//! CLI Batch Command Demo
//!
//! Demonstrates CLI command patterns for scripting and automation.
//! Run: cargo run --example `cli_batch_commands`

use std::process::Command;

fn main() {
    println!("=== CLI Batch Command Demo ===\n");

    // Show available CLI commands
    println!("--- Available CLI Subcommands ---");
    let help_output = Command::new("cargo")
        .args(["run", "--quiet", "--", "--help"])
        .current_dir(env!("CARGO_MANIFEST_DIR"))
        .output();

    if let Ok(output) = help_output {
        let stdout = String::from_utf8_lossy(&output.stdout);
        for line in stdout.lines().take(20) {
            println!("  {line}");
        }
    }

    // Demonstrate quality check invocation pattern
    println!("\n--- Quality Check Pattern ---");
    println!("  alimentar quality check data.csv");
    println!("  alimentar quality score data.csv --suggest");
    println!("  alimentar quality score data.csv --json | jq .");
    println!("  alimentar quality score data.csv --badge > badge.svg");

    // Demonstrate format conversion patterns
    println!("\n--- Format Conversion Patterns ---");
    println!("  alimentar convert data.csv --to parquet --output data.parquet");
    println!("  alimentar convert data.parquet --to csv --output data.csv");
    println!("  alimentar convert data.csv --to json | jq '.rows[]'");

    // Demonstrate drift detection
    println!("\n--- Drift Detection Patterns ---");
    println!("  alimentar drift detect current.csv --reference baseline.csv");
    println!("  alimentar drift detect prod.parquet --reference staging.parquet --json");

    // Demonstrate REPL invocation
    println!("\n--- REPL Invocation Patterns ---");
    println!("  alimentar repl                      # Interactive mode");
    println!("  echo 'info\\nquit' | alimentar repl  # Scripted mode");
    println!("  alimentar repl < commands.txt       # Batch mode");

    // Piping patterns
    println!("\n--- Pipeline Patterns ---");
    println!("  cat data.csv | alimentar quality check -");
    println!("  alimentar convert data.csv --to json | jq '.schema'");
    println!("  alimentar quality score data.csv --json | tee report.json");

    // Exit codes
    println!("\n--- Exit Code Semantics ---");
    println!("  0 = Success");
    println!("  1 = General error");
    println!("  2 = Invalid arguments");
    println!("  3 = File not found");
    println!("  4 = Quality check failed");

    println!("\n=== Demo Complete ===");
}
