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use serde::Serialize;

use crate::documents::BuildXML;
use crate::types::*;
use crate::xml_builder::*;

/*
    Please see. L.4.3.2.18 Cell Border Properties

    left – left border
    right – right border
    top – top border
    bottom – bottom border
    insideH – inner horizontal borders
    insideV – inner vertical borders
    tl2br – diagonal border from top left corner to bottom right corner
    tr2bl – diagonal border from top right corner to bottom left corner
*/

#[derive(Debug, Clone, PartialEq, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct TableBorder {
    position: BorderPosition,
    border_type: BorderType,
    size: usize,
    space: usize,
    color: String,
}

impl TableBorder {
    pub fn new(position: BorderPosition) -> TableBorder {
        TableBorder {
            position,
            border_type: BorderType::Single,
            size: 2,
            space: 0,
            color: "000000".to_owned(),
        }
    }

    pub fn color(mut self, color: impl Into<String>) -> TableBorder {
        self.color = color.into();
        self
    }
}

impl BuildXML for TableBorder {
    fn build(&self) -> Vec<u8> {
        let base = XMLBuilder::new();
        let base = match self.position {
            BorderPosition::Top => {
                base.border_top(self.border_type, self.size, self.space, &self.color)
            }
            BorderPosition::Left => {
                base.border_left(self.border_type, self.size, self.space, &self.color)
            }
            BorderPosition::Bottom => {
                base.border_bottom(self.border_type, self.size, self.space, &self.color)
            }
            BorderPosition::Right => {
                base.border_right(self.border_type, self.size, self.space, &self.color)
            }
            BorderPosition::InsideH => {
                base.border_inside_h(self.border_type, self.size, self.space, &self.color)
            }
            BorderPosition::InsideV => {
                base.border_inside_v(self.border_type, self.size, self.space, &self.color)
            }
        };
        base.build()
    }
}

// 17.4.39
// tblBorders (Table Borders Exceptions)
// This element specifies the set of borders for the edges of the parent table row via a set of table-level property
// exceptions, using the six border types defined by its child elements.
// If the cell spacing for any row is non-zero as specified using the tblCellSpacing element (§17.4.44; §17.4.43;
// §17.4.45), then there is no border conflict and the table-level exception border shall be displayed.
// If the cell spacing is zero, then there is a conflict [Example: Between the left border of all cells in the first column
// and the left border of the table-level exceptions. end example], which shall be resolved as follows:
// If there is a cell border, then the cell border shall be displayed
// If there is no cell border, then the table-level exception border shall be displayed
// If this element is omitted, then this table shall have the borders specified by the associated table level borders
// (§17.4.38).
#[derive(Debug, Clone, PartialEq, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct TableBorders {
    top: Option<TableBorder>,
    left: Option<TableBorder>,
    bottom: Option<TableBorder>,
    right: Option<TableBorder>,
    inside_h: Option<TableBorder>,
    inside_v: Option<TableBorder>,
}

impl Default for TableBorders {
    fn default() -> TableBorders {
        TableBorders {
            top: Some(TableBorder::new(BorderPosition::Top)),
            left: Some(TableBorder::new(BorderPosition::Left)),
            bottom: Some(TableBorder::new(BorderPosition::Bottom)),
            right: Some(TableBorder::new(BorderPosition::Right)),
            inside_h: Some(TableBorder::new(BorderPosition::InsideH)),
            inside_v: Some(TableBorder::new(BorderPosition::InsideV)),
        }
    }
}

impl TableBorders {
    pub fn new() -> TableBorders {
        Default::default()
    }

    pub fn set_border(mut self, border: TableBorder) -> Self {
        match border.position {
            BorderPosition::Top => self.top = Some(border),
            BorderPosition::Left => self.left = Some(border),
            BorderPosition::Bottom => self.bottom = Some(border),
            BorderPosition::Right => self.right = Some(border),
            BorderPosition::InsideH => self.inside_h = Some(border),
            BorderPosition::InsideV => self.inside_v = Some(border),
        };
        self
    }

    pub fn clear_border(mut self, position: BorderPosition) -> Self {
        match position {
            BorderPosition::Top => self.top = None,
            BorderPosition::Left => self.left = None,
            BorderPosition::Bottom => self.bottom = None,
            BorderPosition::Right => self.right = None,
            BorderPosition::InsideH => self.inside_h = None,
            BorderPosition::InsideV => self.inside_v = None,
        };
        self
    }
}

impl BuildXML for TableBorders {
    fn build(&self) -> Vec<u8> {
        XMLBuilder::new()
            .open_table_borders()
            .add_optional_child(&self.top)
            .add_optional_child(&self.left)
            .add_optional_child(&self.bottom)
            .add_optional_child(&self.right)
            .add_optional_child(&self.inside_h)
            .add_optional_child(&self.inside_v)
            .close()
            .build()
    }
}

#[cfg(test)]
mod tests {

    use super::*;
    #[cfg(test)]
    use pretty_assertions::assert_eq;
    use std::str;

    #[test]
    fn test_table_borders() {
        let b = TableBorders::new().build();
        assert_eq!(
            str::from_utf8(&b).unwrap(),
            r#"<w:tblBorders><w:top w:val="single" w:sz="2" w:space="0" w:color="000000" /><w:left w:val="single" w:sz="2" w:space="0" w:color="000000" /><w:bottom w:val="single" w:sz="2" w:space="0" w:color="000000" /><w:right w:val="single" w:sz="2" w:space="0" w:color="000000" /><w:insideH w:val="single" w:sz="2" w:space="0" w:color="000000" /><w:insideV w:val="single" w:sz="2" w:space="0" w:color="000000" /></w:tblBorders>"#
        );
    }

    #[test]
    fn test_table_borders_set() {
        let b = TableBorders::new()
            .set_border(TableBorder::new(BorderPosition::Left).color("AAAAAA"))
            .clear_border(BorderPosition::Top)
            .build();
        assert_eq!(
            str::from_utf8(&b).unwrap(),
            r#"<w:tblBorders><w:left w:val="single" w:sz="2" w:space="0" w:color="AAAAAA" /><w:bottom w:val="single" w:sz="2" w:space="0" w:color="000000" /><w:right w:val="single" w:sz="2" w:space="0" w:color="000000" /><w:insideH w:val="single" w:sz="2" w:space="0" w:color="000000" /><w:insideV w:val="single" w:sz="2" w:space="0" w:color="000000" /></w:tblBorders>"#
        );
    }
}