#!/usr/bin/env bash

# Two behaviours the settings rows depend on:
#
#   commitPreference(key, value)
#     One entry point for every row. A compositor-backed key must reach Hyprland
#     and be confirmed before it is stored; a local key is written directly.
#     Rows bind a schema key and call this, so they never need to know which
#     kind they hold -- and a row must not be able to store a value the
#     compositor rejected.
#
#   restoreDefaults()
#     Panama keeps user state in more than one file. Resetting only the schema
#     store would leave a customised Home accessory arrangement in place while
#     claiming to have restored Panama's defaults. That is worse than having no
#     reset at all, because it is silent.

set -euo pipefail

repo_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
harness="$repo_dir/config/dot/quickshell/settings-system-harness.qml"
system_settings="$repo_dir/config/dot/quickshell/services/SystemSettings.qml"

# Preferences are committed to $XDG_CONFIG_HOME, and the Home store lives under
# $XDG_STATE_HOME. Both are isolated so this contract cannot touch the real
# desktop's settings; the compositor is the live one and is restored below.
config_home="$(mktemp -d /tmp/panama-commit-config.XXXXXX)"
state_home="$(mktemp -d /tmp/panama-commit-state.XXXXXX)"

fail() {
    printf 'settings commit/reset contract: %s\n' "$1" >&2
    exit 1
}

rg -Fq 'HomePreferences.resetHomeDefaults();' "$system_settings" \
    || fail 'restoreDefaults does not use the durable Home reset boundary'
if rg -q 'HomePreferences\.(favorites|initialized)\s*=' "$system_settings"; then
    fail 'restoreDefaults mutates Home aliases instead of using resetHomeDefaults'
fi

qs_for_harness() {
    XDG_CONFIG_HOME="$config_home" XDG_STATE_HOME="$state_home" qs -p "$harness" "$@"
}

original_rounding="$(hyprctl -j getoption decoration:rounding | jq -r .int)"
original_gaps="$(hyprctl -j getoption general:gaps_out | jq -r .css | awk '{print $1}')"

restore() {
    hyprctl eval "hl.config({ decoration = { rounding = $original_rounding }, general = { gaps_out = $original_gaps } })" >/dev/null 2>&1 || true
    qs_for_harness kill >/dev/null 2>&1 || true
    rm -rf "$config_home" "$state_home"
}
trap restore EXIT

XDG_CONFIG_HOME="$config_home" XDG_STATE_HOME="$state_home" qs -p "$harness" --daemonize >/dev/null
for _ in $(seq 1 40); do
    qs_for_harness ipc show 2>/dev/null | rg -q '^target settings-system-test$' && break
    sleep 0.1
done
qs_for_harness ipc show 2>/dev/null | rg -q '^target settings-system-test$' || fail 'test IPC target did not start'

# ── A local key is stored directly ───────────────────────────────────────────
[[ "$(qs_for_harness ipc call settings-system-test commit showSeconds false)" == "true" ]] \
    || fail 'commitPreference refused a local key'
[[ "$(qs_for_harness ipc call settings-system-test stored showSeconds)" == "false" ]] \
    || fail 'a local key was not stored'

# ── A compositor key reaches Hyprland, then is stored ────────────────────────
target_rounding=$(( original_rounding == 11 ? 13 : 11 ))
[[ "$(qs_for_harness ipc call settings-system-test commit windowRounding "$target_rounding")" == "true" ]] \
    || fail 'commitPreference refused a compositor key'

for _ in $(seq 1 40); do
    [[ "$(hyprctl -j getoption decoration:rounding | jq -r .int)" == "$target_rounding" ]] && break
    sleep 0.1
done
[[ "$(hyprctl -j getoption decoration:rounding | jq -r .int)" == "$target_rounding" ]] \
    || fail "a compositor-backed commit did not reach Hyprland (rounding=$(hyprctl -j getoption decoration:rounding | jq -r .int))"
[[ "$(qs_for_harness ipc call settings-system-test stored windowRounding)" == "$target_rounding" ]] \
    || fail 'a verified compositor commit was not stored'

# ── A value the schema rejects is never stored ───────────────────────────────
before="$(qs_for_harness ipc call settings-system-test stored windowRounding)"
[[ "$(qs_for_harness ipc call settings-system-test commit windowRounding 9999)" == "true" ]] \
    || fail 'an out-of-range value should be clamped by the schema, not refused outright'
[[ "$(qs_for_harness ipc call settings-system-test stored windowRounding)" != "9999" ]] \
    || fail 'an out-of-range value was stored unclamped'

[[ "$(qs_for_harness ipc call settings-system-test commit __not_a_setting__ 1)" == "false" ]] \
    || fail 'commitPreference accepted a key outside the schema'

# ── Reset spans every store, not just the schema one ─────────────────────────
qs_for_harness ipc call settings-system-test seedHome >/dev/null
qs_for_harness ipc call settings-system-test commit dockHideDelayMs 900 >/dev/null
sleep 0.4

home_before="$(qs_for_harness ipc call settings-system-test homeState)"
jq -e '.count == 1 and .initialized == true' <<<"$home_before" >/dev/null \
    || fail "the Home fixture did not apply: $home_before"
[[ "$(qs_for_harness ipc call settings-system-test stored dockHideDelayMs)" == "900" ]] \
    || fail 'the dock fixture did not apply'

qs_for_harness ipc call settings-system-test restoreDefaults >/dev/null
sleep 0.6

[[ "$(qs_for_harness ipc call settings-system-test stored dockHideDelayMs)" == "250" ]] \
    || fail 'reset did not restore a schema default'

home_after="$(qs_for_harness ipc call settings-system-test homeState)"
jq -e '.count == 0 and .initialized == false' <<<"$home_after" >/dev/null \
    || fail "reset left the Home accessory store customised: $home_after"

# Resetting a stored value does not by itself tell Hyprland anything, so the
# reset must re-apply compositor-backed defaults too.
for _ in $(seq 1 40); do
    [[ "$(hyprctl -j getoption decoration:rounding | jq -r .int)" == "18" ]] && break
    sleep 0.1
done
[[ "$(hyprctl -j getoption decoration:rounding | jq -r .int)" == "18" ]] \
    || fail "reset did not re-apply the compositor default (rounding=$(hyprctl -j getoption decoration:rounding | jq -r .int))"

trap - EXIT
restore
printf 'settings commit/reset contract: PASS\n'