#!/usr/bin/env python3
"""Check startup/runtime SDL Font name:size requests through an isolated 9P session."""
import argparse
from pathlib import Path

from fs import execute, new_pane, session
from ui_review import capture, panes, require, wait_for


def run(args):
    root = args.output.resolve()
    root.mkdir(parents=True, mode=0o700, exist_ok=True)
    root.chmod(0o700)
    config = root / 'config/pardes'
    config.mkdir(parents=True, exist_ok=True)
    (config / 'init').write_text(f'Shell /bin/sh\nTheme orchard\nFont {args.font}:18\nTaglineSize 80\n')
    name = 'font-size'
    launch = ['-c', 'stty cols 150 rows 48; exec "$@"', name,
              str(args.binary.resolve()), '--9p=' + name]
    inherited = {'PARDES_TEST': '1', 'PARDES_TEST_CAPTURE_DIR': str(root),
                 'PARDES_TEST_COLS': '150', 'PARDES_TEST_ROWS': '48',
                 'SDL_VIDEODRIVER': 'x11'}
    with session('/bin/sh', root, name, socket_name=name, tty=True,
                 launch=launch, inherited=inherited) as (client, _):
        control = new_pane(client, b'')

        def report(size):
            execute(client, control, 'Config')
            def ready():
                for serial, tag in panes(client).items():
                    if '/+Config ' in tag:
                        body = client.read(f'/pane/{serial}/body').decode()
                        if f'Font effective size {size:.2f} pixels' in body:
                            return body
                return None
            return require(wait_for(ready), f'Font did not become {size} pixels')

        initial = report(18)
        require('Font requested size 18.00' in initial, 'startup size suffix ignored')
        require(args.font in initial, 'requested font missing')
        execute(client, control, f'Font {args.font}:20.5')
        require('Font requested size 20.50' in report(20.5), 'fractional size ignored')
        execute(client, control, f'Font {args.font}')
        report(20.5)  # no suffix preserves current size
        execute(client, control, f'Font {args.font}:900')
        report(20.5)  # invalid request cannot partially change the font
        execute(client, control, 'Font DefinitelyMissingPardesFont:12')
        report(20.5)
        execute(client, control, f'Font {args.font}:18')
        final = report(18)
        (root / 'font-report.txt').write_text(final)
        capture(client, root, 'font-size-18', True)
    print('Font startup, fractional size, omitted size and invalid requests passed')


if __name__ == '__main__':
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument('binary', type=Path)
    parser.add_argument('output', type=Path)
    parser.add_argument('--font', default='MartianMono-NrRg')
    run(parser.parse_args())