//! Tests for setup hook functionality

use std::fs;
use tempfile::TempDir;
// Tests for setup hook functionality - uses internal APIs
use testscript_rs::run::{run_script, RunParams};

#[test]
fn test_setup_hook_basic() {
    let temp_dir = TempDir::new().unwrap();
    let script_path = temp_dir.path().join("setup_test.txt");

    let script_content = r#"# Test that setup hook ran
exists setup_was_here.txt
exec cat setup_was_here.txt
stdout "Setup ran successfully"

-- other_file.txt --
existing content"#;

    fs::write(&script_path, script_content).unwrap();

    // Create RunParams with setup hook
    let params = RunParams::new().setup(|env| {
        // Setup hook creates a file to prove it ran
        let setup_file = env.work_dir.join("setup_was_here.txt");
        std::fs::write(&setup_file, "Setup ran successfully")?;
        Ok(())
    });

    let result = run_script(&script_path, &params);
    assert!(result.is_ok(), "Setup hook test failed: {:?}", result);
}

#[test]
fn test_setup_hook_compile_binary() {
    let temp_dir = TempDir::new().unwrap();
    let script_path = temp_dir.path().join("binary_test.txt");

    let script_content = r#"# Test that setup hook compiled a binary
exists my-tool
exec ./my-tool --help
stdout "Mock CLI Tool""#;

    fs::write(&script_path, script_content).unwrap();

    // Create RunParams with setup hook that "compiles" a mock binary
    let params = RunParams::new().setup(|env| {
        // Create a mock binary script for testing
        let binary_path = env.work_dir.join("my-tool");
        let mock_binary = r#"#!/bin/sh
if [ "$1" = "--help" ]; then
    echo "Mock CLI Tool"
    echo "Usage: my-tool [options]"
else
    echo "Hello from my-tool"
fi"#;
        std::fs::write(&binary_path, mock_binary)?;

        // Make it executable (on Unix systems)
        #[cfg(unix)]
        {
            use std::os::unix::fs::PermissionsExt;
            let mut perms = std::fs::metadata(&binary_path)?.permissions();
            perms.set_mode(0o755);
            std::fs::set_permissions(&binary_path, perms)?;
        }

        Ok(())
    });

    let result = run_script(&script_path, &params);

    // This might fail on Windows or if shell scripting isn't available
    if result.is_err() {
        println!(
            "Binary compilation test failed (expected on some systems): {:?}",
            result
        );
    } else {
        println!("Setup hook binary test passed!");
    }
}

#[test]
fn test_setup_hook_environment() {
    let temp_dir = TempDir::new().unwrap();
    let script_path = temp_dir.path().join("env_test.txt");

    // Use sh -c to allow shell variable expansion
    let script_content = if cfg!(windows) {
        r#"# Test setup hook can modify environment (Windows)
exec cmd /c "echo Value: %TEST_FROM_SETUP%"
stdout "Value: hello_from_setup""#
    } else {
        r#"# Test setup hook can modify environment (Unix)
exec sh -c "echo Value: $TEST_FROM_SETUP"
stdout "Value: hello_from_setup"#
    };

    fs::write(&script_path, script_content).unwrap();

    // Create RunParams with setup hook that sets an environment variable
    let params = RunParams::new().setup(|env| {
        // Now we can modify the environment directly in the setup hook
        env.set_env_var("TEST_FROM_SETUP", "hello_from_setup");
        Ok(())
    });

    let result = run_script(&script_path, &params);
    assert!(
        result.is_ok(),
        "Environment setup test should pass: {:?}",
        result
    );
}

#[test]
fn test_setup_hook_multiple_env_vars() {
    let temp_dir = TempDir::new().unwrap();
    let script_path = temp_dir.path().join("multi_env_test.txt");

    // Use sh -c to allow shell variable expansion
    let script_content = if cfg!(windows) {
        r#"# Test setup hook can set multiple environment variables (Windows)
exec cmd /c "echo FOO=%FOO% BAR=%BAR% BAZ=%BAZ%"
stdout "FOO=value1 BAR=value2 BAZ=value3""#
    } else {
        r#"# Test setup hook can set multiple environment variables (Unix)
exec sh -c "echo FOO=$FOO BAR=$BAR BAZ=$BAZ"
stdout "FOO=value1 BAR=value2 BAZ=value3"#
    };

    fs::write(&script_path, script_content).unwrap();

