(data.to_str().unwrap());
                rt.block_on(async {
                    SqliteConnection::connect(&db_url)
                        .await
                        .expect("problems")
                })
            },
        }
    }
}

pub fn get_image(index: i32) -> color_eyre::Result<Image> {
    let rt = tokio::runtime::Runtime::new().unwrap();
    let mut db = {
        let mut data = dirs::data_local_dir().unwrap();
        data.push("lumina");
        data.push("library-db.sqlite3");
        let mut db_url = String::from("sqlite://");
        db_url.push_str(data.to_str().unwrap());
        rt.block_on(async {
            SqliteConnection::connect(&db_url)
                .await
                .expect("problems")
        })
    };
    rt.block_on(async {
        let result = query_as!(Image, r#"SELECT id as "id: i32", title as "title!", file_path as "path!" from images where id = ?"#, index).fetch_one(&mut db).await?;
        Ok(result)
    })
}

impl image_model::ImageModel {
    pub fn clear(mut self: Pin<&mut Self>) {
        unsafe {
            self.as_mut().begin_reset_model();
            self.as_mut().rust_mut().images.clear();
            self.as_mut().end_reset_model();
        }
    }

    pub fn setup(mut self: Pin<&mut Self>) {
        let rt = tokio::runtime::Runtime::new().unwrap();
        rt.block_on(async {
            let result = query_as!(Image, r#"SELECT id as "id: i32", title as "title!", file_path as "path!" from images"#).fetch_all(&mut self.as_mut().rust_mut().db).await;
            match result {
                Ok(i) => i.into_iter().for_each(|i| self.as_mut().add_image(i)),
                Err(e) => error!("There was an error in converting songs: {e}"),
            }
        });
    }

    pub fn remove_item(mut self: Pin<&mut Self>, index: i32) -> bool {
        if index < 0 || (index as usize) >= self.images.len() {
            return false;
        }
        let rt = tokio::runtime::Runtime::new().unwrap();

        rt.block_on(async {
            let result =
                query!("delete from images where id = ?", index)
                    .execute(&mut self.as_mut().rust_mut().db)
                    .await;
            match result {
                Ok(_i) => {
                    unsafe {
                        self.as_mut().begin_remove_rows(
                            &QModelIndex::default(),
                            index,
                            index,
                        );
                        self.as_mut()
                            .rust_mut()
                            .images
                            .remove(index as usize);
                        self.as_mut()
                            .rust_mut()
                            .inner_images
                            .remove(index as usize);
                        self.as_mut().end_remove_rows();
                    }
                    debug!("removed-item-at-index: {:?}", index);
                    true
                }
                Err(e) => {
                    error!("Cannot connect to database: {e}");
                    false
                }
            }
        });
        true
    }

    pub fn new_item(mut self: Pin<&mut Self>, url: QUrl) {
        println!("LETS INSERT THIS SUCKER!");
        let file_path = PathBuf::from(url.path().to_string());
        let name = file_path.file_stem().unwrap().to_str().unwrap();
        let image_id = self.rust().highest_id + 1;
        let image_title = QString::from(name);
        let image_path = url.to_qstring();

        if self.as_mut().add_item(image_id, image_title, image_path) {
            println!("filename: {:?}", name);
            self.as_mut().rust_mut().highest_id = image_id;
        } else {
            println!("Error in inserting item");
        }
    }

    fn add_item(
        mut self: Pin<&mut Self>,
        image_id: i32,
        image_title: QString,
        image_path: QString,
    ) -> bool {
        let rt = tokio::runtime::Runtime::new().unwrap();
        rt.block_on(async {
            let image_title = image_title.to_string();
            let image_path = image_path.to_string();
            let result = query!(r#"INSERT into images (id, title, file_path) VALUES (?, ?, ?)"#,
                                image_id,
                                image_title,
                                image_path)
                .execute(&mut self.as_mut().rust_mut().db).await;

            match result {
                Ok(_i) => {
                    let image = Image {
                        id: image_id,
                        title: image_title.to_string(),
                        path: image_path.to_string(),
                    };
                    self.as_mut().add_image(image);
                    debug!("{:?}", self.as_mut().images);
                    true
                }
                Err(e) => {
                    error!(
                        "Cannot connect to database: {e}"
                    );
                    false
                }
            }
        });
        true
    }

    fn add_image(mut self: Pin<&mut Self>, image: self::Image) {
        let index = self.as_ref().images.len() as i32;
        println!("{:?}", image);
        let count = self.as_ref().count;
        self.as_mut().set_count(count + 1);
        unsafe {
            self.as_mut().begin_insert_rows(
                &QModelIndex::default(),
                index,
                index,
            );
            self.as_mut().rust_mut().images.push(image.clone());
            self.as_mut().rust_mut().inner_images.push(image);
            self.as_mut().end_insert_rows();
        }
    }

    pub fn update_title(
        mut self: Pin<&mut Self>,
        index: i32,
        updated_title: QString,
    ) -> bool {
        let mut vector_roles = QVector_i32::default();
        vector_roles
            .append(self.as_ref().get_role_id(ImageRoles::Title));
        let model_index =
            &self.as_ref().index(index, 0, &QModelIndex::default());

