office-rs 0.1.1

mod xml;

pub use xml::*;
use std::collections::HashMap;

#[derive(Debug, Clone, PartialEq)]
pub struct Font {
    pub name: String,
    pub size: f64,
    pub bold: bool,
    pub italic: bool,
    pub underline: Option<UnderlineStyle>,
    pub color: Option<Color>,
}

#[derive(Debug, Clone, PartialEq)]
pub enum UnderlineStyle {
    Single,
    Double,
    SingleAccounting,
    DoubleAccounting,
}

#[derive(Debug, Clone, PartialEq)]
pub struct Color {
    pub rgb: String, // ARGB format: "FFRRGGBB"
}

impl Color {
    pub fn new(rgb: &str) -> Self {
        Self {
            rgb: rgb.to_string(),
        }
    }

    pub fn from_rgb(r: u8, g: u8, b: u8) -> Self {
        Self {
            rgb: format!("FF{:02X}{:02X}{:02X}", r, g, b),
        }
    }

    pub fn from_argb(a: u8, r: u8, g: u8, b: u8) -> Self {
        Self {
            rgb: format!("{:02X}{:02X}{:02X}{:02X}", a, r, g, b),
        }
    }

    pub fn is_valid(&self) -> bool {
        self.rgb.len() == 8 && self.rgb.chars().all(|c| c.is_ascii_hexdigit())
    }

    // 常用颜色常量
    pub const BLACK: &'static str = "FF000000";
    pub const WHITE: &'static str = "FFFFFFFF";
    pub const RED: &'static str = "FFFF0000";
    pub const GREEN: &'static str = "FF00FF00";
    pub const BLUE: &'static str = "FF0000FF";
    pub const GRAY: &'static str = "FF808080";

    // 从常量创建颜色
    pub fn black() -> Self {
        Self::new(Self::BLACK)
    }

    pub fn white() -> Self {
        Self::new(Self::WHITE)
    }

    pub fn red() -> Self {
        Self::new(Self::RED)
    }

    pub fn green() -> Self {
        Self::new(Self::GREEN)
    }

    pub fn blue() -> Self {
        Self::new(Self::BLUE)
    }

    pub fn gray() -> Self {
        Self::new(Self::GRAY)
    }

    // 获取颜色分量
    pub fn get_components(&self) -> Option<(u8, u8, u8, u8)> {
        if !self.is_valid() {
            return None;
        }

        let a = u8::from_str_radix(&self.rgb[0..2], 16).ok()?;
        let r = u8::from_str_radix(&self.rgb[2..4], 16).ok()?;
        let g = u8::from_str_radix(&self.rgb[4..6], 16).ok()?;
        let b = u8::from_str_radix(&self.rgb[6..8], 16).ok()?;

        Some((a, r, g, b))
    }

    // 设置透明度
    pub fn with_alpha(&self, alpha: u8) -> Self {
        if let Some((_, r, g, b)) = self.get_components() {
            Self::from_argb(alpha, r, g, b)
        } else {
            self.clone()
        }
    }

    // 检查颜色是否完全透明
    pub fn is_transparent(&self) -> bool {
        self.get_components()
            .map(|(a, _, _, _)| a == 0)
            .unwrap_or(false)
    }
}

#[derive(Debug, Clone, PartialEq)]
pub struct Border {
    pub left: BorderStyle,
    pub right: BorderStyle,
    pub top: BorderStyle,
    pub bottom: BorderStyle,
    pub diagonal: BorderStyle,
}

#[derive(Debug, Clone, PartialEq)]
pub struct BorderStyle {
    pub style: Option<LineStyle>,
    pub color: Option<Color>,
}

#[derive(Debug, Clone, PartialEq)]
pub enum LineStyle {
    None,
    Thin,
    Medium,
    Thick,
    Double,
    Dotted,
    Dashed,
}

#[derive(Debug, Clone, PartialEq)]
pub struct Fill {
    pub pattern_type: PatternType,
    pub fg_color: Option<Color>,
    pub bg_color: Option<Color>,
}

