use cell::{Cell, CellRef};

pub mod cell;
pub mod map;
pub mod register;
pub mod luaref;
pub mod loader;
pub mod tablized;

#[derive(Debug, Default)]
pub struct Sheet {
    id: register::SheetId,
    rows: Vec<Vec<Cell>>,
}

impl Sheet {
    pub(self) fn new(width: usize, height: usize, id: register::SheetId) -> Self {
        Self {
            id,
            rows: vec![vec![Cell::new_empty(); width]; height],
        }
    }

    pub fn set_cell(&mut self, row: usize, column: usize, cell: Cell) {
        if row < self.height() && column < self.width() {
            self.rows[row][column] = cell
        }
    }

    pub fn get_cell(&self, row: usize, column: usize) -> Option<&Cell> {
        if let Some(r) = self.rows.get(row) {
            if r.get(column).is_some() {
                return Some(&self.rows[row][column]);
            }
        }

        None
    }

    pub fn get_ref(&self, row: usize, column: usize) -> Option<CellRef> {
        self.get_cell(row, column)
            .map(|cell| unsafe { CellRef::new(self.id, row, column, cell.clone()) })
    }

    pub fn height(&self) -> usize {
        self.rows.len()
    }

    pub fn set_height(&mut self, mut height: usize) {
        height = height.max(1);
        self.rows
            .resize(height, vec![Cell::new_empty(); self.width()])
    }

    pub fn width(&self) -> usize {
        self.rows.first().map(|r| r.len()).unwrap_or(1)
    }

    pub fn set_width(&mut self, mut width: usize) {
        width = width.max(1);
        for row in self.rows.iter_mut() {
            row.resize(width, Cell::new_empty());
        }
    }

    pub fn id(&self) -> register::SheetId {
        self.id
    }

    pub fn apply(&mut self, other: Sheet) {
        self.rows = other.rows;
    }
}

impl Clone for Sheet {
    fn clone(&self) -> Self {
        Sheet {
            id: self.id,
            rows: self.rows.clone(),
        }
    }
}