        let rt = tokio::runtime::Runtime::new().unwrap();
        rt.block_on(async {
            let title = updated_title.to_string();
            let result = query!(
                "UPDATE images SET title = ? where id = ?",
                title,
                index
            )
            .execute(&mut self.as_mut().rust_mut().db)
            .await;
            match result {
                Ok(_i) => {
                    for image in self
                        .as_mut()
                        .rust_mut()
                        .images
                        .iter_mut()
                        .filter(|x| x.id == index)
                    {
                        image.title = title.clone();
                        debug!(
                            title = image.title,
                            title = title,
                            "updated image title"
                        );
                    }
                    self.as_mut().data_changed(
                        model_index,
                        model_index,
                        &vector_roles,
                    );
                    true
                }
                Err(e) => {
                    error!("Error connecting to db: {e}");
                    false
                }
            }
        });
        true
    }

    pub fn update_file_path(
        mut self: Pin<&mut Self>,
        index: i32,
        updated_path: QString,
    ) -> bool {
        let mut vector_roles = QVector_i32::default();
        vector_roles
            .append(self.as_ref().get_role_id(ImageRoles::Path));
        let model_index =
            &self.as_ref().index(index, 0, &QModelIndex::default());

        let rt = tokio::runtime::Runtime::new().unwrap();
        rt.block_on(async {
            let updated_path = updated_path.to_string();
            let result = query!(
                "UPDATE images SET file_path = ? where id = ?",
                updated_path,
                index
            )
            .execute(&mut self.as_mut().rust_mut().db)
            .await;
            match result {
                Ok(_i) => {
                    for image in self
                        .as_mut()
                        .rust_mut()
                        .images
                        .iter_mut()
                        .filter(|x| x.id == index)
                    {
                        image.path = updated_path.clone();
                        debug!(
                            title = image.title,
                            path = updated_path,
                            "updated image path"
                        );
                    }
                    self.as_mut().data_changed(
                        model_index,
                        model_index,
                        &vector_roles,
                    );
                    true
                }
                Err(e) => {
                    error!("Error connecting to db: {e}");
                    false
                }
            }
        });
        true
    }

    pub fn get_item(
        self: Pin<&mut Self>,
        index: i32,
    ) -> QMap_QString_QVariant {
        println!("{index}");
        let mut qvariantmap = QMap_QString_QVariant::default();
        let idx = self.index(index, 0, &QModelIndex::default());
        if !idx.is_valid() {
            return qvariantmap;
        }
        let role_names = self.as_ref().role_names();
        let role_names_iter = role_names.iter();
        if let Some(_image) = self.rust().images.get(index as usize) {
            for i in role_names_iter {
                qvariantmap.insert(
                    QString::from(&i.1.to_string()),
                    self.as_ref().data(&idx, *i.0),
                );
            }
        };
        qvariantmap
    }

    fn search(mut self: Pin<&mut Self>, search_term: QString) {
        let search_term = search_term.to_string().to_lowercase();
        debug!(search_term);
        let searched_images: Vec<Image> = self
            .inner_images
            .iter()
            .filter(|image| {
                image.title.to_lowercase().contains(&search_term)
            })
            .cloned()
            .collect();
        debug!(search = ?&searched_images);
        unsafe {
            self.as_mut().begin_reset_model();
            self.as_mut().rust_mut().images = searched_images;
            self.as_mut().end_reset_model();
        }
    }

    fn get_role_id(&self, role: ImageRoles) -> i32 {
        match role {
            ImageRoles::Id => 0,
            ImageRoles::Title => 1,
            ImageRoles::Path => 2,
            _ => 0,
        }
    }
}

// QAbstractListModel implementation
impl image_model::ImageModel {
    fn data(&self, index: &QModelIndex, role: i32) -> QVariant {
        let role = ImageRoles { repr: role };
        if let Some(image) = self.images.get(index.row() as usize) {
            return match role {
                ImageRoles::Id => QVariant::from(&image.id),
                ImageRoles::Title => {
                    QVariant::from(&QString::from(&image.title))
                }
                ImageRoles::Path => {
                    QVariant::from(&QString::from(&image.path))
                }
                _ => QVariant::default(),
            };
        }

        QVariant::default()
    }

    // Example of overriding a C++ virtual method and calling the base class implementation.

    // pub fn can_fetch_more(&self, parent: &QModelIndex) -> bool {
    //     self.base_can_fetch_more(parent)
    // }

    pub fn role_names(&self) -> QHash_i32_QByteArray {
        let mut roles = QHash_i32_QByteArray::default();
        roles.insert(
            ImageRoles::Id.repr,
            cxx_qt_lib::QByteArray::from("id"),
        );
        roles.insert(
            ImageRoles::Title.repr,
            cxx_qt_lib::QByteArray::from("title"),
        );
        roles.insert(
            ImageRoles::Path.repr,
            cxx_qt_lib::QByteArray::from("filePath"),
        );
        roles
    }

    pub fn row_count(&self, _parent: &QModelIndex) -> i32 {
        let cnt = self.rust().images.len() as i32;
        // self.as_mut().set_count(cnt);
        // println!("row count is {cnt}");
        cnt
    }
}