#!/usr/bin/env bash

# The doctor is deliberately exercised through its command boundary.  The
# fixture commands include sensitive-looking output so this test proves the
# report only retains explicitly parsed, non-sensitive observations.

set -euo pipefail

repo_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
doctor="$repo_dir/config/dot/quickshell/scripts/panama-doctor"
theme_helper="$repo_dir/config/dot/quickshell/scripts/panama-theme-apps"
fixture_root="$repo_dir/tests/quickshell/fixtures/doctor"

fail() {
    printf 'panama doctor contract: %s\n' "$1" >&2
    exit 1
}

fixture="$(mktemp -d /tmp/panama-doctor.XXXXXX)"
child_pids=()
cleanup() {
    for pid in "${child_pids[@]}"; do
        kill "$pid" >/dev/null 2>&1 || true
        wait "$pid" >/dev/null 2>&1 || true
    done
    rm -rf "$fixture"
}
trap cleanup EXIT

home="$fixture/home"
config_home="$home/.config"
state_home="$home/.local/state"
runtime_dir="$fixture/runtime"
bin_dir="$fixture/bin"
data_home="$home/.local/share"

mkdir -p "$config_home" "$state_home" "$runtime_dir" "$bin_dir" "$data_home/vicinae/scripts"

# A mount table with the document portal present, which is the healthy state the
# rest of this file assumes. Written rather than read from /proc so the contract
# does not pass or fail on whether this machine happens to have flatpak working
# at the moment -- which is exactly the coupling that let a three-day outage go
# unnoticed. The gvfs line is there so the check has to match on the mount point
# and filesystem type rather than on being handed a file with one entry.
mountinfo="$fixture/mountinfo"
cat >"$mountinfo" <<EOF
749 54 0:87 / $runtime_dir rw,nosuid,nodev,relatime shared:933 - tmpfs tmpfs rw,size=3196364k,mode=700
1060 749 0:108 / $runtime_dir/gvfs rw,nosuid,nodev,relatime shared:1188 - fuse.gvfsd-fuse gvfsd-fuse rw,user_id=1000
29 749 0:86 / $runtime_dir/doc rw,nosuid,nodev,relatime shared:696 - fuse.portal portal rw,user_id=1000,group_id=1000
EOF
cp "$fixture_root/bin/"* "$bin_dir/"
chmod +x "$bin_dir"/*

# These are intentionally tiny stand-ins for authored executable probes. The
# named fixture scripts above cover probes whose output needs branch coverage.
for tool in hyprctl wl-paste grim tesseract kitty nextcloud rustdesk kdeconnect-cli; do
    cat >"$bin_dir/$tool" <<'EOF'
#!/usr/bin/bash
case "${0##*/}" in
    hyprctl) printf 'Hyprland 0.50.0\n' ;;
esac
EOF
    chmod +x "$bin_dir/$tool"
done

cat >"$bin_dir/flatpak" <<'EOF'
#!/usr/bin/bash
if [[ "${1:-}" == "info" && "${2:-}" == "app.bluebubbles.BlueBubbles" \
        && "${PANAMA_DOCTOR_FIXTURE_BLUEBUBBLES:-installed}" == "installed" ]]; then
    printf 'BlueBubbles fixture-secret-token\n'
    exit 0
fi
exit 1
EOF
chmod +x "$bin_dir/flatpak"

cat >"$bin_dir/calendar-agenda" <<'EOF'
#!/usr/bin/bash
if [[ "${1:-}" != "probe" ]]; then
    exit 2
fi
case "${PANAMA_DOCTOR_FIXTURE_CALENDAR:-ready}" in
    ready) printf '{"eds":true,"sourceRegistry":true,"enabledSources":2,"event":"fixture clipboard body"}\n' ;;
    malformed) printf 'calendar AA:BB:CC:DD:EE:FF\n' ;;
    timeout) /usr/bin/sleep 2; printf '{"enabledSources":2}\n' ;;
    *) printf '{"eds":true,"sourceRegistry":true,"enabledSources":0}\n' ;;
esac
EOF
chmod +x "$bin_dir/calendar-agenda"

cat >"$bin_dir/panama-brightness" <<'EOF'
#!/usr/bin/bash
case "${PANAMA_DOCTOR_FIXTURE_BRIGHTNESS:-ready}" in
    ready) printf '{"displays":[{"connector":"AA:BB:CC:DD:EE:FF"}],"error":""}\n' ;;
    denied) printf '{"displays":[],"error":"fixture-secret-token"}\n' ;;
    malformed) printf 'fixture clipboard body\n' ;;
esac
EOF
chmod +x "$bin_dir/panama-brightness"

mkdir -p "$config_home/autostart"
touch "$config_home/autostart/Nextcloud.desktop"
for name in hypr quickshell uwsm vicinae; do
    ln -s "$repo_dir/config/dot/$name" "$config_home/$name"
done
ln -s "$repo_dir/config/local/share/vicinae/scripts" "$data_home/vicinae/scripts/panama"
mkdir -p "$state_home/panama"
printf '%s\n' 'background { path = /fixture-secret-wallpaper.jpg }' \
    >"$state_home/panama/hyprlock.conf"
printf '%s\n' '{"generated":true,"path":"/fixture-secret-wallpaper.jpg","fallback":false,"error":""}' \
    >"$state_home/panama/hyprlock-status.json"

