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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
|
#![allow(clippy::todo)]
use async_trait::async_trait;
use futures_util::FutureExt;
use serde_json::json;
use std::collections::HashMap;
use std::sync::Arc;
use tokio::sync::RwLock;
use crate::database::{ErrorKind, MicropubChannel, Result, Settings, Storage, StorageError};
#[derive(Clone, Debug)]
pub struct MemoryStorage {
pub mapping: Arc<RwLock<HashMap<String, serde_json::Value>>>,
pub channels: Arc<RwLock<HashMap<String, Vec<String>>>>,
}
#[async_trait]
impl Storage for MemoryStorage {
async fn post_exists(&self, url: &str) -> Result<bool> {
return Ok(self.mapping.read().await.contains_key(url));
}
async fn get_post(&self, url: &str) -> Result<Option<serde_json::Value>> {
let mapping = self.mapping.read().await;
match mapping.get(url) {
Some(val) => {
if let Some(new_url) = val["see_other"].as_str() {
match mapping.get(new_url) {
Some(val) => Ok(Some(val.clone())),
None => {
drop(mapping);
self.mapping.write().await.remove(url);
Ok(None)
}
}
} else {
Ok(Some(val.clone()))
}
}
_ => Ok(None),
}
}
async fn put_post(&self, post: &'_ serde_json::Value, _user: &'_ str) -> Result<()> {
let mapping = &mut self.mapping.write().await;
let key: &str = match post["properties"]["uid"][0].as_str() {
Some(uid) => uid,
None => {
return Err(StorageError::new(
ErrorKind::Other,
"post doesn't have a UID",
))
}
};
mapping.insert(key.to_string(), post.clone());
if post["properties"]["url"].is_array() {
for url in post["properties"]["url"]
.as_array()
.unwrap()
.iter()
.map(|i| i.as_str().unwrap().to_string())
{
if url != key {
mapping.insert(url, json!({ "see_other": key }));
}
}
}
if post["type"]
.as_array()
.unwrap()
.iter()
.any(|i| i == "h-feed")
{
// This is a feed. Add it to the channels array if it's not already there.
println!("{:#}", post);
self.channels
.write()
.await
.entry(
post["properties"]["author"][0]
.as_str()
.unwrap()
.to_string(),
)
.or_insert_with(Vec::new)
.push(key.to_string())
}
Ok(())
}
async fn update_post(&self, url: &'_ str, update: serde_json::Value) -> Result<()> {
let mut add_keys: HashMap<String, serde_json::Value> = HashMap::new();
let mut remove_keys: Vec<String> = vec![];
let mut remove_values: HashMap<String, Vec<serde_json::Value>> = HashMap::new();
if let Some(delete) = update["delete"].as_array() {
remove_keys.extend(
delete
.iter()
.filter_map(|v| v.as_str())
.map(|v| v.to_string()),
);
} else if let Some(delete) = update["delete"].as_object() {
for (k, v) in delete {
if let Some(v) = v.as_array() {
remove_values
.entry(k.to_string())
.or_default()
.extend(v.clone());
} else {
return Err(StorageError::new(
ErrorKind::BadRequest,
"Malformed update object",
));
}
}
}
if let Some(add) = update["add"].as_object() {
for (k, v) in add {
if v.is_array() {
add_keys.insert(k.to_string(), v.clone());
} else {
return Err(StorageError::new(
ErrorKind::BadRequest,
"Malformed update object",
));
}
}
}
if let Some(replace) = update["replace"].as_object() {
for (k, v) in replace {
remove_keys.push(k.to_string());
add_keys.insert(k.to_string(), v.clone());
}
}
let mut mapping = self.mapping.write().await;
if let Some(mut post) = mapping.get(url) {
if let Some(url) = post["see_other"].as_str() {
if let Some(new_post) = mapping.get(url) {
post = new_post
} else {
return Err(StorageError::new(
ErrorKind::NotFound,
"The post you have requested is not found in the database.",
));
}
}
let mut post = post.clone();
for k in remove_keys {
post["properties"].as_object_mut().unwrap().remove(&k);
}
for (k, v) in remove_values {
let k = &k;
let props = if k == "children" {
&mut post
} else {
&mut post["properties"]
};
v.iter().for_each(|v| {
if let Some(vec) = props[k].as_array_mut() {
if let Some(index) = vec.iter().position(|w| w == v) {
vec.remove(index);
}
}
});
}
for (k, v) in add_keys {
let props = if k == "children" {
&mut post
} else {
&mut post["properties"]
};
let k = &k;
if let Some(prop) = props[k].as_array_mut() {
if k == "children" {
v.as_array()
.unwrap()
.iter()
.cloned()
.rev()
.for_each(|v| prop.insert(0, v));
} else {
prop.extend(v.as_array().unwrap().iter().cloned());
}
} else {
post["properties"][k] = v
}
}
mapping.insert(
post["properties"]["uid"][0].as_str().unwrap().to_string(),
post,
);
} else {
return Err(StorageError::new(
ErrorKind::NotFound,
"The designated post wasn't found in the database.",
));
}
Ok(())
}
async fn get_channels(&self, user: &'_ str) -> Result<Vec<MicropubChannel>> {
match self.channels.read().await.get(user) {
Some(channels) => Ok(futures_util::future::join_all(
channels
.iter()
.map(|channel| {
self.get_post(channel).map(|result| result.unwrap()).map(
|post: Option<serde_json::Value>| {
post.map(|post| MicropubChannel {
uid: post["properties"]["uid"][0].as_str().unwrap().to_string(),
name: post["properties"]["name"][0]
.as_str()
.unwrap()
.to_string(),
})
},
)
})
.collect::<Vec<_>>(),
)
.await
.into_iter()
.flatten()
.collect::<Vec<_>>()),
None => Ok(vec![]),
}
}
#[allow(unused_variables)]
async fn read_feed_with_limit(
&self,
url: &'_ str,
after: &'_ Option<String>,
limit: usize,
user: &'_ Option<String>,
) -> Result<Option<serde_json::Value>> {
todo!()
}
async fn delete_post(&self, url: &'_ str) -> Result<()> {
self.mapping.write().await.remove(url);
Ok(())
}
#[allow(unused_variables)]
async fn get_setting(&self, setting: Settings, user: &'_ str) -> Result<String> {
todo!()
}
#[allow(unused_variables)]
async fn set_setting(&self, setting: Settings, user: &'_ str, value: &'_ str) -> Result<()> {
todo!()
}
}
impl Default for MemoryStorage {
fn default() -> Self {
Self::new()
}
}
impl MemoryStorage {
pub fn new() -> Self {
Self {
mapping: Arc::new(RwLock::new(HashMap::new())),
channels: Arc::new(RwLock::new(HashMap::new())),
}
}
}
|
