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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172

use std::{collections::HashMap, path::PathBuf, sync::Arc};

use ffi_sdk::{BoxedAttachmentHandle, BoxedDitto};
use serde::ser::SerializeMap;

use super::ditto_attachment_token::DittoAttachmentToken;

#[derive(Debug)]
pub struct DittoAttachment {
    id: Box<[u8]>,
    len: u64,
    metadata: HashMap<String, String>,
    ditto: Arc<BoxedDitto>,
    attachment_handle: BoxedAttachmentHandle,
}

impl serde::Serialize for DittoAttachment {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: serde::Serializer,
    {
        let mut map = serializer.serialize_map(Some(4))?;
        map.serialize_entry("_type", "ditto_attachment")?;
        map.serialize_entry("_id", ::serde_bytes::Bytes::new(&self.id[..]))?;
        map.serialize_entry("_len", &self.len)?;
        map.serialize_entry("_meta", &self.metadata)?;
        map.end()
    }
}

impl DittoAttachment {
    pub fn new(
        id: Box<[u8]>,
        len: u64,
        metadata: HashMap<String, String>,
        ditto: Arc<BoxedDitto>,
        attachment_handle: BoxedAttachmentHandle,
    ) -> Self {
        Self {
            id,
            len,
            metadata,
            ditto,
            attachment_handle,
        }
    }

    pub fn new_with_token(
        token: DittoAttachmentToken,
        ditto: Arc<BoxedDitto>,
        attachment_handle: BoxedAttachmentHandle,
    ) -> Self {
        Self {
            id: token.id,
            len: token.len,
            metadata: token.metadata,
            ditto,
            attachment_handle,
        }
    }

    pub fn path(&self) -> PathBuf {
        let p = unsafe {
            ffi_sdk::ditto_get_complete_attachment_path(&self.ditto, &self.attachment_handle)
        };
        let p_string = p.to_string();
        p_string.into()
    }
}

#[cfg(test)]
mod tests {
    use serde_json::json;
    use std::collections::HashMap;

    use crate::{
        prelude::*,
        store::{
            ditto_attachment_fetch_event::DittoAttachmentFetchEvent,
            ditto_attachment_token::DittoAttachmentToken,
        },
        test_helpers::setup_ditto,
    };

    #[test]
    fn attachment_serialize() {
        let ditto = setup_ditto().unwrap();
        let store = ditto.store();
        let collection = store.collection("test").unwrap();

        let original_test_file_path = "tests/data/attachment_file_1.txt";

        let metadata = {
            let mut m = HashMap::new();
            m.insert("key_1".to_string(), "value_1".to_string());
            m.insert("key_2".to_string(), "value_2".to_string());
            m
        };

        let attachment = collection
            .new_attachment(original_test_file_path, metadata.clone())
            .expect("new_attachment");
        let attachment_id = attachment.id.clone();
        let attachment_len = attachment.len;
        let attachment_file_path = attachment.path();
        assert_ne!(
            original_test_file_path,
            attachment_file_path
                .clone()
                .into_os_string()
                .into_string()
                .unwrap()
        );

        let collection = store.collection("test").unwrap();
        let id = collection.upsert(json!({"hello": "again"})).unwrap();
        let mut doc = collection.find_by_id(id).exec().unwrap();

        let set = doc.set("att", attachment);
        assert!(set.is_ok());

        let attachment_token = doc.get::<DittoAttachmentToken>("att").unwrap();
        assert_eq!(attachment_token.id, attachment_id);
        assert_eq!(attachment_token.len, attachment_len);
        assert_eq!(attachment_token.metadata, metadata);

        let test_file = std::fs::read(original_test_file_path).unwrap();
        let attachment_file = std::fs::read(attachment_file_path).unwrap();

        assert_eq!(test_file, attachment_file);

        assert_eq!(test_file.len() as u64, attachment_len);
    }

    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
    async fn attachment_fetch() {
        let ditto = setup_ditto().unwrap();
        let store = ditto.store();
        let collection = store.collection("test").unwrap();

        let original_test_file_path = "tests/data/attachment_file_1.txt";

        let attachment = collection
            .new_attachment(original_test_file_path, HashMap::new())
            .expect("new_attachment");

        let collection = store.collection("test").unwrap();
        let id = collection.upsert(json!({"hello": "again"})).unwrap();
        let mut doc = collection.find_by_id(id).exec().unwrap();

        let set = doc.set("att", attachment);
        assert!(set.is_ok());

        let attachment_token = doc.get::<DittoAttachmentToken>("att").unwrap();
        let (completed_sender, mut completed_receiver) = tokio::sync::mpsc::unbounded_channel();
        let _fetcher = collection
            .fetch_attachment(attachment_token, move |event| {
                if let DittoAttachmentFetchEvent::Completed { attachment } = event {
                    let _ = completed_sender.send(attachment);
                }
            })
            .unwrap();

        let fetched_attachment = completed_receiver.recv().await.unwrap();
        let attachment_file_path = fetched_attachment.path();

        let test_file = std::fs::read(original_test_file_path).unwrap();
        let attachment_file = std::fs::read(attachment_file_path).unwrap();

        assert_eq!(test_file, attachment_file);
    }
}