run_doctor() {
    HOME="$home" \
    PATH="$bin_dir" \
    XDG_CURRENT_DESKTOP=Hyprland \
    PANAMA_HOME_ASSISTANT_URL='https://fixture.invalid' \
    PANAMA_HOME_ASSISTANT_TOKEN='fixture-secret-token' \
    PANAMA_DOCTOR_ROOT="$repo_dir" \
    PANAMA_DOCTOR_HOME="$home" \
    PANAMA_DOCTOR_CONFIG_HOME="$config_home" \
    PANAMA_DOCTOR_STATE_HOME="$state_home" \
    PANAMA_DOCTOR_RUNTIME_DIR="$runtime_dir" \
    PANAMA_DOCTOR_MOUNTINFO="${PANAMA_DOCTOR_MOUNTINFO:-$mountinfo}" \
    PANAMA_DOCTOR_PATH="$bin_dir" \
    PANAMA_DOCTOR_SCRIPTS_DIR="$bin_dir" \
    PANAMA_DOCTOR_TIMEOUT="${PANAMA_DOCTOR_TIMEOUT:-0.2}" \
        /usr/bin/python3 "$doctor" "$@"
}

expected_order=$'desktop.hyprland\ndesktop.quickshell\ndesktop.notifications\ndesktop.portals\ndesktop.document-portal\ndesktop.portal-stability\ndesktop.hyprpaper\ndesktop.hypridle\ndesktop.hyprlock\ndesktop.vicinae\ninput.pipewire\ninput.clipboard\ninput.wallpaper\ninput.video-wallpaper\ninput.capture\ninput.ocr\ninput.brightness\nintegration.nextcloud\nintegration.rustdesk\nintegration.kdeconnect\nintegration.bluebubbles\nintegration.home-assistant\nintegration.calendar\npanama.updates\npanama.runtime-links\npanama.vicinae-commands\npanama.selected-terminal\npanama.selected-launcher\npanama.processes\npanama.caffeine'

assert_schema_and_redaction() {
    local snapshot="$1"
    jq -e '.schemaVersion == 1
      and (.generatedAt | type == "string")
      and (.summary.status | IN("healthy", "warning", "error"))
      and (.context.session | IN("hyprland", "other"))
      and (.context.versions | type == "array")
      and ([.checks[].id] | length == 30)
      and ([.checks[].id] | unique | length == 30)
      and ([.checks[].status] | all(IN("ok", "warning", "error", "unconfigured")))' \
        >/dev/null <<<"$snapshot" || fail "invalid schema: $snapshot"
    [[ "$(jq -r '.checks[].id' <<<"$snapshot")" == "$expected_order" ]] \
        || fail "checks are not in the authored order"
    ! grep -Fq 'fixture-secret-token' <<<"$snapshot" \
        || fail 'report exposed a fixture secret'
    ! grep -Fq 'fixture clipboard body' <<<"$snapshot" \
        || fail 'report exposed clipboard or calendar content'
    ! grep -Fq 'AA:BB:CC:DD:EE:FF' <<<"$snapshot" \
        || fail 'report exposed a device address'
}

check_status() {
    local snapshot="$1" id="$2" expected="$3"
    [[ "$(jq -r --arg id "$id" '.checks[] | select(.id == $id) | .status' <<<"$snapshot")" == "$expected" ]] \
        || fail "$id did not report $expected: $snapshot"
}

snapshot="$(run_doctor --json)"
assert_schema_and_redaction "$snapshot"
check_status "$snapshot" panama.vicinae-commands ok
check_status "$snapshot" desktop.hyprlock ok

printf '%s\n' '{"generated":false,"path":"/fixture-secret-wallpaper.jpg","fallback":true,"error":"fixture-secret-token"}' \
    >"$state_home/panama/hyprlock-status.json"
# A linked source checkout contains the template; installation renders the
# ignored machine-local fallback beside it. Model that installed state without
# writing an untracked file into the worktree under test.
rm "$config_home/hypr"
mkdir "$config_home/hypr"
cp "$repo_dir/config/dot/hypr/hyprlock.conf.template" \
    "$config_home/hypr/hyprlock.conf.template"
HOME="$home" XDG_CONFIG_HOME="$config_home" "$theme_helper" dark >/dev/null
fallback_lock="$(run_doctor --json)"
check_status "$fallback_lock" desktop.hyprlock warning
assert_schema_and_redaction "$fallback_lock"

rm -rf "$config_home/hypr"
missing_lock="$(run_doctor --json)"
check_status "$missing_lock" desktop.hyprlock error
assert_schema_and_redaction "$missing_lock"
ln -s "$repo_dir/config/dot/hypr" "$config_home/hypr"
printf '%s\n' '{"generated":true,"path":"/fixture-secret-wallpaper.jpg","fallback":false,"error":""}' \
    >"$state_home/panama/hyprlock-status.json"

# The diagnostic follows the actual installer contract: the scripts parent is
# a directory and only its Panama child is an authored link.
rm "$data_home/vicinae/scripts/panama"
unlinked_vicinae="$(run_doctor --json)"
check_status "$unlinked_vicinae" panama.vicinae-commands warning
PANAMA_PATH="$repo_dir" VICINAE_DATA_DIR="$data_home/vicinae" HOME="$home" \
    PATH="$bin_dir:/usr/bin" "$repo_dir/setup/scripts/link-vicinae-scripts"
relinked_vicinae="$(run_doctor --json)"
check_status "$relinked_vicinae" panama.vicinae-commands ok
[[ -L "$data_home/vicinae/scripts/panama" \
    && "$(readlink "$data_home/vicinae/scripts/panama")" == "$repo_dir/config/local/share/vicinae/scripts" ]] \
    || fail 'authored Vicinae helper did not create the diagnosed child link'

