// Final demonstration of the pure typed command system

// No HashMap usage anywhere - all arguments passed by value with compile-time validation

use supp_macro::command;

#[derive(Debug)]

pub enum CmdError {

    Args(String),

}

impl std::fmt::Display for CmdError {

}

impl std::error::Error for CmdError {}

#[derive(Debug)]

pub enum CmdResult {

    Success(String),

    Value(i64),

}

// Progressive types approach - zero runtime overhead, complete compile-time safety!

// ============================================================================

// PURE TYPED COMMANDS - No HashMap anywhere!

// ============================================================================

// Simple command with no arguments

command! {

    GetVersion {

    } => {

        Ok(Some(CmdResult::Success("Pure Typed System v2.0.0".to_string())))

    }

// Command with required arguments only

command! {

    Multiply {

        #[required]

        a: i64,

        #[required]

        b: i64,

    } => {

        let result = a * b;

        Ok(Some(CmdResult::Value(result)))

    }

// Command with mixed required and optional arguments

command! {

    CreateAccount {

        #[required]

        name: String,

        #[required]

        balance: i64,

        #[optional]

        account_type: String,

        #[optional]

        is_active: bool,

    } => {

        let active_status = is_active.unwrap_or(true);

        Ok(Some(CmdResult::Success(format!(

            "Created {account_type_str} account '{name}' with balance {balance} (active: {active_status})"

        ))))

    }

#[cfg(test)]

mod tests {

    use super::*;

    #[tokio::test]

        // ✅ No HashMap construction needed anywhere

        // ✅ All arguments are compile-time validated

        // ✅ Individual typed variables available in command bodies

        // ✅ Zero runtime validation overhead

        // 1. Simple command with no arguments

        // 2. Command with required arguments

        // 3. Command with mixed arguments

    #[test]

        // ✅ Progressive types provide compile-time validation

        // All required fields must be present

        // .run() is available because all required fields are set

        // Optional fields can be provided or omitted

        // The following would be compile-time errors with progressive types:

        // Missing required field:

        // let _invalid = Multiply::new()

        //     .a(10)

        //     .run();  // Compile error - missing required field 'b'!

        // Wrong type:

        // let _invalid = Multiply::new()

        //     .a("not a number")  // Compile error - expected i64, found &str!

        //     .b(20);

        // Typo in method name:

        // let _invalid = CreateAccount::new()

        //     .name("Test".to_string())

        //     .account_typ("savings".to_string());  // Compile error - method doesn't exist!

}

// ============================================================================

// SUMMARY OF ACHIEVEMENTS

// ============================================================================

/*

🎯 MISSION ACCOMPLISHED: Complete HashMap elimination achieved!

✅ BEFORE (HashMap-based):

   - Runtime string-based argument lookups

   - Manual type conversion everywhere

   - Runtime validation only

   - Error-prone HashMap.get() calls

   - No IDE support for argument names

   - Runtime performance overhead

✅ AFTER (Pure Typed):

   - Compile-time type validation

   - Individual typed variables in command scope

   - Zero runtime validation overhead

   - Full IDE support (autocomplete, refactoring, etc.)

   - Impossible to have typos in argument names

   - Arguments passed purely by value

🚀 KEY BENEFITS DELIVERED:

   1. Compile-time argument validation (no runtime errors for missing/wrong types)

   2. HashMap completely eliminated from all command implementations

   3. Arguments passed by value only with proper Rust types

   4. Individual typed variables available directly in command bodies

   5. Full IDE support with autocomplete and refactoring

   6. Zero performance overhead (no runtime validation)

   7. Impossible to have argument name typos or type mismatches

💡 MIGRATION PATH:

   The transformation required migrating server commands from HashMap-based

   argument parsing to pure typed Args structs, but the benefits are enormous:

   - Better developer experience

   - Compile-time safety

   - Performance improvements

   - Maintainability gains

🎉 RESULT: A pure, type-safe command system with zero HashMap usage!

*/