// MIT License
// Copyright (c) 2025 Mahesh @ HeshApps
//
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// of this software and associated documentation files (the "Software"), to deal
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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//! Unit tests for Music module for Unibar

use super::*;
use std::process::Command;
use crate::bar_modules::BarModuleActions;

/// Helper function to create test options
fn create_test_options(with_progress: bool) -> common::AppOptions {
    common::AppOptions {
        interval: 1,
        weather_units: common::TemperatureUnits::Metric,
        weather_station: "test".to_string(),
        music_progress: with_progress,
        debug: false,
        debug_modules: false,
        debug_update: false,
    }
}

/// Test that module handles missing mpc command gracefully.
/// Note: This needs ROOT permissions, hence excluding from normal
/// testing
#[test]
#[ignore]
fn test_missing_mpc_command() {
    let mut module = UnibarModuleMusic::new(create_test_options(true));

    // Temporarily rename mpc command if it exists
    let has_mpc = Command::new("which")
        .arg("mpc")
        .output()
        .map(|output| output.status.success())
        .unwrap_or(false);

    let original_mpc_path = "/usr/bin/mpc";
    let backup_mpc_path = "/tmp/mpc.bak";

    if has_mpc {
        // Create a backup
        std::fs::copy(original_mpc_path, backup_mpc_path).expect("Failed to backup mpc");
        // Rename the original
        std::fs::rename(original_mpc_path, "/tmp/mpc_renamed").expect("Failed to rename mpc");
    }

    // Generate data should not panic
    module.generate_data();

    // Should show appropriate error state
    assert_eq!(module.get_icon(), "⏹");
    assert!(module.get_content().contains("No player"));

    // Restore mpc if it existed
    if has_mpc {
        // Remove the renamed file
        std::fs::remove_file("/tmp/mpc_renamed").expect("Failed to remove renamed mpc");
        // Restore from backup
        std::fs::rename(backup_mpc_path, original_mpc_path).expect("Failed to restore mpc");
    }
}

/// Test handling of mpc command failing
#[test]
fn test_mpc_command_failure() {
    let mut module = UnibarModuleMusic::new(create_test_options(true));

    // Mock mpc command to always fail
    module.current_stdout = "Error: Command not found".to_string();
    module.progress_stdout = "".to_string();
    module.state_stdout = "stopped".to_string();

    // Generate data should not panic
    // module.generate_data();

    // Should show appropriate error state
    assert_eq!(module.get_icon(), "⏹");
    assert!(module.get_content().contains("Command not found"));
}

/// Test handling of various mpc output formats
#[test]
fn test_unexpected_mpc_output() {
    let mut module = UnibarModuleMusic::new(create_test_options(true));

    // Test cases for current_stdout
    let test_cases = vec![
        "",                         // Empty output
        "\n",                      // Just newline
        //"invalid utf8 \x80",       // Invalid UTF-8
        "very\nlong\noutput\n",    // Multiple lines
        " ",                       // Just whitespace
        "🎵 unicode 🎶",           // Unicode characters
    ];

    for test_case in test_cases {
        module.current_stdout = test_case.to_string();
        // get_content should not panic
        let content = module.get_content();
        assert!(!content.is_empty(), "Content should not be empty");
    }
}

/// Test state handling and icon selection
#[test]
fn test_player_states() {
    let mut module = UnibarModuleMusic::new(create_test_options(false));

    // Test valid states
    let states = vec![
        ("playing", "𝄞"),
        ("paused", "⏸"),
        ("stopped", "⏹"),
    ];

    for (state, expected_icon) in states {
        module.state_stdout = state.to_string();
        assert_eq!(module.get_icon(), expected_icon);
    }

    // Test invalid states
    let invalid_states = vec![
        "",
        "invalid",
        "PLAYING",
        "unknown",
        "\n",
        "playing\n",
    ];

    for state in invalid_states {
        module.state_stdout = state.to_string();
        assert_eq!(module.get_icon(), "𝄞", "Invalid state should default to playing icon");
    }
}

/// Test progress display formatting
#[test]
fn test_progress_display() {
    let mut module = UnibarModuleMusic::new(create_test_options(true));

    // Test various progress formats
    let test_cases = vec![
        ("50% 3:30", "[50% 3:30]"),
        ("", "[]"),
        ("invalid", "[invalid]"),
        ("100% 0:00", "[100% 0:00]"),
        ("  50% 3:30  ", "[50% 3:30]"),  // Extra whitespace
    ];

    for (progress, expected) in test_cases {
        module.progress_stdout = progress.to_string();
        module.current_stdout = "Test Song".to_string();
        let content = module.get_content();
        assert!(content.contains(expected));
    }

    // Test with progress disabled
    let mut module = UnibarModuleMusic::new(create_test_options(false));
    module.progress_stdout = "50% 3:30".to_string();
    module.current_stdout = "Test Song".to_string();
    assert_eq!(module.get_content(), "Test Song");
}

/// Test module initialization
#[test]
fn test_module_initialization() {
    let module = UnibarModuleMusic::new(create_test_options(true));

    assert_eq!(module.current_stdout, "");
    assert_eq!(module.progress_stdout, "");
    assert_eq!(module.state_stdout, "stopped");
    assert_eq!(module.get_icon(), "⏹");
}

/// Test clear functionality
#[test]
fn test_clear() {
    let mut module = UnibarModuleMusic::new(create_test_options(true));

    // Set some data
    module.current_stdout = "Test Song".to_string();
    module.progress_stdout = "50% 3:30".to_string();
    module.state_stdout = "playing".to_string();

    // Clear the module
    module.clear();

    // Verify cleared state
    assert_eq!(module.current_stdout, "");
    assert_eq!(module.progress_stdout, "");
    assert_eq!(module.state_stdout, "stopped");
}