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use hashbrown::HashMap;
use structs::Row;
use traits::AdjustmentValue;

#[derive(Clone, Default, Debug)]
pub(crate) struct Rows {
    rows: HashMap<u32, Row>,
}
impl Rows {
    pub(crate) fn has_sheet_data(&self) -> bool {
        !self.rows.is_empty()
    }

    /// Get Row Dimension List.
    pub(crate) fn get_row_dimensions(&self) -> Vec<&Row> {
        self.rows.values().collect()
    }

    /// Get Row Dimension List in mutable.
    pub(crate) fn get_row_dimensions_mut(&mut self) -> Vec<&mut Row> {
        self.rows.values_mut().collect()
    }

    /// Get Row Dimension convert Hashmap.
    pub(crate) fn get_row_dimensions_to_hashmap(&self) -> &HashMap<u32, Row> {
        &self.rows
    }

    pub(crate) fn get_row_dimensions_to_hashmap_mut(&mut self) -> &mut HashMap<u32, Row> {
        &mut self.rows
    }

    /// Get Row Dimension.
    pub(crate) fn get_row_dimension(&self, row: &u32) -> Option<&Row> {
        self.rows.get(row)
    }

    /// Get Row Dimension in mutable.
    pub(crate) fn get_row_dimension_mut(&mut self, row: &u32) -> &mut Row {
        self.rows.entry(row.to_owned()).or_insert_with(|| {
            let mut obj = Row::default();
            obj.set_row_num(*row);
            obj
        })
    }

    /// (This method is crate only.)
    /// Set Row Dimension.
    pub(crate) fn set_row_dimension(&mut self, value: Row) -> &mut Self {
        let row = value.get_row_num();
        self.rows.insert(row.to_owned(), value);
        self
    }

    pub(crate) fn rebuild_map(&mut self) {
        self.rows = self
            .get_row_dimensions_to_hashmap_mut()
            .iter_mut()
            .map(|(_, row)| (*row.get_row_num(), std::mem::take(row)))
            .collect();
    }
}
impl AdjustmentValue for Rows {
    fn adjustment_insert_value(&mut self, root_num: &u32, offset_num: &u32) {
        for row_dimension in self.get_row_dimensions_mut() {
            row_dimension.adjustment_insert_value(root_num, offset_num);
        }
        self.rebuild_map();
    }

    fn adjustment_remove_value(&mut self, root_num: &u32, offset_num: &u32) {
        self.get_row_dimensions_to_hashmap_mut()
            .retain(|_, k| !(k.is_remove_value(root_num, offset_num)));
        for row_dimension in self.get_row_dimensions_mut() {
            row_dimension.adjustment_remove_value(root_num, offset_num);
        }
        self.rebuild_map();
    }
}