# A healthy systemd-backed service stays healthy.
check_status "$snapshot" desktop.hyprpaper ok

# Arbitrary parent environment values are not propagated into probes.
sealed_environment="$(PANAMA_DOCTOR_FIXTURE_PROBE_SECRET=fixture-secret-token run_doctor --json)"
assert_schema_and_redaction "$sealed_environment"
check_status "$sealed_environment" desktop.hyprpaper ok

# An OS-level launch failure is contained as a check result, never a failed
# doctor invocation or a partial snapshot.
chmod 0644 "$bin_dir/systemctl"
if ! launch_failure="$(run_doctor --json)"; then
    chmod +x "$bin_dir/systemctl"
    fail 'launch failure prevented the doctor from emitting JSON'
fi
chmod +x "$bin_dir/systemctl"
assert_schema_and_redaction "$launch_failure"
check_status "$launch_failure" desktop.hyprpaper error

# A missing required executable is an error rather than a crash.
mv "$bin_dir/qs" "$bin_dir/qs.off"
missing_qs="$(run_doctor --json)"
check_status "$missing_qs" desktop.quickshell error
mv "$bin_dir/qs.off" "$bin_dir/qs"

# Optional integrations stay neutral until the user configures them.
rm "$config_home/autostart/Nextcloud.desktop"
unconfigured_nextcloud="$(run_doctor --json)"
check_status "$unconfigured_nextcloud" integration.nextcloud unconfigured
touch "$config_home/autostart/Nextcloud.desktop"

# A configured integration whose process isn't running is actionable with an
# authored label, never an application name or command derived from probe
# output. Nextcloud has no systemd unit behind it, so this is a process
# check (PANAMA_DOCTOR_FIXTURE_PROCESSES), not a service check.
stopped_nextcloud="$(PANAMA_DOCTOR_FIXTURE_PROCESSES=nextcloud:missing run_doctor --json)"
check_status "$stopped_nextcloud" integration.nextcloud warning
jq -e '.checks[] | select(.id == "integration.nextcloud")
  | .action == {kind:"open", label:"Open Nextcloud", confirm:false}' \
    >/dev/null <<<"$stopped_nextcloud" || fail 'Nextcloud action was not authored'

# The document portal is judged by the mount, never by the service.
#
# This is the check's whole reason for existing. The service can be active and
# the mount gone -- that is precisely what happened, twice -- so a fixture that
# keeps every service healthy and removes only the mount has to fail. If this
# ever passes, the check has drifted back to asking systemd how it feels.
grep -v ' fuse.portal ' "$mountinfo" >"$fixture/mountinfo-unmounted"
unmounted_portal="$(PANAMA_DOCTOR_MOUNTINFO="$fixture/mountinfo-unmounted" run_doctor --json)"
check_status "$unmounted_portal" desktop.document-portal warning
jq -e '.checks[] | select(.id == "desktop.document-portal")
  | .action == {kind:"repair", label:"Restart the document portal", confirm:false}' \
    >/dev/null <<<"$unmounted_portal" || fail 'document portal repair action was not authored'

# A mount at the right path of the wrong type is not the document portal. The
# stale mountpoint left behind by a failed activation is a plain directory, but
# matching on path alone would call any future mount there healthy.
sed 's/ fuse.portal portal / fuse.gvfsd-fuse gvfsd-fuse /' "$mountinfo" >"$fixture/mountinfo-wrongtype"
wrong_type_portal="$(PANAMA_DOCTOR_MOUNTINFO="$fixture/mountinfo-wrongtype" run_doctor --json)"
check_status "$wrong_type_portal" desktop.document-portal warning

# An unreadable mount table is an error, not a silent pass and not a crash.
missing_mountinfo="$(PANAMA_DOCTOR_MOUNTINFO="$fixture/no-such-mountinfo" run_doctor --json)"
check_status "$missing_mountinfo" desktop.document-portal error

# DDC errors are classified without retaining connectors or bus addresses.
denied_brightness="$(PANAMA_DOCTOR_FIXTURE_BRIGHTNESS=denied run_doctor --json)"
check_status "$denied_brightness" input.brightness warning
jq -e '.checks[] | select(.id == "input.brightness")
  | .action == {kind:"instructions", label:"View setup instructions", confirm:false, target:"ddc-permissions"}' \
    >/dev/null <<<"$denied_brightness" || fail 'DDC instructions were not authored'

# A bounded probe timeout becomes a result, never a helper failure.
timed_calendar="$(PANAMA_DOCTOR_FIXTURE_CALENDAR=timeout PANAMA_DOCTOR_TIMEOUT=0.05 run_doctor --json)"
check_status "$timed_calendar" integration.calendar warning
jq -e '.checks[] | select(.id == "integration.calendar")
  | .action == {kind:"open", label:"Open Date & Time", confirm:false, target:"datetime"}' \
    >/dev/null <<<"$timed_calendar" || fail 'calendar action was not authored'

# Exact Panama/Caffeine inhibitor rows detect duplicates without exposing PIDs.
duplicated_caffeine="$(PANAMA_DOCTOR_FIXTURE_CAFFEINE=duplicate run_doctor --json)"
check_status "$duplicated_caffeine" panama.caffeine warning
jq -e '.checks[] | select(.id == "panama.caffeine")
  | .action == {kind:"repair", label:"Release duplicate inhibitors", confirm:false}' \
    >/dev/null <<<"$duplicated_caffeine" || fail 'Caffeine repair action was not authored'
! jq -r '.checks[] | select(.id == "panama.caffeine") | .detail' <<<"$duplicated_caffeine" | grep -Eq '[0-9]{3,}' \
    || fail 'Caffeine detail exposed inhibitor PIDs'

