use channels::emails::{reset_password, test_mail, welcome};

use super::{Error, Result};
use crate::SharedContext;

static STYLE: &str = include_str!("../assets/style.css");

pub async fn test_mail(msg: test_mail::Input, ctx: SharedContext) -> Result<()> {
    welcome(
        welcome::Input {
            login: model::Login::new("Test User"),
            email: msg.receiver,
        },
        ctx,
    )
    .await
}

#[derive(Debug, serde::Serialize)]
struct ResetPasswordContext {
    url: String,
    style: &'static str,
}

pub async fn reset_password(msg: reset_password::Input, ctx: SharedContext) -> Result<()> {
    let host = { ctx.config.lock().web().host() };
    let context = ResetPasswordContext {
        url: format!(
            "{host}/reset-password/{reset_token}",
            reset_token = msg.reset_token
        ),
        style: STYLE,
    };
    let html = ctx
        .template
        .render("reset-password", &context)
        .map_err(|e| {
            tracing::error!("{e:?}");
            Error::ResetPassTemplate
        })?;

    let smtp_from = ctx.config.lock().mail().smtp_from();
    let status = ctx
        .send_grid
        .send(
            sendgrid::Mail::new()
                .add_to((msg.email.as_str(), msg.login.as_str()).into())
                .add_from(&smtp_from)
                .add_subject("Reset Password")
                .add_html(html.as_str())
                .build(),
        )
        .await;

    tracing::debug!("{:?}", status);

    Ok(())
}

#[derive(Debug, serde::Serialize)]
struct WelcomeContext {
    login: model::Login,
    service_name: String,
    signature: String,
    style: &'static str,
}

pub async fn welcome(msg: welcome::Input, ctx: SharedContext) -> Result<()> {
    let (signature, service_name) = {
        let l = ctx.config.lock();
        let w = l.web();
        (w.signature(), w.service_name())
    };
    let context = WelcomeContext {
        login: msg.login.clone(),
        service_name,
        signature,
        style: STYLE,
    };
    let html = ctx.template.render("welcome", &context).map_err(|e| {
        tracing::error!("{e:?}");
        Error::ResetPassTemplate
    })?;

    let smtp_from = ctx.config.lock().mail().smtp_from().clone();
    let status = ctx
        .send_grid
        .send(
            sendgrid::Mail::new()
                .add_to((msg.email.as_str(), msg.login.as_str()).into())
                .add_from(&smtp_from)
                .add_subject("Welcome")
                .add_html(html.as_str())
                .build(),
        )
        .await;

    tracing::debug!("{:?}", status);

    Ok(())
}