//
use bytes::Bytes;
use kxio::{
    fs::FileHandle,
    net::{Net, ReqBuilder},
};
use reqwest::multipart;
use serde::de::DeserializeOwned;
use serde_json::json;

use crate::nextcloud::model::NextcloudStackTitle;
use crate::{
    api_result::APIResult,
    f,
    nextcloud::model::{
        Attachment, Board, Card, NextcloudBoardId, NextcloudCardId, NextcloudHostname,
        NextcloudLabelId, NextcloudPassword, NextcloudStackId, NextcloudUsername, Stack,
    },
    FullCtx,
};

pub(crate) struct DeckClient<'ctx> {
    ctx: &'ctx FullCtx,
    hostname: &'ctx NextcloudHostname,
    username: &'ctx NextcloudUsername,
    password: &'ctx NextcloudPassword,
}

// Uses the API described here: https://deck.readthedocs.io/en/stable/API/#cards
impl<'ctx> DeckClient<'ctx> {
    pub fn new(ctx: &'ctx FullCtx) -> Self {
        Self {
            ctx,
            hostname: &ctx.cfg.nextcloud.hostname,
            username: &ctx.cfg.nextcloud.username,
            password: &ctx.cfg.nextcloud.password,
        }
    }

    fn url(&self, path: impl Into<String>) -> String {
        f!(
            "{}/index.php/apps/deck/api/v1.0/{}",
            self.hostname,
            path.into()
        )
    }

    async fn request<T: for<'a> serde::Deserialize<'a>>(
        &self,
        url: impl Into<String>,
        custom: fn(&Net, String) -> ReqBuilder,
    ) -> APIResult<T> {
        APIResult::new(
            custom(&self.ctx.net, self.url(url))
                .basic_auth(self.username.as_str(), Some(self.password.as_str()))
                .header("accept", "application/json")
                .header("content-type", "application/json")
                .send()
                .await,
            &self.ctx.prt,
        )
        .await
    }

    async fn request_with_body<T: for<'a> serde::Deserialize<'a>>(
        &self,
        url: impl Into<String>,
        body: impl Into<Bytes>,
        custom: fn(&Net, String) -> ReqBuilder,
    ) -> APIResult<T> {
        APIResult::new(
            custom(&self.ctx.net, self.url(url))
                .basic_auth(self.username.as_str(), Some(self.password.as_str()))
                .header("accept", "application/json")
                .header("content-type", "application/json")
                .body(body)
                .send()
                .await,
            &self.ctx.prt,
        )
        .await
    }

    async fn request_with_form<T>(
        &self,
        path: String,
        // form_data: HashMap<String, String>,
        form: multipart::Form,
    ) -> APIResult<T>
    where
        T: DeserializeOwned,
    {
        // let form: multipart::Form = multipart::Form::new();
        // let full_path = self.ctx.fs.base().join(form_data.get("file").expect("file"));
        // e!(self.ctx.prt, "Uploading file: {}", full_path.display());
        // let form = form.file("file", Path::new(&full_path))
        //     .await
        //     .expect("read file");
        let request_builder = self
            .ctx
            .net
            .client()
            .post(self.url(&path))
            .basic_auth(self.username.as_str(), Some(self.password.as_str()))
            .header("accept", "application/json")
            // .form(&form_data);
            .multipart(form);
        // let data = request_builder.multipart();
        APIResult::new(
            match self.ctx.net.send(request_builder).await {
                Ok(response) => Ok(response),
                Err(err) => Err(err),
            },
            &self.ctx.prt,
        )
        .await
    }

    pub(crate) async fn get_boards(&self) -> APIResult<Vec<Board>> {
        self.request("boards", |net, url| net.get(url)).await
    }

    pub(crate) async fn get_board(&self, board_id: NextcloudBoardId) -> APIResult<Board> {
        self.request(f!("boards/{board_id}"), |net, url| net.get(url))
            .await
    }

    pub(crate) async fn get_stacks(&self, board_id: NextcloudBoardId) -> APIResult<Vec<Stack>> {
        self.request(f!("boards/{board_id}/stacks"), |net, url| net.get(url))
            .await
    }

    pub(crate) async fn get_stack(
        &self,
        board_id: NextcloudBoardId,
        stack_id: NextcloudStackId,
    ) -> APIResult<Stack> {
        self.request(f!("boards/{board_id}/stacks/{stack_id}"), |net, url| {
            net.get(url)
        })
        .await
    }

    pub(crate) async fn create_stack(
        &self,
        board_id: NextcloudBoardId,
        stack_title: &NextcloudStackTitle,
    ) -> APIResult<Stack> {
        self.request_with_body(
            f!("boards/{board_id}/stacks"),
            json!({
                "title": stack_title,
                "order": 999,
            })
            .to_string(),
            |net, url| net.post(url),
        )
        .await
    }

    pub(crate) async fn create_card(
        &self,
        board_id: NextcloudBoardId,
        stack_id: NextcloudStackId,
        title: &str,
        description: Option<&str>,
    ) -> APIResult<Card> {
        let mut body = json!({
             "title": title,
        });

        if let Some(desc) = &description {
            body["description"] = serde_json::Value::String(desc.to_string());
        }

        self.request_with_body(
            f!("boards/{board_id}/stacks/{stack_id}/cards"),
            body.to_string(),
            |net, url| net.post(url),
        )
        .await
    }

    pub(crate) async fn get_card(
        &self,
        board_id: NextcloudBoardId,
        stack_id: NextcloudStackId,
        card_id: NextcloudCardId,
    ) -> APIResult<Card> {
        self.request(
            f!("boards/{board_id}/stacks/{stack_id}/cards/{card_id}"),
            |net, url| net.get(url),
        )
        .await
    }

    pub(crate) async fn add_label_to_card(
        &self,
        board_id: NextcloudBoardId,
        stack_id: NextcloudStackId,
        card_id: NextcloudCardId,
        label_id: NextcloudLabelId,
    ) -> APIResult<()> {
        self.request_with_body(
            f!("boards/{board_id}/stacks/{stack_id}/cards/{card_id}/assignLabel"),
            json!({
                "labelId": label_id
            })
            .to_string(),
            |net, url| net.put(url),
        )
        .await
    }

    pub(crate) async fn add_attachment_to_card(
        &self,
        board_id: NextcloudBoardId,
        stack_id: NextcloudStackId,
        card_id: NextcloudCardId,
        file: FileHandle,
    ) -> APIResult<Attachment> {
        let form: multipart::Form = multipart::Form::new();
        let form = form.text("type", "file");
        let form = form
            .file("file", file.as_pathbuf())
            .await
            .expect("read file");
        self.request_with_form(
            // f!("apps/deck/cards/{card_id}/attachment"),
            f!("boards/{board_id}/stacks/{stack_id}/cards/{card_id}/attachments"),
            form,
        )
        .await
    }
}