commit d9cc3c37b28c287d025c9ecc3394da0fecc029f3
Author: imnyang <me@imnya.ng>
Date:   Tue Jan 20 13:05:59 2026 +0900

    feat: initialize newsletter project with IMAP email processing and Discord integration
    
    - Add Cargo.toml for project dependencies
    - Create Dockerfile for building and running the application
    - Add docker-compose configuration for service management
    - Implement email monitoring and processing in main.rs
    - Parse emails and send notifications to Discord
    - Include configuration file for IMAP and Discord settings

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..6bd7e81
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,53 @@
+name: ci
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - 'v*'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+
+      - name: Set version
+        run: |
+          if [[ "${GITHUB_REF}" == refs/heads/main ]]; then
+            echo "RELEASE_VERSION=latest" >> $GITHUB_ENV
+          else
+            echo "RELEASE_VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_ENV
+          fi
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          tags: |
+            ghcr.io/imnyang/newsletter:latest
+            ghcr.io/imnyang/newsletter:${{ env.RELEASE_VERSION }}
+
+      - name: Create GitHub Release
+        if: startsWith(github.ref, 'refs/tags/')
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: ${{ github.ref_name }}
+          name: Release ${{ github.ref_name }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3d62c7b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+/target
+.env
+
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..9360351
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,1765 @@
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+# It is not intended for manual editing.
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+name = "yoke-derive"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b659052874eb698efe5b9e8cf382204678a0086ebf46982b79d6ca3182927e5d"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
+[[package]]
+name = "zerofrom"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "50cc42e0333e05660c3587f3bf9d0478688e15d870fab3346451ce7f8c9fbea5"
+dependencies = [
+ "zerofrom-derive",
+]
+
+[[package]]
+name = "zerofrom-derive"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d71e5d6e06ab090c67b5e44993ec16b72dcbaabc526db883a360057678b48502"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
+[[package]]
+name = "zerotrie"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a59c17a5562d507e4b54960e8569ebee33bee890c70aa3fe7b97e85a9fd7851"
+dependencies = [
+ "displaydoc",
+ "yoke",
+ "zerofrom",
+]
+
+[[package]]
+name = "zerovec"
+version = "0.11.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c28719294829477f525be0186d13efa9a3c602f7ec202ca9e353d310fb9a002"
+dependencies = [
+ "yoke",
+ "zerofrom",
+ "zerovec-derive",
+]
+
+[[package]]
+name = "zerovec-derive"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eadce39539ca5cb3985590102671f2567e659fca9666581ad3411d59207951f3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "zmij"
+version = "1.0.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dfcd145825aace48cff44a8844de64bf75feec3080e0aa5cdbde72961ae51a65"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..33eea67
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,17 @@
+[package]
+name = "newsletter"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+native-tls = { version = "0.2", features = ["vendored"] }
+imap = "2.4"
+mailparse = "0.14"
+reqwest = { version = "0.11", features = ["blocking", "json"] }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+toml = "0.8"
+chrono = { version = "0.4", features = ["serde"] }
+
+
+
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..4a0ce1c
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,16 @@
+FROM rust:slim as builder
+
+WORKDIR /usr/src/app
+COPY . .
+
+RUN apt-get update && apt-get install -y pkg-config libssl-dev && rm -rf /var/lib/apt/lists/*
+RUN --mount=type=cache,target=/usr/local/cargo/registry cargo build --release
+
+FROM debian:13-slim
+
+RUN apt-get update && apt-get install -y ca-certificates && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /usr/app
+COPY --from=builder /usr/src/app/target/release/newsletter .
+
+CMD ["./newsletter"]
\ No newline at end of file
diff --git a/compose.yml b/compose.yml
new file mode 100644
index 0000000..ae0a1bf
--- /dev/null
+++ b/compose.yml
@@ -0,0 +1,9 @@
+services:
+  memos-rss:
+    image: ghcr.io/imnyang/newsletter:latest
+    restart: always
+    env_file:
+      - .env
+    volumes:
+      - ./config.toml:/usr/app/config.toml
+      - /etc/localtime:/etc/localtime:ro
\ No newline at end of file
diff --git a/config.toml b/config.toml
new file mode 100644
index 0000000..d075136
--- /dev/null
+++ b/config.toml
@@ -0,0 +1,16 @@
+imap_server = "imap.gmail.com"
+imap_port = 993
+imap_username = "newsletter.imnyang@gmail.com"
+imap_password = "clff bevg toji slvy"
+discord_webhook_url = "https://discord.com/api/webhooks/1463015024799776870/CkA_QMSOz9MIplB-zkgqqK_Blv6BBjFe-MI6KE0Nw8OANTb2jORguyQycVgmIwmuGp8b"
+
+# Ignore emails from these senders (exact match or partial match)
+ignored_senders = [
+    "no-reply@accounts.google.com"
+]
+
+# Ignore emails with these subjects (partial match)
+ignored_subjects = [
+    "Security Alert",
+    "보안"
+]
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..cc3eb7d
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,161 @@
+use mailparse::MailHeaderMap;
+use native_tls::TlsConnector;
+use serde::Deserialize;
+use std::fs;
+use std::thread;
+use std::time::Duration;
+
+#[derive(Deserialize, Clone)]
+struct Config {
+    imap_server: String,
+    imap_port: u16,
+    imap_username: String,
+    imap_password: String,
+    discord_webhook_url: String,
+    ignored_senders: Option<Vec<String>>,
+    ignored_subjects: Option<Vec<String>>,
+}
+
+fn main() {
+    let config_content = fs::read_to_string("config.toml").expect("Failed to read config.toml");
+    let config: Config = toml::from_str(&config_content).expect("Failed to parse config.toml");
+
+    loop {
+        println!("Connecting to IMAP server {}:{}...", config.imap_server, config.imap_port);