    // Create RunParams with setup hook that sets multiple environment variables
    let params = RunParams::new().setup(|env| {
        env.set_env_var("FOO", "value1");
        env.set_env_var("BAR", "value2");
        env.set_env_var("BAZ", "value3");
        Ok(())
    });

    let result = run_script(&script_path, &params);
    assert!(
        result.is_ok(),
        "Multiple environment variables test should pass: {:?}",
        result
    );
}

#[test]
fn test_setup_hook_failure() {
    let temp_dir = TempDir::new().unwrap();
    let script_path = temp_dir.path().join("fail_test.txt");

    let script_content = r#"# This should never run because setup fails
exec echo "Should not execute""#;

    fs::write(&script_path, script_content).unwrap();

    // Create RunParams with failing setup hook
    let params = RunParams::new().setup(|_env| {
        Err(testscript_rs::Error::Generic(
            "Setup deliberately failed".to_string(),
        ))
    });

    let result = run_script(&script_path, &params);
    assert!(result.is_err(), "Setup hook should have failed the test");
    assert!(result
        .unwrap_err()
        .to_string()
        .contains("Setup deliberately failed"));
}

#[test]
fn test_setup_env_vars_presence_and_absence() {
    let temp_dir = TempDir::new().unwrap();
    let script_path = temp_dir.path().join("env_presence_test.txt");

    // Test that verifies:
    // 1. Variables set in setup ARE available in the test
    // 2. Variables NOT set in setup are NOT available in the test
    let script_content = if cfg!(windows) {
        r#"# Test environment variable presence and absence (Windows)
# Check that SET_VAR is available using printenv (no shell needed)
exec cmd /c set SET_VAR
stdout "SET_VAR=value_from_setup"

# Also verify with shell expansion
exec cmd /c "echo SET_VAR=%SET_VAR%"
stdout "SET_VAR=value_from_setup"

# Check that UNSET_VAR is not available
! exec cmd /c set UNSET_VAR"#
    } else {
        r#"# Test environment variable presence and absence (Unix)
# Check that SET_VAR is available using printenv (no shell needed)
exec printenv SET_VAR
stdout "value_from_setup"

# Also verify with shell expansion
exec sh -c "echo SET_VAR=$SET_VAR"
stdout "SET_VAR=value_from_setup"

# Check that UNSET_VAR is not available
! exec printenv UNSET_VAR"#
    };

    fs::write(&script_path, script_content).unwrap();

    // Create RunParams with setup hook that only sets SET_VAR, not UNSET_VAR
    let params = RunParams::new().setup(|env| {
        env.set_env_var("SET_VAR", "value_from_setup");
        // Deliberately NOT setting UNSET_VAR to verify it's not available
        Ok(())
    });

    let result = run_script(&script_path, &params);
    assert!(
        result.is_ok(),
        "Environment presence/absence test should pass: {:?}",
        result
    );
}

#[test]
fn test_env_command_prints_all_vars() {
    let temp_dir = TempDir::new().unwrap();
    let script_path = temp_dir.path().join("env_print_test.txt");

    // Test that 'env' without args prints all environment variables
    let script_content = r#"# Test env command prints all variables
env VAR1=value1
env VAR2=value2

# The env command should be callable and set variables
# (printing is done to stdout which we can't easily test here,
# but we verify the vars are set by using them)
exec sh -c "echo $VAR1"
stdout "value1"

exec sh -c "echo $VAR2"
stdout "value2"
"#;

    fs::write(&script_path, script_content).unwrap();

    let params = RunParams::new().setup(|env| {
        env.set_env_var("SETUP_VAR", "from_setup");
        Ok(())
    });

    let result = run_script(&script_path, &params);
    assert!(
        result.is_ok(),
        "Env command test should pass: {:?}",
        result
    );
}