package buf2d

import (
	"fmt"
	"strings"
)

// WriteString writes a whole string to the buffer at position (x,y)
// no word wrap is applied at all. If the string does not fit, it will be truncated
func (b *Buffer) WriteString(str string, x, y int) {
	dx := x
	for _, r := range str {
		if dx >= b.width {
			return
		}
		b.Set(dx, y, newStringerFromRune(r))
		dx++
	}
}

// WriteMultiLineString writes a multi-line string to the buffer at position (x,y)
// no word wrap is applied at all. If a line does not fit horizontally, it will be truncated
// All lines which do not fit vertically will be truncated as well
func (b *Buffer) WriteMultiLineString(str string, x, y int) {
	lines := strings.Split(str, "\n")
	for dy, line := range lines {
		if dy >= b.height {
			return
		}

		b.WriteString(line, x, y+dy)
	}
}

// Fill fills the whole buffer with c
func (b *Buffer) Fill(c fmt.Stringer) {
	for _, col := range b.data {
		for ri := range col {
			col[ri] = c
		}
	}
}