#[derive(Debug, Clone, PartialEq)]
pub enum PatternType {
    None,
    Solid,
    MediumGray,
    DarkGray,
    LightGray,
    // 可以添加更多填充模式
}

#[derive(Debug, Clone, PartialEq)]
pub struct Alignment {
    pub horizontal: HorizontalAlignment,
    pub vertical: VerticalAlignment,
    pub wrap_text: bool,
    pub text_rotation: i32,
    pub indent: u32,
}

#[derive(Debug, Clone, PartialEq)]
pub enum HorizontalAlignment {
    Left,
    Center,
    Right,
    Fill,
    Justify,
    CenterContinuous,
    Distributed,
}

#[derive(Debug, Clone, PartialEq)]
pub enum VerticalAlignment {
    Top,
    Center,
    Bottom,
    Justify,
    Distributed,
}

#[derive(Debug, Clone)]
pub struct CellStyle {
    pub font: Option<Font>,
    pub fill: Option<Fill>,
    pub border: Option<Border>,
    pub alignment: Option<Alignment>,
    pub number_format: Option<String>,
    pub protection: Option<Protection>,
}

#[derive(Debug, Clone, PartialEq)]
pub struct Protection {
    pub locked: bool,
    pub hidden: bool,
}

pub struct StylesManager {
    styles: Vec<CellStyle>,
    style_index_map: HashMap<String, usize>,
}

impl StylesManager {
    pub fn new() -> Self {
        Self {
            styles: Vec::new(),
            style_index_map: HashMap::new(),
        }
    }

    pub fn add_style(&mut self, style: CellStyle) -> usize {
        let style_hash = self.compute_style_hash(&style);
        if let Some(&index) = self.style_index_map.get(&style_hash) {
            return index;
        }

        let index = self.styles.len();
        self.styles.push(style);
        self.style_index_map.insert(style_hash, index);
        index
    }

    pub fn get_style(&self, index: usize) -> Option<&CellStyle> {
        self.styles.get(index)
    }

    fn compute_style_hash(&self, style: &CellStyle) -> String {
        use std::collections::hash_map::DefaultHasher;
        use std::hash::{ Hash, Hasher };

        let mut hasher = DefaultHasher::new();

        // Hash font properties
        if let Some(font) = &style.font {
            font.name.hash(&mut hasher);
            font.size.to_bits().hash(&mut hasher);
            font.bold.hash(&mut hasher);
            font.italic.hash(&mut hasher);
            if let Some(color) = &font.color {
                color.rgb.hash(&mut hasher);
            }
        }

        // Hash fill properties
        if let Some(fill) = &style.fill {
            std::mem::discriminant(&fill.pattern_type).hash(&mut hasher);
            if let Some(fg) = &fill.fg_color {
                fg.rgb.hash(&mut hasher);
            }
            if let Some(bg) = &fill.bg_color {
                bg.rgb.hash(&mut hasher);
            }
        }

        // Hash border properties
        if let Some(border) = &style.border {
            for side in [
                &border.left,
                &border.right,
                &border.top,
                &border.bottom,
                &border.diagonal,
            ] {
                if let Some(style) = &side.style {
                    std::mem::discriminant(style).hash(&mut hasher);
                }
                if let Some(color) = &side.color {
                    color.rgb.hash(&mut hasher);
                }
            }
        }

        // Hash alignment properties
        if let Some(align) = &style.alignment {
            std::mem::discriminant(&align.horizontal).hash(&mut hasher);
            std::mem::discriminant(&align.vertical).hash(&mut hasher);
            align.wrap_text.hash(&mut hasher);
            align.text_rotation.hash(&mut hasher);
            align.indent.hash(&mut hasher);
        }

        format!("{:016x}", hasher.finish())
    }
}

impl Default for CellStyle {
    fn default() -> Self {
        Self {
            font: None,
            fill: None,
            border: None,
            alignment: None,
            number_format: None,
            protection: None,
        }
    }
}

