tinterm 0.2.0

A powerful library for vibrant solid and gradient text with shimmer animations in terminal outputs.
Documentation 
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mod color;
mod color_presets;
mod gradient;
mod shimmer;
mod text_modifier;

pub use color::Color;
pub use gradient::Gradient;
pub use shimmer::{Shimmer, ShimmerText};
pub use text_modifier::TextModifier;

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_basic_gradient() {
        let result = "test".gradient(Color::RED, Color::BLUE, None);
        assert!(!result.is_empty());
        assert!(result.contains("\x1b[38;2;"));
        assert!(result.contains("\x1b[39m")); // Check reset sequence
    }

    #[test]
    fn test_basic_gradient_bg() {
        let result = "test".gradient_bg(Color::RED, Color::BLUE, None);
        assert!(!result.is_empty());
        assert!(result.contains("\x1b[48;2;"));
        assert!(result.contains("\x1b[49m")); // Check reset sequence
    }

    #[test]
    fn test_empty_string() {
        let result = "".gradient(Color::RED, Color::BLUE, None);
        assert!(result.is_empty());

        let result_bg = "".gradient_bg(Color::RED, Color::BLUE, None);
        assert!(result_bg.is_empty());
    }

    #[test]
    fn test_multiline_block_true() {
        let text = "line1\nline2";
        let result = text.gradient(Color::RED, Color::BLUE, Some(true));
        assert!(result.contains("\n"));
        // Each line should start with its own color sequence
        let lines: Vec<&str> = result.split('\n').collect();
        assert_eq!(lines.len(), 2);
        assert!(lines[0].starts_with("\x1b[38;2;"));
        assert!(lines[1].starts_with("\x1b[38;2;"));
    }

    #[test]
    fn test_multiline_block_false() {
        let text = "line1\nline2";
        let result = text.gradient(Color::RED, Color::BLUE, Some(false));
        assert!(result.contains("\n"));
        // Color should continue across lines
        let lines: Vec<&str> = result.split('\n').collect();
        assert_eq!(lines.len(), 2);
        assert!(lines[0].starts_with("\x1b[38;2;"));
        assert!(lines[1].contains("\x1b[38;2;")); // Second line should contain gradient but not start with it
    }

    #[test]
    fn test_multiline_bg_block_false() {
        let text = "line1\nline2";
        let result = text.gradient_bg(Color::RED, Color::BLUE, Some(false));
        assert!(result.contains("\n"));
        // Should have background reset at end of each line
        assert!(result.contains("\x1b[49m\n"));
        // Color should continue across lines
        let lines: Vec<&str> = result.split('\n').collect();
        assert_eq!(lines.len(), 2);
        assert!(lines[0].contains("\x1b[48;2;"));
        assert!(lines[0].ends_with("\x1b[49m"));
    }

    #[test]
    fn test_gradient_chaining() {
        // Test FG then BG
        let result = "test".gradient(Color::RED, Color::BLUE, None).gradient_bg(
            Color::GREEN,
            Color::YELLOW,
            None,
        );

        // Should contain both FG and BG sequences
        assert!(result.contains("\x1b[38;2;")); // FG
        assert!(result.contains("\x1b[48;2;")); // BG
                                                // Should contain both reset sequences
        assert!(result.contains("\x1b[39m")); // FG reset
        assert!(result.contains("\x1b[49m")); // BG reset

        // Test BG then FG
        let result = "test"
            .gradient_bg(Color::GREEN, Color::YELLOW, None)
            .gradient(Color::RED, Color::BLUE, None);

        // Should contain both FG and BG sequences
        assert!(result.contains("\x1b[38;2;")); // FG
        assert!(result.contains("\x1b[48;2;")); // BG
                                                // Should contain both reset sequences
        assert!(result.contains("\x1b[39m")); // FG reset
        assert!(result.contains("\x1b[49m")); // BG reset
    }

    #[test]
    fn test_with_existing_ansi() {
        // Test with existing bold text
        let bold_text = "test".bold();
        let result = bold_text.gradient(Color::RED, Color::BLUE, None);
        assert!(result.contains("\x1b[1m")); // Bold sequence preserved
        assert!(result.contains("\x1b[38;2;")); // FG color added

        // Test with existing color
        let colored_text = "test".fg(Color::RED);
        let result = colored_text.gradient_bg(Color::GREEN, Color::BLUE, None);
        assert!(result.contains("\x1b[38;2;")); // Original FG color preserved
        assert!(result.contains("\x1b[48;2;")); // BG gradient added
    }

    #[test]
    fn test_special_characters() {
        let text = "test 👍 emoji";
        let result = text.gradient(Color::RED, Color::BLUE, None);
        assert!(!result.is_empty());
        assert!(result.contains("👍"));

        let result_bg = text.gradient_bg(Color::RED, Color::BLUE, None);
        assert!(!result_bg.is_empty());
        assert!(result_bg.contains("👍"));
    }

    #[test]
    fn test_color_interpolation() {
        let color1 = Color::new(255, 0, 0);
        let color2 = Color::new(0, 0, 255);
        let mid = color1.interpolate(&color2, 0.5);
        assert_eq!(mid.r, 127);
        assert_eq!(mid.b, 127);
    }

    #[test]
    fn test_shimmer_creation() {
        let shimmer_text = "Hello World".shimmer(Color::RED, None);
        let rendered = shimmer_text.static_render();
        assert!(!rendered.is_empty());
        assert!(rendered.contains("\x1b[38;2;"));
    }

    #[test]
    fn test_shine_creation() {
        let shine_text = "Shining Text".shine(Color::BLUE);
        let rendered = shine_text.static_render();
        assert!(!rendered.is_empty());
        assert!(rendered.contains("\x1b[38;2;"));
    }

    #[test]
    fn test_glow_creation() {
        let glow_text = "Glowing Text".glow(Color::GREEN, 200);
        let rendered = glow_text.static_render();
        assert!(!rendered.is_empty());
        assert!(rendered.contains("\x1b[38;2;"));
    }

    #[test]
    fn test_shimmer_chaining() {
        let shimmer_text = "Test"
            .shimmer(Color::RED, None)
            .speed(50)
            .background(Color::BLACK)
            .intensity(180);
        let rendered = shimmer_text.static_render();
        assert!(!rendered.is_empty());
    }

    #[test]
    fn test_mixed_content() {
        let text = "line1\nline2";
        let result = text.gradient_bg(Color::RED, Color::BLUE, Some(false));
        assert!(result.contains("\x1b[49m\n")); // Check background reset at newlines
        assert!(result.contains("\n")); // Empty line preserved

        let lines: Vec<&str> = result.split('\n').collect();
        assert_eq!(lines.len(), 2);
        assert!(lines[0].contains("\x1b[48;2;")); // First line has background
    }
}