"""ASCII emitter — read CharGrid and output plain text.

Reads only cell.char from each cell. No color, no style tags.
"""

from __future__ import annotations

from uframe.grid import CharGrid


def emit_ascii(grid: CharGrid) -> str:
    """Emit the CharGrid as plain ASCII text."""
    lines: list[str] = []
    for row in range(grid.height):
        line = "".join(cell.char for cell in grid.cells[row]).rstrip()
        lines.append(line)

    # Strip trailing blank lines
    while lines and not lines[-1]:
        lines.pop()

    return "\n".join(lines)