tsk-11: New code to send message (#13)

Closes #11

Reviewed-on: #13

src/lib.rs

@@ -1 +1,105 @@
 pub mod twilio;
+
+#[derive(Default, Debug)]
+pub struct SendMsg {
+    config: VendorConfig,
+    message: Message,
+    recipient: Recipient,
+}
+
+impl SendMsg {
+    pub fn load_config(
+        &mut self,
+        auth_token: &str,
+        phone_number: &str,
+        service_sid: &str,
+        auth_sid: &str,
+    ) {
+        self.config = VendorConfig {
+            auth_token: auth_token.to_string(),
+            phone_number: phone_number.to_string(),
+            service_sid: service_sid.to_string(),
+            auth_sid: auth_sid.to_string(),
+        }
+    }
+
+    pub fn load_message(&mut self, content: &str) {
+        self.message = Message {
+            content: content.to_string(),
+        }
+    }
+
+    pub fn load_recipient(&mut self, recpient: &str) {
+        self.recipient = Recipient {
+            phone_number: recpient.to_string(),
+        }
+    }
+
+    pub async fn send_message(
+        &self,
+        param: &crate::twilio::types::Parameters,
+    ) -> Result<reqwest::Response, std::io::Error> {
+        if self.recipient.phone_number.is_empty() {
+            Err(std::io::Error::other("Recipient not provided"))
+        } else if self.message.content.is_empty() {
+            Err(std::io::Error::other("Message not provided"))
+        } else if self.config.phone_number.is_empty()
+            || self.config.service_sid.is_empty()
+            || self.config.auth_token.is_empty()
+            || self.config.auth_sid.is_empty()
+        {
+            Err(std::io::Error::other("Config not populated"))
+        } else {
+            let client = match reqwest::Client::builder().build() {
+                Ok(client) => client,
+                Err(err) => {
+                    return Err(std::io::Error::other(err));
+                }
+            };
+
+            let url = twilio::api::twilio_url(&self.config.auth_sid);
+            let headers =
+                match twilio::api::init_headers(&self.config.auth_sid, &self.config.auth_token) {
+                    Ok(headers) => headers,
+                    Err(err) => {
+                        return Err(std::io::Error::other(err));
+                    }
+                };
+            let params = twilio::api::initial_params(
+                &self.recipient.phone_number,
+                &self.message.content,
+                &self.config.phone_number,
+                &self.config.service_sid,
+                param,
+            );
+            let request = client.post(url).headers(headers).form(&params);
+            match request.send().await {
+                Ok(response) => match response.status() {
+                    reqwest::StatusCode::CREATED => Ok(response),
+                    status => Err(std::io::Error::other(format!(
+                        "Unaccounted status: {status:?}"
+                    ))),
+                },
+                Err(err) => Err(std::io::Error::other(err)),
+            }
+        }
+    }
+}
+
+#[derive(Default, Debug)]
+pub struct VendorConfig {
+    pub auth_token: String,
+    pub phone_number: String,
+    pub service_sid: String,
+    pub auth_sid: String,
+}
+
+#[derive(Default, Debug)]
+pub struct Message {
+    pub content: String,
+}
+
+#[derive(Default, Debug)]
+pub struct Recipient {
+    pub phone_number: String,
+}