//! TDD test for handle_generate_report refactor
//! Following Toyota Way TDD: Red → Green → Refactor
//! Testing structural integrity during refactoring from complexity 19 → ≤8

use anyhow::Result;
use pmat::cli::handlers::enhanced_reporting_handlers::handle_generate_report;
use pmat::cli::{AnalysisType, ReportOutputFormat};
use std::path::PathBuf;
use tempfile::tempdir;

/// Test configuration structure is preserved during refactor
#[tokio::test]
async fn test_enhanced_reporting_config_structure() -> Result<()> {
    let temp_dir = tempdir()?;
    let project_path = temp_dir.path().to_path_buf();

    // Test that function accepts all expected parameters
    let _result = handle_generate_report(
        project_path,
        ReportOutputFormat::Json,
        false, // text
        false, // markdown
        false, // csv
        false, // include_visualizations
        false, // include_executive_summary
        false, // include_recommendations
        vec![AnalysisType::Complexity],
        80,    // confidence_threshold
        None,  // output
        false, // perf
    )
    .await;

    // Function structure test - accepts all parameters without panic
    Ok(())
}

/// Test format determination logic patterns
#[tokio::test]
async fn test_format_determination_patterns() -> Result<()> {
    let temp_dir = tempdir()?;
    let project_path = temp_dir.path().to_path_buf();

    // Test text format shortcut
    let _text_result = handle_generate_report(
        project_path.clone(),
        ReportOutputFormat::Json, // should be overridden
        true,                     // text format
        false,
        false,
        false,
        false,
        false,
        vec![],
        50,
        None,
        false,
    )
    .await;

    // Test markdown format shortcut
    let _markdown_result = handle_generate_report(
        project_path.clone(),
        ReportOutputFormat::Json, // should be overridden
        false,
        true, // markdown format
        false,
        false,
        false,
        false,
        vec![],
        50,
        None,
        false,
    )
    .await;

    // Test csv format shortcut
    let _csv_result = handle_generate_report(
        project_path,
        ReportOutputFormat::Json, // should be overridden
        false,
        false,
        true, // csv format
        false,
        false,
        false,
        vec![],
        50,
        None,
        false,
    )
    .await;

    Ok(())
}

/// Test error handling patterns during refactor
#[tokio::test]
async fn test_error_patterns() -> Result<()> {
    // Test with non-existent path
    let invalid_path = PathBuf::from("/invalid/path/does/not/exist");

    let result = handle_generate_report(
        invalid_path,
        ReportOutputFormat::Text,
        false,
        false,
        false,
        false,
        false,
        false,
        vec![],
        80,
        None,
        false,
    )
    .await;

    // Should handle invalid paths gracefully (may fail, but shouldn't panic)
    if result.is_ok() {
        // Success case handled
    }

    Ok(())
}

/// Test main workflow structure is preserved
#[tokio::test]
async fn test_handle_generate_report_structure() -> Result<()> {
    let temp_dir = tempdir()?;
    let project_path = temp_dir.path().to_path_buf();

    // Create minimal rust file for analysis
    let main_rs = project_path.join("main.rs");
    tokio::fs::write(&main_rs, "fn main() { println!(\"Hello, world!\"); }").await?;

    let _result = handle_generate_report(
        project_path,
        ReportOutputFormat::Text,
        false,
        false,
        false,
        false,
        false,
        false,
        vec![AnalysisType::Complexity],
        50,
        None, // auto-generate filename
        true, // perf mode
    )
    .await;

    // Test that refactored function maintains core workflow:
    // 1. Format determination
    // 2. Service creation
    // 3. Report generation
    // 4. Format conversion
    // 5. Output formatting
    // 6. Output writing
    // 7. Summary generation
    Ok(())
}
