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

//! Attachments Rest API Endpoint definitions
//!
//! [Redmine Documentation](https://www.redmine.org/projects/redmine/wiki/Rest_Attachments)
//!
//! - [x] specific attachment endpoint
//! - [ ] update attachment endpoint (not documented and the link to the issue in the wiki points to an issue about something else)
//! - [x] delete attachment endpoint

use derive_builder::Builder;
use reqwest::Method;
use std::borrow::Cow;

use crate::api::users::UserEssentials;
use crate::api::{Endpoint, ReturnsJsonResponse};

/// a type for attachment to use as an API return type
///
/// alternatively you can use your own type limited to the fields you need
#[derive(Debug, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
pub struct Attachment {
    /// numeric id
    pub id: u64,
    /// filename as specified on upload
    pub filename: String,
    /// file size
    pub filesize: u64,
    /// content MIME type
    pub content_type: Option<String>,
    /// description
    #[serde(default)]
    pub description: Option<String>,
    /// url where the content of this attachment can be downloaded
    pub content_url: String,
    /// uploader
    pub author: UserEssentials,
    /// The time when this file was uploaded
    #[serde(
        serialize_with = "crate::api::serialize_rfc3339",
        deserialize_with = "crate::api::deserialize_rfc3339"
    )]
    pub created_on: time::OffsetDateTime,
}

/// The endpoint for a specific Redmine attachment
#[derive(Debug, Builder)]
#[builder(setter(strip_option))]
pub struct GetAttachment {
    /// id of the attachment to retrieve
    id: u64,
}

impl ReturnsJsonResponse for GetAttachment {}

impl GetAttachment {
    /// Create a builder for the endpoint.
    #[must_use]
    pub fn builder() -> GetAttachmentBuilder {
        GetAttachmentBuilder::default()
    }
}

impl Endpoint for GetAttachment {
    fn method(&self) -> Method {
        Method::GET
    }

    fn endpoint(&self) -> Cow<'static, str> {
        format!("attachments/{}.json", &self.id).into()
    }
}

/// The endpoint to delete a Redmine attachment
#[derive(Debug, Builder)]
#[builder(setter(strip_option))]
pub struct DeleteAttachment {
    /// id of the attachment to delete
    id: u64,
}

impl DeleteAttachment {
    /// Create a builder for the endpoint.
    #[must_use]
    pub fn builder() -> DeleteAttachmentBuilder {
        DeleteAttachmentBuilder::default()
    }
}

impl Endpoint for DeleteAttachment {
    fn method(&self) -> Method {
        Method::DELETE
    }

    fn endpoint(&self) -> Cow<'static, str> {
        format!("attachments/{}.json", &self.id).into()
    }
}

/// helper struct for outer layers with a attachment field holding the inner data
#[derive(Debug, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
pub struct AttachmentWrapper<T> {
    /// to parse JSON with attachment key
    pub attachment: T,
}

#[cfg(test)]
mod test {
    use super::*;
    use pretty_assertions::assert_eq;
    use std::error::Error;
    use tracing_test::traced_test;

    #[traced_test]
    #[test]
    fn test_get_attachment() -> Result<(), Box<dyn Error>> {
        dotenvy::dotenv()?;
        let redmine = crate::api::Redmine::from_env()?;
        let endpoint = GetAttachment::builder().id(3).build()?;
        redmine.json_response_body::<_, AttachmentWrapper<Attachment>>(&endpoint)?;
        Ok(())
    }

    /// this tests if any of the results contain a field we are not deserializing
    ///
    /// this will only catch fields we missed if they are part of the response but
    /// it is better than nothing
    #[traced_test]
    #[test]
    fn test_completeness_attachment_type() -> Result<(), Box<dyn Error>> {
        dotenvy::dotenv()?;
        let redmine = crate::api::Redmine::from_env()?;
        let endpoint = GetAttachment::builder().id(3).build()?;
        let AttachmentWrapper { attachment: value } =
            redmine.json_response_body::<_, AttachmentWrapper<serde_json::Value>>(&endpoint)?;
        let o: Attachment = serde_json::from_value(value.clone())?;
        let reserialized = serde_json::to_value(o)?;
        assert_eq!(value, reserialized);
        Ok(())
    }
}