# Process counts use only exact authored names and never expose command lines or PIDs.
duplicated_processes="$(PANAMA_DOCTOR_FIXTURE_PROCESSES=qs:duplicate run_doctor --json)"
check_status "$duplicated_processes" panama.processes warning
! jq -r '.checks[] | select(.id == "panama.processes") | .detail' <<<"$duplicated_processes" | grep -Eq '[0-9]{3,}' \
    || fail 'process detail exposed a PID'

missing_quickshell_process="$(PANAMA_DOCTOR_FIXTURE_PROCESSES=qs:missing run_doctor --json)"
check_status "$missing_quickshell_process" panama.processes error

# Invalid output for a non-Quickshell authored process is not a normal zero
# count that can be hidden by the running Quickshell process.
malformed_processes="$(PANAMA_DOCTOR_FIXTURE_PROCESSES=hyprpaper:malformed run_doctor --json)"
check_status "$malformed_processes" panama.processes warning

# Panama/Caffeine-shaped rows that do not satisfy the fixed inhibitor schema
# are unavailable rather than reported as a healthy no-inhibitor state.
malformed_caffeine="$(PANAMA_DOCTOR_FIXTURE_CAFFEINE=malformed run_doctor --json)"
check_status "$malformed_caffeine" panama.caffeine warning

# A decoding error raised inside a concurrent probe is converted to a complete
# snapshot rather than escaping from Future.result().
if ! invalid_probe="$(PANAMA_DOCTOR_FIXTURE_BUS=invalid-utf8 run_doctor --json)"; then
    fail 'unexpected probe exception prevented the doctor from emitting JSON'
fi
assert_schema_and_redaction "$invalid_probe"
check_status "$invalid_probe" desktop.portals warning

# Configured Home Assistant failures route to the exact authored Settings page.
rm "$config_home/quickshell"
mkdir -p "$config_home/quickshell/scripts"
home_assistant_failure="$(run_doctor --json)"
check_status "$home_assistant_failure" integration.home-assistant warning
jq -e '.checks[] | select(.id == "integration.home-assistant")
  | .action == {kind:"open", label:"Open Home settings", confirm:false, target:"my-home"}' \
    >/dev/null <<<"$home_assistant_failure" || fail 'Home Assistant action was not routed to my-home'

# Invalid probe text is contained in its own check and never copied to JSON.
malformed_calendar="$(PANAMA_DOCTOR_FIXTURE_CALENDAR=malformed run_doctor --json)"
check_status "$malformed_calendar" integration.calendar warning
assert_schema_and_redaction "$malformed_calendar"

summary="$(run_doctor --summary)"
[[ "$summary" =~ ^Panama\ system\ health:\ (healthy|warning|error)\ \([0-9]+\ ok,\ [0-9]+\ warnings,\ [0-9]+\ errors,\ [0-9]+\ unconfigured\)$ ]] \
    || fail "summary is not concise: $summary"

# Repairs run against a second, disposable Panama root. Every process boundary
# records its argv, and every filesystem assertion is confined to this fixture.
repair_root="$home/.local/share/Panama"
repair_log="$runtime_dir/repair.log"
mkdir -p "$repair_root/config/dot" "$repair_root/config/local/share/vicinae/scripts" \
    "$repair_root/setup/scripts"
for name in hypr quickshell uwsm vicinae; do
    mkdir -p "$repair_root/config/dot/$name"
done
cp "$repo_dir/setup/scripts/link-vicinae-scripts" "$repair_root/setup/scripts/link-vicinae-scripts"

mv "$bin_dir/systemctl" "$bin_dir/systemctl-probe"
cat >"$bin_dir/systemctl" <<'EOF'
#!/usr/bin/bash
set -euo pipefail
if [[ "${1:-}" == "--user" && "${2:-}" == "restart" ]]; then
    printf 'systemctl' >>"$XDG_RUNTIME_DIR/repair.log"
    printf '|%s' "$@" >>"$XDG_RUNTIME_DIR/repair.log"
    printf '\n' >>"$XDG_RUNTIME_DIR/repair.log"
    [[ ! -e "$XDG_RUNTIME_DIR/fail-repair" ]] || exit 5
    exit 0
fi
exec "${0%/*}/systemctl-probe" "$@"
EOF

cat >"$bin_dir/panama-action" <<'EOF'
#!/usr/bin/bash
set -euo pipefail
printf 'panama-action' >>"$XDG_RUNTIME_DIR/repair.log"
printf '|%s' "$@" >>"$XDG_RUNTIME_DIR/repair.log"
printf '\n' >>"$XDG_RUNTIME_DIR/repair.log"
EOF

