Redo mattermost support

src/mattermost.rs

@@ -4,15 +4,23 @@ use anyhow::Result;
 
 pub struct Context {
     pub base: String,
-    pub token: String,
+    pub auth_header: String,
 }
 
 pub struct Channel {
     channel_id: String,
 }
 
+
 impl Context {
 
+    pub fn new(base: String, token: &str) -> Result<Self> {
+        Ok(Self {
+            base,
+            auth_header: format!("Bearer {token}"),
+        })
+    }
+
     fn path(&self, rel: &str) -> String {
         format!("{}/api/v4/{}", self.base, rel)
     }
@@ -38,6 +46,18 @@ impl Context {
         self.set_custom_status(text, emoji)
     }
 
-    pub fn send_to_channel(&self, channel: &Channel, )
+    pub fn channel(&self, id: &str) -> Channel {
+        Channel { channel_id: id.to_owned() }
+    }
+
+    pub fn send_to_channel(&self, channel: &Channel, msg: &str) -> Result<()> {
+        let path = self.path("posts");
+        ureq::post(&path)
+            .set("Authorization", &self.auth_header)
+            .send_json(json!( 
+                { "channel_id": channel.channel_id, "message": msg }
+            ))?;
+        Ok(())
+    }
 
 }