Refactor code to use API struct deserialization

The deserialization errors have been fixed in 0.18.1

.dockerignore

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+target

.gitignore

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+/target
+.vscode

Cargo.toml

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+[package]
+name = "wordlebot"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+chrono = "0.4.26"
+reqwest = { version ="0.11.18", features = ["json"]}
+tokio = { version = "1" }
+serde = { version = "1.0.104", features = ["derive"] }
+serde_json = "1.0.48"
+lemmy_api_common = "0.18.1"

Dockerfile

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+FROM rust:1-bookworm as builder
+WORKDIR /usr/src/wordlebot
+COPY . .
+RUN cargo install --path .
+
+FROM debian:bookworm-slim
+
+RUN apt-get update \
+	&& apt-get install -y libssl3 ca-certificates \
+	&& rm -rf /var/lib/apt/lists/*
+COPY --from=builder /usr/local/cargo/bin/wordlebot /usr/local/bin/wordlebot
+CMD ["wordlebot"]

src/helper.rs

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+use lemmy_api_common::{
+    community::{GetCommunity, GetCommunityResponse},
+    lemmy_db_schema::newtypes::CommunityId,
+    person::{Login, LoginResponse},
+    sensitive::Sensitive,
+};
+use reqwest::Client;
+use std::fmt;
+
+static API_VERSION: i32 = 3;
+
+pub fn lemmy_password() -> Result<Sensitive<String>, std::env::VarError> {
+    Ok(Sensitive::new(std::env::var("LEMMY_PASSWORD")?))
+}
+
+pub fn lemmy_user() -> Sensitive<String> {
+    Sensitive::new(std::env::var("LEMMY_USER").unwrap_or_else(|_| "wordlebot".to_string()))
+}
+
+pub fn lemmy_server() -> String {
+    std::env::var("LEMMY_SERVER").unwrap_or_else(|_| "https://enterprise.lemmy.ml".to_string())
+}
+
+pub fn lemmy_community() -> String {
+    std::env::var("LEMMY_COMMUNITY").unwrap_or_else(|_| "wordle".to_string())
+}
+
+pub fn api_url(suffix: &str) -> String {
+    format!("{}/api/v{}/{}", lemmy_server(), API_VERSION, suffix)
+}
+
+#[derive(Debug)]
+struct LoginFailedError;
+
+impl std::error::Error for LoginFailedError {}
+
+impl fmt::Display for LoginFailedError {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+            write!(f, "Login failed.")
+    }
+}
+
+pub async fn get_community_id(
+    client: &Client,
+    community_name: String,
+) -> Result<CommunityId, Box<dyn std::error::Error>> {
+    let params = GetCommunity {
+        name: Some(community_name),
+        ..Default::default()
+    };
+
+    let response = client
+        .get(api_url("community"))
+        .query(&params)
+        .send()
+        .await?;
+    let data = response.json::<GetCommunityResponse>().await?;
+    Ok(data.community_view.community.id)
+}
+
+pub async fn lemmy_login(client: &Client) -> Result<Sensitive<String>, Box<dyn std::error::Error>> {
+    println!("Logging in");
+    let params = Login {
+        username_or_email: lemmy_user(),
+        password: lemmy_password()?,
+        ..Default::default()
+    };
+
+    let response = client
+        .post(api_url("user/login"))
+        .json(&params)
+        .send()
+        .await?;
+    response.error_for_status_ref()?;
+
+    let data = response.json::<LoginResponse>().await?;
+
+    if let Some(jwt) = data.jwt {
+        return Ok(jwt);
+    }
+
+    Err(Box::new(LoginFailedError))
+}

src/main.rs

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+use chrono::{Datelike, Month, Utc};
+use lemmy_api_common::{post::{CreatePost, PostResponse}, sensitive::Sensitive, lemmy_db_schema::newtypes::PostId};
+use reqwest::{Client, Url};
+use serde::Deserialize;
+
+mod helper;
+use crate::helper::{get_community_id, lemmy_community, lemmy_login};
+
+#[derive(Debug, Deserialize, Default)]
+struct WordleData {
+    days_since_launch: i64,
+}
+
+async fn get_current_nyt_wordle_data() -> Result<WordleData, Box<dyn std::error::Error>> {
+    println!("Fetching NYT wordle data");
+    let now = Utc::now();
+    let date_string = format!("{}-{:02}-{:02}", now.year(), now.month(), now.day());
+    let response =
+        reqwest::get(format! {"https://www.nytimes.com/svc/wordle/v2/{}.json", date_string})
+            .await?;
+    // Did it work?
+    response.error_for_status_ref()?;
+    let data = response.json::<WordleData>().await?;
+    println!("{:?}", data);
+    Ok(data)
+}
+
+async fn post_to_lemmy(data: &WordleData, client: &Client, auth: Sensitive<String>) -> Result<PostId, Box<dyn std::error::Error>> {
+    println!("Posting to lemmy: {:?}", data);
+
+    // Get the community id
+    let community_id = get_community_id(client, lemmy_community()).await?;
+
+    let now = Utc::now();
+
+    let month = Month::try_from(now.month() as u8)?;
+    let title = format!(
+        "Wordle #{} - {} {} {} {}",
+        data.days_since_launch,
+        now.weekday(),
+        now.day(),
+        month.name(),
+        now.year()
+    );
+    let url = Url::parse(
+        format!(
+            "https://www.nytimes.com/games/wordle/index.html#{}",
+            data.days_since_launch
+        )
+        .as_ref(),
+    )?;
+    println!("{}", title);
+
+    let params = CreatePost {
+        community_id,
+        name: title,
+        url: Some(url),
+        body: Some("Post your results and discuss your guesses. Have fun!  \nNote: there might be spoilers in the thread.".to_owned()),
+        auth,
+        ..Default::default()
+    };
+
+    let response = client
+        .post(helper::api_url("post"))
+        .json(&params)
+        .send()
+        .await?;
+    let data = response.json::<PostResponse>().await?;
+    Ok(data.post_view.post.id)
+}
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    println!("A wordle a day keeps the doctor away!");
+
+    let client = Client::new();
+    let auth = lemmy_login(&client).await?;
+    let data = get_current_nyt_wordle_data().await?;
+    let id = post_to_lemmy(&data, &client, auth).await?;
+    println!("New post ID: {}", id);
+
+    Ok(())
+}