cat >"$bin_dir/systemd-inhibit" <<'EOF'
#!/usr/bin/bash
set -euo pipefail
printf 'systemd-inhibit' >>"$XDG_RUNTIME_DIR/repair.log"
printf '|%s' "$@" >>"$XDG_RUNTIME_DIR/repair.log"
printf '\n' >>"$XDG_RUNTIME_DIR/repair.log"
count_file="$XDG_RUNTIME_DIR/caffeine-list-count"
count=0
[[ ! -f "$count_file" ]] || read -r count <"$count_file"
count=$((count + 1))
printf '%s\n' "$count" >"$count_file"
read -r preserved duplicate <"$XDG_RUNTIME_DIR/caffeine-pids"
uid="$(/usr/bin/id -u)"
mode="$(<"$XDG_RUNTIME_DIR/caffeine-mode")"
if [[ "$mode" == disappear && "$count" -ge 2 ]]; then
    /usr/bin/touch "$XDG_RUNTIME_DIR/release-disappearing-pid"
    for _ in $(/usr/bin/seq 1 100); do
        [[ ! -e "/proc/$duplicate" ]] && break
        /usr/bin/sleep 0.01
    done
fi
preserved_comm=systemd-inhibit
if [[ "$mode" == preserve-altered && "$count" -ge 2 ]]; then
    preserved_comm=changed-command
fi
printf 'Panama %s fixture-user %s %s sleep:idle Caffeine block\n' "$uid" "$preserved" "$preserved_comm"
if [[ "$mode" != multiplicity || "$count" -lt 2 ]]; then
    printf 'Panama %s fixture-user %s systemd-inhibit sleep:idle Caffeine block\n' "$uid" "$preserved"
fi
if [[ "$mode" == altered && "$count" -ge 2 ]]; then
    printf 'Panama %s fixture-user %s systemd-inhibit sleep:idle Other block\n' "$uid" "$duplicate"
else
    printf 'Panama %s fixture-user %s systemd-inhibit sleep:idle Caffeine block\n' "$uid" "$duplicate"
fi
printf 'Other %s fixture-user 4999 systemd-inhibit sleep:idle Caffeine block\n' "$uid"
printf 'Panama 99999 fixture-user 4998 systemd-inhibit sleep:idle Caffeine block\n'
printf 'Panama %s fixture-user 4997 systemd-inhibit sleep:idle Other block\n' "$uid"
printf 'Panama %s fixture-user 4996 systemd-inhibit sleep:idle Caffeine delay\n' "$uid"
EOF

chmod +x "$bin_dir/systemctl" "$bin_dir/panama-action" \
    "$bin_dir/systemd-inhibit" "$repair_root/setup/scripts/link-vicinae-scripts"

run_repair() {
    HOME="$home" \
    PATH="$bin_dir:/usr/bin" \
    XDG_CURRENT_DESKTOP=Hyprland \
    PANAMA_DOCTOR_ROOT="$repair_root" \
    PANAMA_DOCTOR_HOME="$home" \
    PANAMA_DOCTOR_CONFIG_HOME="$config_home" \
    PANAMA_DOCTOR_STATE_HOME="$state_home" \
    PANAMA_DOCTOR_RUNTIME_DIR="$runtime_dir" \
    PANAMA_DOCTOR_PATH="$bin_dir:/usr/bin" \
    PANAMA_DOCTOR_SCRIPTS_DIR="$bin_dir" \
    PANAMA_DOCTOR_TIMEOUT=0.2 \
        /usr/bin/python3 "$doctor" "$@"
}

repair_output=""
repair_status=0
invoke_repair() {
    set +e
    repair_output="$(run_repair --repair "$1" --json)"
    repair_status=$?
    set -e
}

assert_repair_result() {
    local id="$1" accepted="$2" exit_code="$3"
    jq -e --arg id "$id" --argjson accepted "$accepted" --argjson exitCode "$exit_code" '
      (keys | sort) == ["accepted", "checkId", "exitCode", "message", "schemaVersion"]
      and .schemaVersion == 1
      and .checkId == $id
      and .accepted == $accepted
      and .exitCode == $exitCode
      and (.message | type == "string" and length > 0)
    ' >/dev/null <<<"$repair_output" || fail "invalid repair result for $id: $repair_output"
}

for repair_case in \
    'desktop.hyprpaper|systemctl|--user|restart|hyprpaper.service' \
    'desktop.hypridle|systemctl|--user|restart|hypridle.service' \
    'desktop.vicinae|systemctl|--user|restart|vicinae.service' \
    'desktop.quickshell|panama-action|restart-shell'; do
    IFS='|' read -r repair_id executable arg1 arg2 arg3 <<<"$repair_case"
    : >"$repair_log"
    invoke_repair "$repair_id"
    [[ "$repair_status" == 0 ]] || fail "$repair_id returned $repair_status"
    assert_repair_result "$repair_id" true 0
    expected="$executable|$arg1"
    [[ -z "$arg2" ]] || expected+="|$arg2"
    [[ -z "$arg3" ]] || expected+="|$arg3"
    [[ "$(<"$repair_log")" == "$expected" ]] \
        || fail "$repair_id argv was not exact: $(<"$repair_log")"
done

# Known process failures still return complete JSON and preserve the command's
# exit status for the QML state machine.
touch "$runtime_dir/fail-repair"
: >"$repair_log"
invoke_repair desktop.vicinae
rm "$runtime_dir/fail-repair"
[[ "$repair_status" == 5 ]] || fail "failed repair returned $repair_status instead of 5"
assert_repair_result desktop.vicinae true 5
[[ "$(<"$repair_log")" == 'systemctl|--user|restart|vicinae.service' ]] \
    || fail 'failed repair changed the authored argv'

