about summary refs log tree commit diff
path: root/src/handlers.rs
blob: ebae7f390e600bbe564540b7e06a301bf0f96e9c (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
//! This module contains the implementation of converse's actix-web
//! HTTP handlers.
//!
//! Most handlers have an associated rendering function using one of
//! the tera templates stored in the `/templates` directory in the
//! project root.

use tera;
use actix_web::*;
use models::*;
use db::*;
use actix::prelude::{Addr, Syn};
use futures::Future;
use errors::{Result, ConverseError};
use oidc::*;

type ConverseResponse = Box<Future<Item=HttpResponse, Error=ConverseError>>;

/// Represents the state carried by the web server actors.
pub struct AppState {
    /// Address of the database actor
    pub db: Addr<Syn, DbExecutor>,

    /// Address of the OIDC actor
    pub oidc: Addr<Syn, OidcExecutor>,

    /// Compiled templates
    pub tera: tera::Tera,
}

/// This function renders an overview of threads into the default
/// thread list template.
fn render_threads(tpl: &tera::Tera, threads: Vec<Thread>) -> Result<HttpResponse> {
    let mut ctx = tera::Context::new();
    ctx.add("threads", &threads);
    let body = tpl.render("index.html", &ctx)?;
    Ok(HttpResponse::Ok().content_type("text/html").body(body))
}

pub fn forum_index(state: State<AppState>) -> ConverseResponse {
    state.db.send(ListThreads)
        .from_err()
        .and_then(move |res| match res {
            Ok(threads) => Ok(render_threads(&state.tera, threads)?),
            Err(err) => {
                error!("Error loading threads: {}", err);
                Ok(HttpResponse::InternalServerError().into())
            }
        })
        .responder()
}

/// This function renders a single forum thread into the default
/// thread view.
fn render_thread(tpl: &tera::Tera, thread: Thread, posts: Vec<Post>)
                 -> Result<HttpResponse> {
    let mut ctx = tera::Context::new();
    ctx.add("thread", &thread);
    ctx.add("posts", &posts);

    let body = tpl.render("thread.html", &ctx)?;
    Ok(HttpResponse::Ok()
        .content_type("text/html")
        .body(body))
}

/// This handler retrieves and displays a single forum thread.
pub fn forum_thread(state: State<AppState>, thread_id: Path<i32>) -> ConverseResponse {
    let id = thread_id.into_inner();
    state.db.send(GetThread(id))
        .from_err()
        .and_then(move |res| match res {
            Ok((thread, posts)) => Ok(render_thread(&state.tera, thread, posts)?),
            Err(err) => {
                error!("Error loading thread {}: {}", id, err);
                Ok(HttpResponse::InternalServerError().into())
            }
        })
        .responder()
}

/// This handler receives a "New thread"-form and redirects the user
/// to the new thread after creation.
pub fn submit_thread(state: State<AppState>, input: Form<NewThread>) -> ConverseResponse {
    state.db.send(CreateThread(input.0))
        .from_err()
        .and_then(move |res| {
            let thread = res?;
            info!("Created new thread \"{}\" with ID {}", thread.title, thread.id);
            Ok(HttpResponse::SeeOther()
               .header("Location", format!("/thread/{}", thread.id))
               .finish())
        })
        .responder()
}

/// This handler receives a "Reply"-form and redirects the user to the
/// new post after creation.
pub fn reply_thread(state: State<AppState>, input: Form<NewPost>) -> ConverseResponse {
    state.db.send(CreatePost(input.0))
        .from_err()
        .and_then(move |res| {
            let post = res?;
            info!("Posted reply {} to thread {}", post.id, post.thread_id);
            Ok(HttpResponse::SeeOther()
               .header("Location", format!("/thread/{}#post{}", post.thread_id, post.id))
               .finish())
        })
        .responder()
}

/// This handler initiates an OIDC login.
pub fn login(state: State<AppState>) -> ConverseResponse {
    state.oidc.send(GetLoginUrl)
        .from_err()
        .and_then(|url| Ok(HttpResponse::TemporaryRedirect()
                           .header("Location", url)
                           .finish()))
        .responder()
}

pub fn callback(state: State<AppState>, data: Form<CodeResponse>) -> ConverseResponse {
    state.oidc.send(RetrieveToken(data.0))
        .from_err()
        .and_then(|author| {
            Ok(HttpResponse::from(format!("{:?}", author)))
        })
        .responder()
}