#!/usr/bin/env bash

# A settings button that calls a target the backend does not handle is a dead
# control: it looks identical to a working one until someone presses it and
# nothing happens. Two dispatch maps in SystemSettings.qml decide whether a
# button lands -- openApplication(id) and openGnomePanel(panel) -- and both
# silently return false on an unknown name. This pins every id and panel a QML
# button passes to being present in those maps.
#
# It exists because two such buttons shipped: "Start Orca" called
# openApplication("orca") with no "orca" in the map, and the dictation card
# called a helper subcommand that did not exist. This catches the first shape;
# the helper-subcommand shape is caught by each service's own contract.

set -uo pipefail

repo_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
qs="$repo_dir/config/dot/quickshell"
sysset="$qs/services/SystemSettings.qml"

fail() { printf 'settings buttons contract: %s\n' "$1" >&2; exit 1; }
[[ -r "$sysset" ]] || fail "missing $sysset"

python3 - "$qs" "$sysset" <<'PY'
import re, sys, pathlib
qs, sysset = pathlib.Path(sys.argv[1]), pathlib.Path(sys.argv[2])
text = sysset.read_text()

# openApplication's command map keys.
m = re.search(r'function openApplication.*?const commands = \{(.*?)\};', text, re.S)
app_ids = set(re.findall(r'"([a-z0-9-]+)"\s*:', m.group(1))) if m else set()

# openGnomePanel's allow-list.
m = re.search(r'isGnomePanelAllowed.*?return \[(.*?)\]\.indexOf', text, re.S)
panels = set(re.findall(r'"([a-z-]+)"', m.group(1))) if m else set()

problems = []
for page in sorted((qs/'modules').rglob('*.qml')):
    t = page.read_text()
    for app_id in re.findall(r'openApplication\("([^"]+)"\)', t):
        if app_id not in app_ids:
            problems.append(f'{page.name}: openApplication("{app_id}") -- not in the command map, so the button does nothing')
    for panel in re.findall(r'openGnomePanel\("([a-z-]+)"', t):
        if panel not in panels:
            problems.append(f'{page.name}: openGnomePanel("{panel}") -- not allow-listed, so the handoff opens nothing')

if problems:
    print(f"settings buttons contract: {len(problems)} dead button(s)")
    for p in problems: print("  -", p)
    sys.exit(1)
print(f"settings buttons contract: ok ({len(app_ids)} app ids, {len(panels)} panels, every button resolves)")
PY