use crate::app::AppState;
use crate::data::entities::{EntityHandle, WordData};
use crate::data_provider::words::{delete_word, update_word};
use crate::navigation::Page::PreviousPage;
use crate::navigation::{NavigatedPage, Page, RootMessage};
use crate::pages::word::WordMessage::*;
use crate::push_error;
use crate::push_error_task;
use crate::styling::*;
use iced::widget::button::danger;
use iced::widget::{button, column, row, rule, scrollable, space, text, text_input};
use iced::{Element, Fill, Task};
use parking_lot::Mutex;
use std::sync::Arc;

#[derive(Clone)]
pub struct WordState {
    state: AppState,
    handle: EntityHandle<WordData>,
}

impl NavigatedPage<WordMessage> for WordState {
    fn navigate(&mut self, message: &WordMessage) -> Option<Page> {
        if let Back = message {
            Some(PreviousPage)
        } else {
            None
        }
    }

    fn navigated(&mut self) {}
    fn update(&mut self, message: WordMessage) -> Task<RootMessage> {
        // match message {
        //     Back => {}
        //     Save => {
        //         let mut state = self.state.lock();
        //         state.dictionary[self.index] = self.word.clone();
        //
        //         if let Err(err) = update_word(&mut self.word, &state.connection) {
        //             return push_error_task!(err);
        //         }
        //         return Task::done(RootMessage::Word(Back));
        //     }
        //     Delete => {
        //         let mut state = self.state.lock();
        //         state.dictionary.remove(self.index);
        //         if let Err(err) = delete_word(&self.word, &state.connection) {
        //             return push_error_task!(err);
        //         }
        //         return Task::done(RootMessage::Word(Back));
        //     }
        //     SetTags(n) => self.word.tags = n,
        //     SetKey(n) => {
        //         self.word.key = n;
        //     }
        //     SetValue(n) => {
        //         self.word.value = n;
        //     }
        //     SetAdditional(key, value) => {
        //         self.word.additional.insert(key, value.clone());
        //     }
        //     AddAdditional(key) => {
        //         self.word.additional.insert(key, "".to_string());
        //     }
        //     RemoveAdditional(key) => {
        //         self.word.additional.remove(key.as_str());
        //     }
        // }
        Task::none()
    }

    fn view(&self) -> Element<'_, WordMessage> {
        // let mut fast_add = row![];
        // if !self.word.additional.contains_key("reading") {
        //     fast_add = fast_add.push(
        //         button("Чтение")
        //             .style(button::text)
        //             .on_press(AddAdditional("reading".to_string())),
        //     );
        // }
        // if !self.word.additional.contains_key("description") {
        //     fast_add = fast_add.push(
        //         button("Описание")
        //             .style(button::text)
        //             .on_press(AddAdditional("description".to_string())),
        //     );
        // }
        //
        // if !self.word.additional.contains_key("context") {
        //     fast_add = fast_add.push(
        //         button("В контексте")
        //             .style(button::text)
        //             .on_press(AddAdditional("context".to_string())),
        //     );
        // }
        //
        // let mut col = iced::widget::column![
        //     column![
        //         text!("Ключ"),
        //         text_input("key", &self.word.key).on_input(SetKey),
        //     ]
        //     .spacing(QUARTER_SPACING),
        //     column![
        //         text!("Значение"),
        //         text_input("value", &self.word.value).on_input(SetValue),
        //     ]
        //     .spacing(QUARTER_SPACING),
        //     column![
        //         text!("Теги"),
        //         text_input("tags", &self.word.tags).on_input(SetTags),
        //     ]
        //     .spacing(QUARTER_SPACING),
        //     rule::horizontal(2),
        //     scrollable(fast_add),
        // ];
        //
        // for more in &self.word.additional {
        //     col = col.push(self.get_view_for_more(more));
        // }
        //
        // back_overlay(
        //     column![
        //         col.spacing(DEFAULT_SPACING / 2.0).width(Fill).height(Fill),
        //         row![
        //             button("Сохранить").style(jl_button).on_press(Save),
        //             button("Удалить").style(danger).on_press(Delete),
        //         ]
        //         .spacing(DEFAULT_SPACING)
        //     ]
        //     .spacing(DEFAULT_SPACING)
        //     .into(),
        //     Back,
        // )
        space().into()
    }
}

impl WordState {
    pub fn new(handle: EntityHandle<WordData>, state: AppState) -> Self {
        Self{
            state,
            handle,
        }
    }
}

impl WordState {
    fn get_view_for_more(&self, value: (&String, &String)) -> Element<'_, WordMessage> {
        match value.0.as_str() {
            "reading" => self.reading_field(value.1),
            "description" => self.description_field(value.1),
            "context" => self.context_field(value.1),
            _ => self.additional_field(value.1, value.0.clone(), value.0.clone()),
        }
    }

    fn reading_field(&self, value: &str) -> Element<'_, WordMessage> {
        self.additional_field(value, "Чтение слова".to_string(), "reading".to_string())
    }

    fn description_field(&self, value: &str) -> Element<'_, WordMessage> {
        self.additional_field(value, "Описание".to_string(), "description".to_string())
    }

    fn context_field(&self, value: &str) -> Element<'_, WordMessage> {
        self.additional_field(value, "В контексте".to_string(), "context".to_string())
    }
    fn additional_field(&self, value: &str, name: String, id: String) -> Element<'_, WordMessage> {
        column![
            text!("{}", name),
            row![
                text_input(id.clone().as_str(), value)
                    .on_input({
                        let value = id.clone();
                        move |string| SetAdditional(value.clone(), string)
                    })
                    .width(Fill),
                button("-")
                    .on_press(RemoveAdditional(id.clone()))
                    .style(danger),
            ]
            .spacing(QUARTER_SPACING),
        ]
        .spacing(QUARTER_SPACING)
        .into()
    }
}

#[derive(Debug, Clone)]
pub enum WordMessage {
    Save,
    Back,
    Delete,
    SetTags(String),
    SetKey(String),
    SetValue(String),
    AddAdditional(String),
    RemoveAdditional(String),
    SetAdditional(String, String),
}