cull_gmail/
labels.rs

1use std::collections::HashMap;
2
3use google_gmail1::{
4    Gmail,
5    api::{Label, ListLabelsResponse},
6    hyper_rustls::{HttpsConnector, HttpsConnectorBuilder},
7    hyper_util::{
8        client::legacy::{Client, connect::HttpConnector},
9        rt::TokioExecutor,
10    },
11    yup_oauth2::{ApplicationSecret, InstalledFlowAuthenticator, InstalledFlowReturnMethod},
12};
13
14use crate::{Credential, Error};
15
16/// Default for the maximum number of results to return on a page
17pub const DEFAULT_MAX_RESULTS: &str = "10";
18
19/// Struct to capture configuration for List API call.
20pub struct Labels {
21    hub: Gmail<HttpsConnector<HttpConnector>>,
22    label_list: Vec<Label>,
23    label_map: HashMap<String, String>,
24}
25
26impl std::fmt::Debug for Labels {
27    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
28        f.debug_struct("Labels")
29            .field("label_list", &self.label_list)
30            .field("label_map", &self.label_map)
31            .finish()
32    }
33}
34
35impl Labels {
36    /// Create a new List struct and add the Gmail api connection.
37    pub async fn new(credential: &str) -> Result<Self, Error> {
38        let (config_dir, secret) = {
39            let config_dir = crate::utils::assure_config_dir_exists("~/.cull-gmail")?;
40
41            let secret: ApplicationSecret = Credential::load_json_file(credential).into();
42            (config_dir, secret)
43        };
44
45        let executor = TokioExecutor::new();
46        let connector = HttpsConnectorBuilder::new()
47            .with_native_roots()
48            .unwrap()
49            .https_or_http()
50            .enable_http1()
51            .build();
52
53        let client = Client::builder(executor.clone()).build(connector.clone());
54
55        let auth = InstalledFlowAuthenticator::with_client(
56            secret,
57            InstalledFlowReturnMethod::HTTPRedirect,
58            Client::builder(executor).build(connector),
59        )
60        .persist_tokens_to_disk(format!("{config_dir}/gmail1"))
61        .build()
62        .await
63        .unwrap();
64
65        Ok(Labels {
66            hub: Gmail::new(client, auth),
67            label_list: Vec::new(),
68            label_map: HashMap::new(),
69        })
70    }
71
72    /// Get the labels for the authorised account
73    pub async fn get_labels(&mut self) -> Result<(), Error> {
74        let call = self.hub.users().labels_list("me");
75        let (_response, list) = call.doit().await.map_err(Box::new)?;
76
77        self.log_label_names(&list).await?;
78
79        if let Some(labels) = list.labels {
80            let mut label_map = HashMap::new();
81            for label in &labels {
82                if label.id.is_some() && label.name.is_some() {
83                    let label = label.clone();
84                    label_map.insert(label.name.unwrap(), label.id.unwrap());
85                }
86            }
87            self.label_list = labels;
88            self.label_map = label_map;
89        }
90
91        Ok(())
92    }
93
94    async fn log_label_names(&self, list: &ListLabelsResponse) -> Result<(), Error> {
95        if let Some(labels) = &list.labels {
96            for label in labels {
97                if let Some(name) = &label.name {
98                    log::info!("{name}");
99                } else {
100                    log::warn!("No name for label {:?}", label.id);
101                }
102            }
103        }
104
105        Ok(())
106    }
107
108    /// Return the id for the name from the labels map.
109    /// Returns `None` if the name is not found in the map.
110    pub fn get_label_id(&self, name: &str) -> Option<String> {
111        self.label_map.get(name).cloned()
112    }
113}
cull_gmail/labels.rs

cull_gmail/
labels.rs