# The real authored Vicinae helper converges the exact child link diagnosed by
# panama-doctor under the isolated HOME.
rm -f "$data_home/vicinae/scripts/panama"
before_vicinae_repair="$(run_repair --json)"
check_status "$before_vicinae_repair" panama.vicinae-commands warning
invoke_repair panama.vicinae-commands
[[ "$repair_status" == 0 ]] || fail "Vicinae command repair returned $repair_status"
assert_repair_result panama.vicinae-commands true 0
after_vicinae_repair="$(run_repair --json)"
check_status "$after_vicinae_repair" panama.vicinae-commands ok
[[ -L "$data_home/vicinae/scripts/panama" \
    && "$(readlink "$data_home/vicinae/scripts/panama")" == "$repair_root/config/local/share/vicinae/scripts" ]] \
    || fail 'Vicinae repair did not install the diagnosed child link'

# Runtime-link repair may replace only absent links or symlinks whose lexical
# target proves Panama ownership. Every other object remains untouched.
for name in hypr quickshell uwsm vicinae; do
    path="$config_home/$name"
    if [[ -e "$path" || -L "$path" ]]; then
        mv "$path" "$fixture/pre-repair-$name"
    fi
done
ln -s "$repair_root/config/dot/hypr" "$config_home/hypr"
correct_inode="$(stat -c %i "$config_home/hypr")"
ln -s "$repair_root/config/dot/quickshell" "$config_home/uwsm"
ln -s "$fixture/external-broken-link" "$config_home/vicinae"
ln -s "$fixture/untouched" "$config_home/not-panama"
: >"$repair_log"
invoke_repair panama.runtime-links
[[ "$repair_status" == 1 ]] || fail "blocked runtime-link repair returned $repair_status"
assert_repair_result panama.runtime-links true 1
[[ -L "$config_home/hypr" && "$(readlink "$config_home/hypr")" == "$repair_root/config/dot/hypr" ]] \
    || fail 'correct runtime link changed'
[[ "$(stat -c %i "$config_home/hypr")" == "$correct_inode" ]] \
    || fail 'correct runtime link was replaced instead of left untouched'
[[ -L "$config_home/quickshell" && "$(readlink "$config_home/quickshell")" == "$repair_root/config/dot/quickshell" ]] \
    || fail 'absent quickshell link was not created'
[[ -L "$config_home/uwsm" && "$(readlink "$config_home/uwsm")" == "$repair_root/config/dot/uwsm" ]] \
    || fail 'provably Panama-owned stale link was not repaired'
[[ -L "$config_home/vicinae" && "$(readlink "$config_home/vicinae")" == "$fixture/external-broken-link" ]] \
    || fail 'external broken symlink was replaced'
[[ -L "$config_home/not-panama" && "$(readlink "$config_home/not-panama")" == "$fixture/untouched" ]] \
    || fail 'runtime-link repair touched an unauthored link name'
[[ ! -s "$repair_log" ]] || fail 'runtime-link repair launched a process'

# Regular files and directories also remain untouched.
rm "$config_home/vicinae"
rm "$config_home/uwsm"
printf 'user-owned file\n' >"$config_home/uwsm"
mkdir "$config_home/vicinae"
invoke_repair panama.runtime-links
[[ "$repair_status" == 1 ]] || fail 'file/directory blockers did not make repair incomplete'
[[ -f "$config_home/uwsm" && "$(<"$config_home/uwsm")" == 'user-owned file' ]] \
    || fail 'runtime-link repair replaced a regular file'
[[ -d "$config_home/vicinae" && ! -L "$config_home/vicinae" ]] \
    || fail 'runtime-link repair replaced a user-owned directory'

# An injected exchange failure occurs after the authored candidate symlink is
# made; the original link must still be intact.
/usr/bin/python3 - "$doctor" "$repair_root" "$fixture/atomic-config" <<'PY' \
    || fail 'atomic replacement failure did not preserve the original link'
import importlib.util
import importlib.machinery
import os
import sys
from pathlib import Path

doctor_path, root_text, config_text = sys.argv[1:]
loader = importlib.machinery.SourceFileLoader("panama_doctor_contract", doctor_path)
spec = importlib.util.spec_from_loader(loader.name, loader)
module = importlib.util.module_from_spec(spec)
sys.modules[spec.name] = module
loader.exec_module(module)
root = Path(root_text)
config_home = Path(config_text)
config_home.mkdir(parents=True)
destination = config_home / "hypr"
original = root / "config/dot/quickshell"
destination.symlink_to(original, target_is_directory=True)
config = module.DoctorConfig(root, config_home.parent, config_home, config_home.parent / "state", config_home.parent / "runtime", "", 0.2)
real_exchange = module.rename_exchange
module.rename_exchange = lambda source, target: (_ for _ in ()).throw(OSError("fixture exchange failure"))
try:
    result = module.repair_runtime_links(config)
finally:
    module.rename_exchange = real_exchange
assert result.exit_code == 1
assert destination.is_symlink()
assert os.readlink(destination) == str(original)
assert not list(config_home.glob(".panama-link-*"))
PY

