#!/usr/bin/env bash

# The first thing a new machine shows.
#
# Panama has thirty settings pages, which is the opposite of the usual problem:
# somebody arriving from another desktop cannot tell which few things matter.
# This is those few things, once.
#
# What must hold:
#
#   1. The chords come from the live keymap. A welcome screen that teaches the
#      wrong keys is worse than none, and it is the one surface read by
#      somebody with no way to tell it is wrong.
#   2. It is shown once and dismissing marks it. A desktop that reintroduces
#      itself every login has failed to take no for an answer.
#   3. Dismissing by ANY route counts, including Escape.
#   4. It stays reachable afterwards. The moment somebody wants it again is
#      exactly when a one-shot has thrown it away.
#   5. It does NOT close on a click outside, unlike every other surface here.
#      A stray click in the first thirty seconds would throw away the only
#      explanation on offer.
#
# The live half opens the real surface. It deliberately does not exercise the
# dismiss path, because that would write to the running machine's settings and
# there is no honest way to put it back.

set -uo pipefail

repo_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
module="$repo_dir/config/dot/quickshell/modules/welcome"
welcome="$module/Welcome.qml"
shell_qml="$repo_dir/config/dot/quickshell/shell.qml"
state="$repo_dir/config/dot/quickshell/services/ShellState.qml"
schema="$repo_dir/config/dot/quickshell/config/PreferenceSchema.qml"
command_file="$repo_dir/config/local/share/vicinae/scripts/show-welcome"

findings=()
note() { findings+=("$1"); }

[[ -r "$welcome" ]] || { printf 'welcome contract: %s is missing\n' "$welcome" >&2; exit 1; }

# ── The module ───────────────────────────────────────────────────────────────

grep -q '^Welcome 1.0 Welcome.qml$' "$module/qmldir" \
    || note 'Welcome is not registered in its qmldir, so the shell would fail to load entirely'

# ── 1. The keys it teaches are the keys you have ─────────────────────────────

grep -q 'Keybinds.binds' "$welcome" \
    || note 'the welcome screen does not read the live keymap, so it could teach chords this machine does not have'
grep -q 'function chordFor' "$welcome" \
    || note 'there is no lookup from a bind description to its current chord'
# A fallback is correct -- the keymap may not have loaded yet -- but it must be
# a fallback rather than the source.
grep -q 'fallback' "$welcome" \
    || note 'no fallback chord, so the screen would be blank until the keymap loads'

# ── 2 & 3. Once, and dismissing counts ───────────────────────────────────────

grep -q 'key: "welcomeSeen"' "$schema" \
    || note 'there is no welcomeSeen preference, so the welcome cannot be shown once'
grep -A2 'key: "welcomeSeen"' "$schema" | grep -q 'internal: true' \
    || note 'welcomeSeen is not internal, so it would appear in settings search as something to toggle'
grep -q 'DesktopPreferences.set("welcomeSeen", true)' "$welcome" \
    || note 'dismissing does not mark the welcome as seen, so it would return every login'
grep -q 'Keys.onEscapePressed: root.dismiss()' "$welcome" \
    || note 'Escape does not go through dismiss(), so closing that way would show it again next login'

# ── 4. Still reachable ───────────────────────────────────────────────────────

grep -q 'target: "welcome"' "$shell_qml" \
    || note 'there is no welcome IPC target, so it cannot be reopened'
[[ -x "$command_file" ]] || note 'there is no launcher command to show the welcome again'

# ── 5. A stray click must not dismiss it ─────────────────────────────────────
#
# Every other overlay closes on an outside click. This one must not, and the
# check is that the scrim's MouseArea swallows clicks without acting.

python3 - "$welcome" <<'PY' || note 'the welcome scrim closes on an outside click, so a stray click would throw away the only explanation on offer'
import re, sys
text = open(sys.argv[1], encoding="utf-8").read()
# The scrim is the MouseArea filling the dimming Rectangle. Anything that
# reacts to a click there dismisses the surface.
scrim = re.search(r"Rectangle\s*\{[^{}]*anchors\.fill:\s*parent.*?MouseArea\s*\{(.*?)\}", text, re.S)
if scrim and re.search(r"onClicked|onPressed|onTapped", scrim.group(1)):
    raise SystemExit(1)
PY

# ── Wiring ───────────────────────────────────────────────────────────────────

grep -q 'import qs.modules.welcome' "$shell_qml" \
    || note 'shell.qml does not import the welcome module'
grep -qE '^\s*Welcome \{\}' "$shell_qml" \
    || note 'shell.qml never instantiates the welcome screen'
grep -q 'welcomeOpen: activeOverlay === "welcome"' "$state" \
    || note 'ShellState does not track the welcome screen'

# ── Live ─────────────────────────────────────────────────────────────────────

if ! command -v qs >/dev/null 2>&1 || ! qs ipc call welcome status >/dev/null 2>&1; then
    if (( ${#findings[@]} > 0 )); then
        printf 'welcome contract: %d finding(s)\n' "${#findings[@]}" >&2
        printf '  - %s\n' "${findings[@]}" >&2
        exit 1
    fi
    printf 'welcome contract: PASS (static; no running shell)\n'
    exit 0
fi

was_open="$(qs ipc call welcome status | jq -r .open)"

qs ipc call welcome open >/dev/null
sleep 1
[[ "$(qs ipc call welcome status | jq -r .open)" == "true" ]] \
    || note 'the welcome screen did not open'
hyprctl layers -j | grep -q 'qs-popover-welcome' \
    || note 'the welcome screen reports open but its layer never mapped'

qs ipc call welcome close >/dev/null
sleep 1
[[ "$(qs ipc call welcome status | jq -r .open)" == "false" ]] \
    || note 'the welcome screen did not close'

[[ "$was_open" == "true" ]] && qs ipc call welcome open >/dev/null

if (( ${#findings[@]} > 0 )); then
    printf 'welcome contract: %d finding(s)\n' "${#findings[@]}" >&2
    printf '  - %s\n' "${findings[@]}" >&2
    exit 1
fi

printf 'welcome contract: PASS\n'