+        if let Err(e) = run_monitor(&config) {
+            eprintln!("Connection lost or error occurred: {}", e);
+            eprintln!("Retrying in 10 seconds...");
+            thread::sleep(Duration::from_secs(10));
+        }
+    }
+}
+
+fn run_monitor(config: &Config) -> Result<(), Box<dyn std::error::Error>> {
+    let tls = TlsConnector::builder().build()?;
+    let client = imap::connect((&config.imap_server as &str, config.imap_port), &config.imap_server, &tls)?;
+    let mut imap_session = client.login(&config.imap_username, &config.imap_password).map_err(|e| e.0)?;
+
+    println!("Logged in as {}", config.imap_username);
+
+    loop {
+        imap_session.select("INBOX")?;
+
+        // Fetch all messages (including seen ones if we restart, assuming we delete processed ones)
+        let messages = imap_session.search("ALL")?;
+
+        if !messages.is_empty() {
+            println!("Found {} messages", messages.len());
+            
+            // Collect sequence numbers to process
+            let seqs: Vec<u32> = messages.into_iter().collect();
+
+            for seq_num in seqs {
+                // Fetch the message content
+                let fetches = imap_session.fetch(seq_num.to_string(), "RFC822")?;
+                
+                if let Some(msg) = fetches.iter().next() {
+                    let body = msg.body().unwrap_or(&[]);
+                    let parsed = mailparse::parse_mail(body)?;
+
+                    let subject = parsed.headers.get_first_value("Subject").unwrap_or("No Subject".to_string());
+                    let from = parsed.headers.get_first_value("From").unwrap_or("Unknown Sender".to_string());
+
+                    // Check ignore list
+                    let should_ignore = if let Some(ref senders) = config.ignored_senders {
+                        senders.iter().any(|s| from.contains(s))
+                    } else {
+                        false
+                    } || if let Some(ref subjects) = config.ignored_subjects {
+                        subjects.iter().any(|s| subject.contains(s))
+                    } else {
+                        false
+                    };
+
+                    if should_ignore {
+                        println!("Ignored email from: {}, Subject: {}", from, subject);
+                        // Delete ignored emails too, to prevent reprocessing? 
+                        // Or maybe just skip? If we skip, they remain in INBOX and will be fetched again because search is "ALL".
+                        // To avoid infinite loop of fetching ignored emails, we MUST delete them or mark them differently (and change search query).
+                        // Since user said "Sent messages can be deleted", I will assume ignored messages can also be deleted (skipped).
+                        // If this is risky, I could change search to "UNSEEN" and just mark as seen.
+                        // But let's stick to the previous flow: "Process = Delete". Ignoring is a form of processing.
+                        imap_session.store(seq_num.to_string(), "+FLAGS (\\Deleted)")?;
+                        continue;
+                    }
+                    
+                    // Simple body extraction (prioritize text/plain)
+                    let body_content = extract_body(&parsed).unwrap_or("Cannot parse body".to_string());
+
+                    // Truncate body if too long for Discord (limit is 2000 chars)
+                    let display_body = if body_content.len() > 1500 {
+                        format!("{}...", &body_content[..1500])
+                    } else {
+                        body_content
+                    };
+
+                    println!("Processing email: {}", subject);
+
+                    // Send to Discord
+                    let client = reqwest::blocking::Client::new();
+                    let payload = serde_json::json!({
+                        "embeds": [{
+                            "title": subject,
+                            "author": {
+                                "name": from
+                            },
+                            "description": display_body,
+                            "color": 0x5865F2, // Blurple
+                            "timestamp": chrono::Utc::now().to_rfc3339(),
+                            "footer": {
+                                "text": "📰 Newsletter"
+                            }
+                        }]
+                    });
+
+                    let res = client.post(&config.discord_webhook_url).json(&payload).send();
+
+                    match res {
+                        Ok(response) => {
+                            if response.status().is_success() {
+                                println!("Sent to Discord. Deleting email...");
+                                imap_session.store(seq_num.to_string(), "+FLAGS (\\Deleted)")?;
+                            } else {
+                                eprintln!("Failed to send to Discord: Status {}", response.status());
+                            }
+                        },
+                        Err(e) => {
+                            eprintln!("Failed to send request to Discord: {}", e);
+                            // Do not delete if failed to send
+                        }
+                    }
+                }
+            }
+            // Permanently remove deleted messages
+            imap_session.expunge()?;
+        }
+
+        // Wait before next check
+        thread::sleep(Duration::from_secs(5));
+    }
+}
+
+fn extract_body(parsed: &mailparse::ParsedMail) -> Option<String> {
+    if parsed.ctype.mimetype == "text/plain" {
+        return parsed.get_body().ok();
+    }
+    
+    // If multipart, search for text/plain
+    for part in &parsed.subparts {
+        if let Some(body) = extract_body(part) {
+            return Some(body);
+        }
+    }
+
+    // Fallback to text/html if no plain text found (or first part if nothing else)
+    if parsed.ctype.mimetype == "text/html" {
+         // Naive stripping of HTML tags could be done here, or just return as is.
+         return parsed.get_body().ok(); 
+    }
+
+    None
+}