extern crate deltachat;

use std::ffi::{CStr, CString};
use std::ptr::NonNull;
use tempfile::tempdir;

use deltachat::constants::Event;
use deltachat::dc_chat::*;
use deltachat::dc_chatlist::*;
use deltachat::dc_configure::*;
use deltachat::dc_contact::*;
use deltachat::dc_context::*;
use deltachat::dc_job::{
    dc_perform_imap_fetch, dc_perform_imap_idle, dc_perform_imap_jobs, dc_perform_smtp_idle,
    dc_perform_smtp_jobs,
};
use deltachat::dc_lot::*;

fn cb(_ctx: *mut dc_context_t, event: Event, data1: usize, data2: usize) -> usize {
    println!("[{:?}]", event);

    match event {
        Event::HTTP_GET => {
            let url = unsafe { CStr::from_ptr(data1 as *const _).to_str().unwrap() };

            match reqwest::get(url) {
                Ok(ref mut res) => {
                    let c_res = CString::new(res.text().unwrap()).unwrap();
                    // need to use strdup to allocate the result with malloc
                    // so it can be `free`d later.
                    unsafe { libc::strdup(c_res.as_ptr()) as usize }
                }
                Err(err) => {
                    println!("failed to download: {}: {:?}", url, err);
                    0
                }
            }
        }
        Event::INFO | Event::WARNING | Event::ERROR | Event::ERROR_NETWORK => {
            println!(
                "  {}",
                unsafe { CStr::from_ptr(data2 as *const _) }
                    .to_str()
                    .unwrap()
            );
            0
        }
        _ => 0,
    }
}

struct Wrapper(NonNull<dc_context_t>);

unsafe impl std::marker::Send for Wrapper {}
unsafe impl std::marker::Sync for Wrapper {}

fn main() {
    unsafe {
        let ctx = dc_context_new(Some(cb), std::ptr::null_mut(), std::ptr::null_mut());
        let info = dc_get_info(ctx);
        let info_s = CStr::from_ptr(info);
        println!("info: {}", info_s.to_str().unwrap());

        let sendable_ctx = Wrapper(NonNull::new(ctx).unwrap());
        let t1 = std::thread::spawn(move || loop {
            dc_perform_imap_jobs(sendable_ctx.0.as_ptr());
            dc_perform_imap_fetch(sendable_ctx.0.as_ptr());
            dc_perform_imap_idle(sendable_ctx.0.as_ptr());
        });

        let sendable_ctx = Wrapper(NonNull::new(ctx).unwrap());
        let t2 = std::thread::spawn(move || loop {
            dc_perform_smtp_jobs(sendable_ctx.0.as_ptr());
            dc_perform_smtp_idle(sendable_ctx.0.as_ptr());
        });

        let dir = tempdir().unwrap();
        let dbfile = CString::new(dir.path().join("db.sqlite").to_str().unwrap()).unwrap();

        println!("opening database {:?}", dbfile);
        dc_open(ctx, dbfile.as_ptr(), std::ptr::null());

        println!("configuring");
        dc_set_config(
            ctx,
            CString::new("addr").unwrap().as_ptr(),
            CString::new("d@testrun.org").unwrap().as_ptr(),
        );
        dc_set_config(
            ctx,
            CString::new("mail_pw").unwrap().as_ptr(),
            CString::new("***").unwrap().as_ptr(),
        );
        dc_configure(ctx);

        std::thread::sleep_ms(4000);

        let email = CString::new("dignifiedquire@gmail.com").unwrap();
        println!("sending a message");
        let contact_id = dc_create_contact(ctx, std::ptr::null(), email.as_ptr());
        let chat_id = dc_create_chat_by_contact_id(ctx, contact_id);
        let msg_text = CString::new("Hi, here is my first message!").unwrap();
        dc_send_text_msg(ctx, chat_id, msg_text.as_ptr());

        println!("fetching chats..");
        let chats = dc_get_chatlist(ctx, 0, std::ptr::null(), 0);

        for i in 0..dc_chatlist_get_cnt(chats) {
            let summary = dc_chatlist_get_summary(chats, 0, std::ptr::null_mut());
            let text1 = dc_lot_get_text1(summary);
            let text2 = dc_lot_get_text2(summary);

            let text1_s = if !text1.is_null() {
                Some(CStr::from_ptr(text1))
            } else {
                None
            };
            let text2_s = if !text2.is_null() {
                Some(CStr::from_ptr(text2))
            } else {
                None
            };
            println!("chat: {} - {:?} - {:?}", i, text1_s, text2_s,);
            dc_lot_unref(summary);
        }
        dc_chatlist_unref(chats);

        // let msglist = dc_get_chat_msgs(ctx, chat_id, 0, 0);
        // for i in 0..dc_array_get_cnt(msglist) {
        //     let msg_id = dc_array_get_id(msglist, i);
        //     let msg = dc_get_msg(context, msg_id);
        //     let text = CStr::from_ptr(dc_msg_get_text(msg)).unwrap();
        //     println!("Message {}: {}\n", i + 1, text.to_str().unwrap());
        //     dc_msg_unref(msg);
        // }
        // dc_array_unref(msglist);

        t1.join().unwrap();
        t2.join().unwrap();
    }
}