// Copyright 2023-2024 Hugo Osvaldo Barrera
//
// SPDX-License-Identifier: EUPL-1.2

//! An example of some basic usage of the `CalDavClient` type.
//!
//! Usage:
//!
//!     cargo run --example=find_calendars https://example.com user@example.com MYPASSWORD
//!     cargo run --example=find_calendars $SERVER_URL         $USERNAME        $PASSWORD
//!
//! Example output (with $1 = "https://fastmail.com"):
//!
//! ```
//! Resolved server URL to: https://d277161.caldav.fastmail.com/dav/calendars
//! found 1 calendars...
//! 📅 name: Some("Calendar"), colour: Some("#3a429c"), path: "/dav/calendars/user/vdirsyncer@fastmail.com/cc396171-0227-4e1c-b5ee-d42b5e17d533/"
//! Href and Etag for components in calendar:
//! - /dav/calendars/user/vdirsyncer@fastmail.com/cc396171-0227-4e1c-b5ee-d42b5e17d533/395b00a0-eebc-40fd-a98e-176a06367c82.ics, "e7577ff2b0924fe8e9a91d3fb2eb9072598bf9fb"
//! ```
use http::Uri;
use hyper_rustls::HttpsConnectorBuilder;
use libdav::auth::Auth;
use libdav::dav::WebDavClient;
use libdav::{names, CalDavClient};

#[tokio::main(flavor = "current_thread")]
async fn main() {
    let mut arguments = std::env::args();
    arguments
        .next()
        .expect("binary has been called with a name");
    let base_url: Uri = arguments
        .next()
        .expect("$1 is defined")
        .parse()
        .expect("$1 is a valid URL");
    let username = arguments.next().expect("$2 is a valid username");
    let password = arguments.next().expect("$3 is a valid password").into();

    let https = HttpsConnectorBuilder::new()
        .with_native_roots()
        .expect("native TLS roots should be available")
        .https_or_http()
        .enable_http1()
        .build();
    let auth = Auth::Basic {
        username,
        password: Some(password),
    };
    let webdav = WebDavClient::new(base_url, auth, https);
    let caldav_client = CalDavClient::new_via_bootstrap(webdav).await.unwrap();

    let urls = match caldav_client.find_current_user_principal().await.unwrap() {
        Some(principal) => {
            let home_set = caldav_client
                .find_calendar_home_set(&principal)
                .await
                .unwrap();
            if home_set.is_empty() {
                vec![caldav_client.base_url().clone()]
            } else {
                home_set
            }
        }
        None => vec![caldav_client.base_url().clone()],
    };

    for url in urls {
        let calendars = caldav_client.find_calendars(&url).await.unwrap();

        println!("found {} calendars...", calendars.len());

        for calendar in calendars {
            let name = caldav_client
                .get_property(&calendar.href, &names::DISPLAY_NAME)
                .await
                .unwrap();
            let color = caldav_client
                .get_property(&calendar.href, &names::CALENDAR_COLOUR)
                .await
                .unwrap();
            println!(
                "📅 name: {name:?}, colour: {color:?}, path: {:?}, etag: {:?}",
                &calendar.href, &calendar.etag
            );
            let items = caldav_client
                .list_resources(&calendar.href)
                .await
                .unwrap()
                .into_iter()
                .filter(|i| !i.details.resource_type.is_collection);
            for item in items {
                println!("   {}, {}", item.href, item.details.etag.unwrap());
            }
        }
    }
}