# A deterministic swap at the ownership/replacement boundary must be detected
# from the exchanged-out object and rolled back, preserving the external link.
/usr/bin/python3 - "$doctor" "$repair_root" "$fixture/toctou-config" "$fixture/external-race-target" <<'PY' \
    || fail 'runtime-link exchange did not restore a boundary-swapped external link'
import importlib.machinery
import importlib.util
import os
import sys
from pathlib import Path

doctor_path, root_text, config_text, external_text = sys.argv[1:]
loader = importlib.machinery.SourceFileLoader("panama_doctor_toctou", doctor_path)
spec = importlib.util.spec_from_loader(loader.name, loader)
module = importlib.util.module_from_spec(spec)
sys.modules[spec.name] = module
loader.exec_module(module)
root = Path(root_text)
config_home = Path(config_text)
config_home.mkdir(parents=True)
for name, relative in module.RUNTIME_LINK_TARGETS:
    (config_home / name).symlink_to(root / relative, target_is_directory=True)
destination = config_home / "uwsm"
destination.unlink()
destination.symlink_to(root / "config/dot/quickshell", target_is_directory=True)
external = Path(external_text)
real_exchange = module.rename_exchange
first = True

def race_exchange(candidate, target):
    global first
    if first:
        first = False
        target.unlink()
        target.symlink_to(external, target_is_directory=True)
    real_exchange(candidate, target)

module.rename_exchange = race_exchange
config = module.DoctorConfig(root, config_home.parent, config_home, config_home.parent / "state", config_home.parent / "runtime", "", 0.2)
try:
    result = module.repair_runtime_links(config)
finally:
    module.rename_exchange = real_exchange
assert result.exit_code == 1
assert destination.is_symlink()
assert os.readlink(destination) == str(external)
assert not list(config_home.glob(".panama-link-*"))
PY

# Caffeine repair deduplicates rows, pins each distinct duplicate with a
# pidfd, revalidates authored metadata, and signals only the duplicate.
/usr/bin/sleep 30 &
preserved_pid=$!
child_pids+=("$preserved_pid")
/usr/bin/sleep 30 &
duplicate_pid=$!
child_pids+=("$duplicate_pid")
printf '%s %s\n' "$preserved_pid" "$duplicate_pid" >"$runtime_dir/caffeine-pids"
printf 'dedupe\n' >"$runtime_dir/caffeine-mode"
rm -f "$runtime_dir/caffeine-list-count"
: >"$repair_log"
invoke_repair panama.caffeine
[[ "$repair_status" == 0 ]] || fail "Caffeine repair returned $repair_status"
assert_repair_result panama.caffeine true 0
expected_caffeine=$'systemd-inhibit|--list|--no-pager|--no-legend\nsystemd-inhibit|--list|--no-pager|--no-legend'
[[ "$(<"$repair_log")" == "$expected_caffeine" ]] \
    || fail "Caffeine repair did not preserve/filter exact inhibitors: $(<"$repair_log")"
kill -0 "$preserved_pid" >/dev/null 2>&1 || fail 'repeated inhibitor rows killed the preserved process'
for _ in $(seq 1 40); do
    kill -0 "$duplicate_pid" >/dev/null 2>&1 || break
    sleep 0.05
done
! kill -0 "$duplicate_pid" >/dev/null 2>&1 || fail 'distinct duplicate inhibitor was not terminated'

# Changed second-list metadata invalidates the candidate before any signal.
/usr/bin/sleep 30 &
altered_preserved=$!
child_pids+=("$altered_preserved")
/usr/bin/sleep 30 &
altered_duplicate=$!
child_pids+=("$altered_duplicate")
printf '%s %s\n' "$altered_preserved" "$altered_duplicate" >"$runtime_dir/caffeine-pids"
printf 'altered\n' >"$runtime_dir/caffeine-mode"
rm -f "$runtime_dir/caffeine-list-count"
invoke_repair panama.caffeine
[[ "$repair_status" == 1 ]] || fail 'altered inhibitor metadata was not safely refused'
assert_repair_result panama.caffeine true 1
kill -0 "$altered_preserved" >/dev/null 2>&1 || fail 'metadata refusal signaled the preserved process'
kill -0 "$altered_duplicate" >/dev/null 2>&1 || fail 'metadata refusal signaled the candidate process'

# Changing metadata on the preserved row is also a full-identity mismatch,
# even though every duplicate PID remains present.
/usr/bin/sleep 30 &
preserve_changed_keep=$!
child_pids+=("$preserve_changed_keep")
/usr/bin/sleep 30 &
preserve_changed_duplicate=$!
child_pids+=("$preserve_changed_duplicate")
printf '%s %s\n' "$preserve_changed_keep" "$preserve_changed_duplicate" >"$runtime_dir/caffeine-pids"
printf 'preserve-altered\n' >"$runtime_dir/caffeine-mode"
rm -f "$runtime_dir/caffeine-list-count"
invoke_repair panama.caffeine
[[ "$repair_status" == 1 ]] || fail 'preserved-row metadata change was not safely refused'
assert_repair_result panama.caffeine true 1
kill -0 "$preserve_changed_keep" >/dev/null 2>&1 || fail 'preserved-row mismatch signaled the preserved process'
kill -0 "$preserve_changed_duplicate" >/dev/null 2>&1 || fail 'preserved-row mismatch signaled the duplicate process'

# A repeated exact row disappearing between lists changes multiplicity and is
# refused before signaling any pinned duplicate.
/usr/bin/sleep 30 &
multiplicity_keep=$!
child_pids+=("$multiplicity_keep")
/usr/bin/sleep 30 &
multiplicity_duplicate=$!
child_pids+=("$multiplicity_duplicate")
printf '%s %s\n' "$multiplicity_keep" "$multiplicity_duplicate" >"$runtime_dir/caffeine-pids"
printf 'multiplicity\n' >"$runtime_dir/caffeine-mode"
rm -f "$runtime_dir/caffeine-list-count"
invoke_repair panama.caffeine
[[ "$repair_status" == 1 ]] || fail 'inhibitor row multiplicity change was not safely refused'
assert_repair_result panama.caffeine true 1
kill -0 "$multiplicity_keep" >/dev/null 2>&1 || fail 'multiplicity mismatch signaled the preserved process'
kill -0 "$multiplicity_duplicate" >/dev/null 2>&1 || fail 'multiplicity mismatch signaled the duplicate process'

