Merge pull request #1 from Gridness/mvp

Mvp

Author: Gridness

.github/workflows/rust.yml

@@ -0,0 +1,50 @@
+name: Rust CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install Rust
+      uses: dtolnay/rust-toolchain@stable
+    - name: Build
+      run: cargo build --verbose
+    - name: Run tests
+      run: cargo test --verbose
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install Rust
+      uses: dtolnay/rust-toolchain@stable
+      with:
+        components: clippy, rustfmt
+    - name: Check formatting
+      run: cargo fmt -- --check
+    - name: Run clippy
+      run: cargo clippy -- -D warnings
+
+  sast:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install Rust
+      uses: dtolnay/rust-toolchain@stable
+    - name: Install cargo-audit
+      run: cargo install cargo-audit
+    - name: Run cargo-audit
+      run: cargo audit
+    - name: Install cargo-deny
+      run: cargo install cargo-deny
+    - name: Run cargo-deny
+      run: cargo deny check

.gitignore

@@ -0,0 +1 @@
+/target

Cargo.lock

@@ -0,0 +1,7 @@
+[package]
+name = "rustroika"
+version = "1.0.0"
+edition = "2024"
+
+[dependencies]
+colored = "3.0.0"

Cargo.toml

@@ -0,0 +1,80 @@
+use colored::*;
+
+fn main() {
+    let args: Vec<String> = std::env::args().collect();
+
+    if args.len() != 4 {
+        eprintln!(
+            "{}",
+            format!(
+                "Usage: {} <trips/week> <monthly_cost> <ticket_price>",
+                args[0]
+            )
+            .red()
+        );
+        std::process::exit(1);
+    }
+
+    let trips_per_week: u32 = args[1].parse().expect("Invalid trips per week");
+    let monthly_cost: u32 = args[2].parse().expect("Invalid monthly cost");
+    let ticket_price: u32 = args[3].parse().expect("Invalid ticket price");
+
+    let total_trips = trips_per_week * 4;
+    let full_price_count = (total_trips + 1) / 2;
+    let discounted_count = total_trips / 2;
+
+    let individual_cost = full_price_count * ticket_price + discounted_count * (ticket_price / 2);
+
+    println!(
+        "\n╭{}╴{}╴{}╴{}╴╮",
+        "─".repeat(14),
+        "─".repeat(10),
+        "─".repeat(14),
+        "─".repeat(17)
+    );
+    println!(
+        "│ {:14} │ {:10} │ {:14} │ {:10} │",
+        "Total trips".cyan().bold(),
+        "Monthly".cyan().bold(),
+        "Individual".cyan().bold(),
+        "Ticket".cyan().bold()
+    );
+    println!(
+        "│ {:14} │ {:>10} │ {:>14} │ {:>10} │",
+        format!("{}", total_trips).yellow(),
+        format!("{} RUB", monthly_cost).yellow(),
+        format!("{} RUB", individual_cost).yellow(),
+        format!("{} RUB", ticket_price).yellow()
+    );
+    println!(
+        "╰{}╴{}╴{}╴{}╯",
+        "─".repeat(14),
+        "─".repeat(10),
+        "─".repeat(14),
+        "─".repeat(18)
+    );
+
+    let message = match individual_cost.cmp(&monthly_cost) {
+        std::cmp::Ordering::Less => format!(
+            "🚌 Paying per trip is cheaper by {} RUB!",
+            monthly_cost - individual_cost
+        )
+        .green()
+        .bold(),
+        std::cmp::Ordering::Greater => format!(
+            "💰 Monthly pass saves you {} RUB!",
+            individual_cost - monthly_cost
+        )
+        .bright_green()
+        .bold(),
+        std::cmp::Ordering::Equal => "⚖️  Both options cost the same".blue().bold(),
+    };
+
+    println!("\n{}\n", message);
+
+    // Add explanation of discount logic
+    println!("{}", "Note:".bold().underline());
+    println!("• Subsequent trips within 90 minutes get 50% discount");
+    println!("• Discounted prices are rounded down (e.g., 63 → 31)");
+    println!("• Calculation assumes optimal discount usage");
+}