stamd 0.1.0

Webservice for working with stand-off annotations on text (STAM)
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
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147

use axum::{
    http::HeaderValue,
    http::{header, StatusCode},
    response::{Html, IntoResponse, Json, Response},
};
use serde::ser::SerializeStruct;
use serde::Serialize;
use serde_json::value::Value;
use stam::StamError;
use std::collections::BTreeMap;

#[derive(Debug)]
pub enum ApiResponse {
    Created(),
    Text(String),
    Html(String),
    RawJson(String),
    /// W3C Web Annotations in JSON-LD
    RawJsonLd(String),
    JsonList(Vec<Value>),
    JsonMap(Vec<BTreeMap<String, Value>>),
    QueryUI(Vec<String>), //takes a list of store IDs
}

impl IntoResponse for ApiResponse {
    fn into_response(self) -> Response {
        match self {
            Self::Created() => (StatusCode::CREATED, "created").into_response(),
            Self::Text(s) => (StatusCode::OK, s).into_response(),
            Self::Html(s) => (StatusCode::OK, Html(s)).into_response(),
            Self::RawJsonLd(data) => (
                StatusCode::OK,
                [(
                    header::CONTENT_TYPE,
                    HeaderValue::from_static(
                        "application/ld+json; profile=\"http://www.w3.org/ns/anno.jsonld\"",
                    ),
                )],
                data,
            )
                .into_response(),
            Self::RawJson(data) => (
                StatusCode::OK,
                [(
                    header::CONTENT_TYPE,
                    HeaderValue::from_static(
                        "application/ld+json; profile=\"http://www.w3.org/ns/anno.jsonld\"",
                    ),
                )],
                data,
            )
                .into_response(),
            Self::JsonList(data) => (StatusCode::OK, Json(data)).into_response(),
            Self::JsonMap(data) => (StatusCode::OK, Json(data)).into_response(),
            Self::QueryUI(store_ids) => {
                let options: Vec<_> = store_ids
                    .into_iter()
                    .map(|s| format!("<option value=\"{}\">{}</option>", s, s))
                    .collect();
                let html: String = format!(
                    "<html>
<head>
    <meta content=\"text/html; charset=utf8\" http-equiv=\"content-type\">
    <title>stamd</title>
</head>
<body>
<h1>stamd</h1>
<p>See <a href=\"/swagger-ui\">OpenAPI specification</a></p>
<hr/>
<form method=\"post\" action=\"/query\">
<label>Store:</label> <select name=\"store\">{}</select><br/>
<label>Query (<a href=\"https://github.com/annotation/stam/tree/master/extensions/stam-query\">STAMQL</a>):</label><br/><textarea name=\"query\" style=\"width: 60%; min-height: 360px;\" spellcheck=\"false\"></textarea><br/>
<input type=\"submit\" />
</form>
</body></html>",
                    options.join("")
                );
                (StatusCode::OK, Html(html)).into_response()
            }
        }
    }
}

#[derive(Debug)]
pub enum ApiError {
    MissingArgument(&'static str),
    InternalError(&'static str),
    NotFound(&'static str),
    CustomNotFound(String),
    NotAcceptable(&'static str),
    PermissionDenied(&'static str),
    StamError(StamError),
}

impl Serialize for ApiError {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: serde::Serializer,
    {
        if let Self::StamError(e) = self {
            e.serialize(serializer)
        } else {
            let mut state = serializer.serialize_struct("ApiError", 3)?;
            state.serialize_field("@type", "ApiError")?;
            match self {
                Self::MissingArgument(s) => {
                    state.serialize_field("name", "MissingArgument")?;
                    state.serialize_field("message", s)?;
                }
                Self::NotFound(s) => {
                    state.serialize_field("name", "NotFound")?;
                    state.serialize_field("message", s)?;
                }
                Self::CustomNotFound(s) => {
                    state.serialize_field("name", "NotFound")?;
                    state.serialize_field("message", s)?;
                }
                Self::NotAcceptable(s) => {
                    state.serialize_field("name", "NotAcceptable")?;
                    state.serialize_field("message", s)?;
                }
                Self::PermissionDenied(s) => {
                    state.serialize_field("name", "PermissionDenied")?;
                    state.serialize_field("message", s)?;
                }
                Self::InternalError(s) => {
                    state.serialize_field("name", "InternalError")?;
                    state.serialize_field("message", s)?;
                }
                Self::StamError(_) => unreachable!("Already handled"),
            }
            state.end()
        }
    }
}

impl IntoResponse for ApiError {
    fn into_response(self) -> Response {
        let statuscode = match self {
            Self::InternalError(..) => StatusCode::INTERNAL_SERVER_ERROR,
            Self::PermissionDenied(..) => StatusCode::FORBIDDEN,
            Self::NotAcceptable(..) => StatusCode::NOT_ACCEPTABLE,
            _ => StatusCode::NOT_FOUND,
        };
        (statuscode, Json(self)).into_response()
    }
}