impl CellStyle {
    pub fn new() -> Self {
        Self::default()
    }

    pub fn with_font(mut self, font: Font) -> Self {
        self.font = Some(font);
        self
    }

    pub fn with_fill(mut self, fill: Fill) -> Self {
        self.fill = Some(fill);
        self
    }

    pub fn with_border(mut self, border: Border) -> Self {
        self.border = Some(border);
        self
    }

    pub fn with_alignment(mut self, alignment: Alignment) -> Self {
        self.alignment = Some(alignment);
        self
    }

    pub fn with_number_format(mut self, format: String) -> Self {
        self.number_format = Some(format);
        self
    }

    pub fn with_protection(mut self, protection: Protection) -> Self {
        self.protection = Some(protection);
        self
    }

    pub fn default_header() -> Self {
        Self::new()
            .with_font(Font {
                name: "Arial".to_string(),
                size: 12.0,
                bold: true,
                italic: false,
                underline: None,
                color: Some(Color::from_rgb(0, 0, 0)),
            })
            .with_alignment(Alignment {
                horizontal: HorizontalAlignment::Center,
                vertical: VerticalAlignment::Center,
                wrap_text: true,
                text_rotation: 0,
                indent: 0,
            })
            .with_border(Border {
                left: BorderStyle {
                    style: Some(LineStyle::Thin),
                    color: Some(Color::from_rgb(0, 0, 0)),
                },
                right: BorderStyle {
                    style: Some(LineStyle::Thin),
                    color: Some(Color::from_rgb(0, 0, 0)),
                },
                top: BorderStyle {
                    style: Some(LineStyle::Thin),
                    color: Some(Color::from_rgb(0, 0, 0)),
                },
                bottom: BorderStyle {
                    style: Some(LineStyle::Thin),
                    color: Some(Color::from_rgb(0, 0, 0)),
                },
                diagonal: BorderStyle {
                    style: None,
                    color: None,
                },
            })
    }

    pub fn default_body() -> Self {
        Self::new()
            .with_font(Font {
                name: "Arial".to_string(),
                size: 11.0,
                bold: false,
                italic: false,
                underline: None,
                color: Some(Color::from_rgb(0, 0, 0)),
            })
            .with_alignment(Alignment {
                horizontal: HorizontalAlignment::Left,
                vertical: VerticalAlignment::Center,
                wrap_text: false,
                text_rotation: 0,
                indent: 0,
            })
    }
}

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

    #[test]
    fn test_color_creation() {
        let color = Color::from_rgb(255, 128, 0);
        assert_eq!(color.rgb, "FFFF8000");

        let color = Color::from_argb(128, 255, 128, 0);
        assert_eq!(color.rgb, "80FF8000");
    }

    #[test]
    fn test_style_manager() {
        let mut manager = StylesManager::new();

        let style1 = CellStyle::default_header();
        let style2 = CellStyle::default_header();
        let style3 = CellStyle::default_body();

        let index1 = manager.add_style(style1.clone());
        let index2 = manager.add_style(style2);
        let index3 = manager.add_style(style3);

        // Same styles should return same index
        assert_eq!(index1, index2);
        // Different styles should have different indices
        assert_ne!(index1, index3);
    }

    #[test]
    fn test_color_components() {
        let color = Color::from_argb(128, 255, 128, 0);
        assert_eq!(color.get_components(), Some((128, 255, 128, 0)));
    }

    #[test]
    fn test_color_constants() {
        assert_eq!(Color::black().rgb, "FF000000");
        assert_eq!(Color::white().rgb, "FFFFFFFF");
        assert_eq!(Color::red().rgb, "FFFF0000");
    }

    #[test]
    fn test_color_transparency() {
        let color = Color::red();
        assert!(!color.is_transparent());

        let transparent = color.with_alpha(0);
        assert!(transparent.is_transparent());
    }

    #[test]
    fn test_invalid_color() {
        let invalid_color = Color::new("invalid");
        assert!(!invalid_color.is_valid());
        assert_eq!(invalid_color.get_components(), None);
    }
}