//! TDD Tests for TDG File Score Storage - Simplified RED Phase
//!
//! These tests verify that TDG should store file scores but currently doesn't

use tempfile::TempDir;

#[test]
#[ignore] // TDD RED phase - Feature not implemented yet (PMAT-COVERAGE-002)
          // This test runs cargo run multiple times (16+ minutes)
          // Remove #[ignore] when implementing TDG storage feature
fn test_tdg_stores_scores_after_analysis() {
    // This test verifies that when we run TDG analysis on a file,
    // the score should be stored for future reference

    // Arrange
    let temp_dir = TempDir::new().expect("Failed to create temp dir");
    let test_file = temp_dir.path().join("test.rs");
    std::fs::write(&test_file, "fn main() { println!(\"Hello\"); }")
        .expect("Failed to write test file");

    // Act - Run TDG analysis (using the CLI for now)
    let output = std::process::Command::new("cargo")
        .args([
            "run",
            "--package",
            "pmat",
            "--bin",
            "pmat",
            "--",
            "tdg",
            test_file.to_str().unwrap(),
        ])
        .output()
        .expect("Failed to run TDG");

    // The analysis should succeed
    assert!(output.status.success(), "TDG analysis should succeed");

    // Now check if the score was stored
    let storage_output = std::process::Command::new("cargo")
        .args([
            "run",
            "--package",
            "pmat",
            "--bin",
            "pmat",
            "--",
            "tdg",
            "storage",
            "stats",
        ])
        .output()
        .expect("Failed to check storage");

    let storage_str = String::from_utf8_lossy(&storage_output.stdout);

    // Assert - This will FAIL in RED phase because scores aren't being stored
    assert!(
        !storage_str.contains("Total: 0 entries"),
        "Storage should contain at least 1 entry after analysis, but found: {}",
        storage_str
    );
}

#[test]
#[ignore] // TDD RED phase - Part of storage feature suite (PMAT-COVERAGE-002)
          // Remove #[ignore] when implementing TDG storage feature
fn test_tdg_storage_is_empty_initially() {
    // This test should PASS - verifying our storage starts empty

    let output = std::process::Command::new("cargo")
        .args([
            "run",
            "--package",
            "pmat",
            "--bin",
            "pmat",
            "--",
            "tdg",
            "storage",
            "stats",
        ])
        .output()
        .expect("Failed to check storage");

    let storage_str = String::from_utf8_lossy(&output.stdout);

    // This should pass - storage is currently empty
    assert!(
        storage_str.contains("Total: 0 entries"),
        "Storage should be empty initially"
    );
}

#[test]
#[ignore] // TDD RED phase - Feature not implemented yet (PMAT-COVERAGE-002)
          // This test runs cargo run 4 times (very slow)
          // Remove #[ignore] when implementing TDG storage feature
fn test_tdg_should_track_multiple_file_scores() {
    // This test verifies that TDG should track scores for multiple files
    // It will FAIL because storage isn't implemented

    let temp_dir = TempDir::new().expect("Failed to create temp dir");

    // Create and analyze 3 test files
    for i in 0..3 {
        let test_file = temp_dir.path().join(format!("test{}.rs", i));
        let content = format!("fn test{}() {{ println!(\"{}\"); }}", i, i);
        std::fs::write(&test_file, content).expect("Failed to write test file");

        // Run TDG analysis
        let output = std::process::Command::new("cargo")
            .args([
                "run",
                "--package",
                "pmat",
                "--bin",
                "pmat",
                "--",
                "tdg",
                test_file.to_str().unwrap(),
            ])
            .output()
            .expect("Failed to run TDG");

        assert!(
            output.status.success(),
            "TDG analysis should succeed for file {}",
            i
        );
    }

    // Check storage stats
    let storage_output = std::process::Command::new("cargo")
        .args([
            "run",
            "--package",
            "pmat",
            "--bin",
            "pmat",
            "--",
            "tdg",
            "storage",
            "stats",
        ])
        .output()
        .expect("Failed to check storage");

    let storage_str = String::from_utf8_lossy(&storage_output.stdout);

    // Assert - This will FAIL because storage isn't working
    assert!(
        !storage_str.contains("Total: 0 entries"),
        "Storage should contain 3 entries after analyzing 3 files, but found: {}",
        storage_str
    );
}

/// This test documents the expected behavior for TDG dogfooding
#[test]
#[ignore] // TDD RED phase - Documentation test that intentionally panics (PMAT-COVERAGE-002)
          // This documents future requirements, not a current bug
          // Remove #[ignore] when implementing TDG storage feature
fn test_tdg_dogfooding_requirement() {
    // REQUIREMENT: TDG should dogfood its own quality metrics
    // by storing and tracking scores for all analyzed files

    // Current state: FAILING - scores are calculated but not stored
    // Expected state: All TDG analyses should persist scores for:
    // 1. Historical tracking
    // 2. Trend analysis
    // 3. Quality gate comparisons
    // 4. Cache optimization

    // This is a documentation test that always fails in RED phase
    panic!("TDG dogfooding not implemented: File scores are not being stored");
}