# The production pidfd release function preflights every candidate before any
# SIGTERM. A refused second preflight leaves both disposable children alive.
/usr/bin/sleep 30 &
preflight_first=$!
child_pids+=("$preflight_first")
/usr/bin/sleep 30 &
preflight_second=$!
child_pids+=("$preflight_second")
/usr/bin/python3 - "$doctor" "$preflight_first" "$preflight_second" <<'PY' \
    || fail 'pidfd preflight failure signaled a disposable duplicate'
import errno
import importlib.machinery
import importlib.util
import os
import signal
import sys

doctor_path = sys.argv[1]
pids = [int(value) for value in sys.argv[2:]]
loader = importlib.machinery.SourceFileLoader("panama_doctor_preflight", doctor_path)
spec = importlib.util.spec_from_loader(loader.name, loader)
module = importlib.util.module_from_spec(spec)
sys.modules[spec.name] = module
loader.exec_module(module)
pidfds = [os.pidfd_open(pid, 0) for pid in pids]
calls = []

def sender(pidfd, sig, siginfo, flags):
    calls.append(sig)
    if sig == 0 and pidfd == pidfds[1]:
        raise PermissionError(errno.EPERM, "fixture preflight refusal")
    signal.pidfd_send_signal(pidfd, sig, siginfo, flags)

try:
    outcome = module.signal_caffeine_pidfds(pidfds, sender)
finally:
    for pidfd in pidfds:
        os.close(pidfd)
assert outcome == "preflight-failed"
assert calls == [0, 0]
for pid in pids:
    os.kill(pid, 0)
PY
kill -0 "$preflight_first" >/dev/null 2>&1 || fail 'preflight refusal killed the first duplicate'
kill -0 "$preflight_second" >/dev/null 2>&1 || fail 'preflight refusal killed the second duplicate'

# A candidate that disappears after pidfd acquisition and second-list request
# is a safe failure; an unrelated disposable process must remain untouched.
/usr/bin/sleep 30 &
unrelated_pid=$!
child_pids+=("$unrelated_pid")
(
    /usr/bin/sleep 30 &
    disappearing_pid=$!
    trap 'kill "$disappearing_pid" >/dev/null 2>&1 || true; wait "$disappearing_pid" >/dev/null 2>&1 || true' EXIT
    printf '%s\n' "$disappearing_pid" >"$runtime_dir/disappearing-pid"
    while [[ ! -e "$runtime_dir/release-disappearing-pid" ]]; do
        /usr/bin/sleep 0.01
    done
    kill "$disappearing_pid"
    wait "$disappearing_pid" >/dev/null 2>&1 || true
    trap - EXIT
) &
disappearance_controller=$!
child_pids+=("$disappearance_controller")
for _ in $(seq 1 100); do
    [[ -s "$runtime_dir/disappearing-pid" ]] && break
    sleep 0.01
done
[[ -s "$runtime_dir/disappearing-pid" ]] || fail 'disappearing PID fixture did not start'
disappearing_pid="$(<"$runtime_dir/disappearing-pid")"
printf '%s %s\n' "$altered_preserved" "$disappearing_pid" >"$runtime_dir/caffeine-pids"
printf 'disappear\n' >"$runtime_dir/caffeine-mode"
rm -f "$runtime_dir/caffeine-list-count"
invoke_repair panama.caffeine
[[ "$repair_status" == 1 ]] || fail 'disappeared inhibitor PID was not safely refused'
assert_repair_result panama.caffeine true 1
wait "$disappearance_controller"
kill -0 "$unrelated_pid" >/dev/null 2>&1 || fail 'PID disappearance signaled an unrelated process'

# Rejected IDs are complete JSON, exit 2, and cause neither a process launch
# nor a filesystem mutation.
fixture_state() {
    /usr/bin/python3 - "$fixture" <<'PY'
import hashlib
import os
import stat
import sys
from pathlib import Path

root = Path(sys.argv[1])
digest = hashlib.sha256()
for path in sorted(root.rglob("*"), key=lambda item: os.fsencode(str(item.relative_to(root)))):
    relative = os.fsencode(str(path.relative_to(root)))
    metadata = path.lstat()
    digest.update(relative + b"\0" + oct(stat.S_IMODE(metadata.st_mode)).encode() + b"\0")
    if path.is_symlink():
        digest.update(b"link\0" + os.fsencode(os.readlink(path)) + b"\0")
    elif path.is_file():
        digest.update(b"file\0" + hashlib.sha256(path.read_bytes()).digest())
    elif path.is_dir():
        digest.update(b"dir\0")
    else:
        digest.update(b"other\0")
print(digest.hexdigest())
PY
}
for rejected_id in unknown.check integration.home-assistant input.brightness \
    desktop.notifications ../../escape 'desktop.vicinae;touch injected'; do
    : >"$repair_log"
    before_state="$(fixture_state)"
    invoke_repair "$rejected_id"
    [[ "$repair_status" == 2 ]] || fail "$rejected_id returned $repair_status instead of 2"
    assert_repair_result "$rejected_id" false 2
    [[ ! -s "$repair_log" ]] || fail "$rejected_id launched a process"
    [[ "$(fixture_state)" == "$before_state" ]] || fail "$rejected_id mutated the filesystem"
done

printf 'panama doctor contract: PASS\n'
