//! Example of validating did:plc identifiers

use atproto_plc::Did;

fn main() {
    println!("DID Validation Examples\n");
    println!("{}", "=".repeat(60));

    let test_dids = vec![
        ("did:plc:ewvi7nxzyoun6zhxrhs64oiz", true, "Valid DID"),
        ("did:plc:z72i7hdynmk6r22z27h6tvur", true, "Valid DID"),
        ("did:plc:abc123", false, "Too short"),
        (
            "did:plc:0123456789012345678901234",
            false,
            "Contains invalid characters (0,1,8,9)",
        ),
        (
            "DID:PLC:EWVI7NXZYOUN6ZHXRHS64OIZ",
            false,
            "Uppercase not allowed",
        ),
        ("did:web:example.com", false, "Wrong DID method"),
        (
            "did:plc:ewvi7nxzyoun6zhxrhs64oizextrachars",
            false,
            "Too long",
        ),
    ];

    for (did_str, should_be_valid, description) in test_dids {
        print!("\nTesting: {}\n  ", did_str);
        print!("Description: {}\n  ", description);

        match Did::parse(did_str) {
            Ok(did) => {
                if should_be_valid {
                    println!("✅ Valid");
                    println!("  Identifier: {}", did.identifier());
                    println!("  Full DID: {}", did.as_str());
                } else {
                    println!("❌ ERROR: Expected invalid, but was accepted!");
                }
            }
            Err(e) => {
                if !should_be_valid {
                    println!("✅ Correctly rejected");
                    println!("  Reason: {}", e);
                } else {
                    println!("❌ ERROR: Expected valid, but was rejected!");
                    println!("  Error: {}", e);
                }
            }
        }
    }

    println!("\n{}", "=".repeat(60));
    println!("\nValidation complete!");
}