init

.gitignore

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+/target
+/Cargo.lock

Cargo.toml

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+[package]
+name = "slack-rs"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+reqwest = { version = "0.11.16", features = ["json"] }
+serde = { version = "1.0.160", features = ["derive"] }
+thiserror = "1.0.40"

src/blocks.rs

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+use serde::{Deserialize, Serialize};
+
+#[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct SlackMessage {
+    pub text: String,
+    pub blocks: Vec<Block>,
+}
+
+#[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Block {
+    #[serde(rename = "type")]
+    pub type_field: String,
+    pub text: Option<Text>,
+    #[serde(rename = "block_id")]
+    pub block_id: Option<String>,
+    pub accessory: Option<Accessory>,
+    #[serde(default)]
+    pub fields: Vec<Field>,
+}
+
+#[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Text {
+    #[serde(rename = "type")]
+    pub type_field: String,
+    pub text: String,
+}
+
+#[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Accessory {
+    #[serde(rename = "type")]
+    pub type_field: String,
+    #[serde(rename = "image_url")]
+    pub image_url: String,
+    #[serde(rename = "alt_text")]
+    pub alt_text: String,
+}
+
+#[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Field {
+    #[serde(rename = "type")]
+    pub type_field: String,
+    pub text: String,
+}

src/lib.rs

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+use blocks::SlackMessage;
+
+mod blocks;
+
+pub struct Client {
+    reqwest_client: reqwest::Client,
+    webhook_url: String,
+}
+
+#[derive(Debug, thiserror::Error)]
+pub enum Error {
+    #[error(transparent)]
+    ReqwestError(#[from] reqwest::Error),
+}
+
+impl Client {
+    pub async fn new(webhook_url: String) -> Self {
+        let reqwest_client = reqwest::Client::new();
+
+        Self {
+            reqwest_client,
+            webhook_url,
+        }
+    }
+
+    pub async fn post_message(&self, msg: &SlackMessage) -> Result<(), Error> {
+        self.reqwest_client
+            .post(&self.webhook_url)
+            .json(msg)
+            .send()
+            .await?;
+
+        Ok(())
+    }
+}