#!/usr/bin/env bash
# SPDX-FileCopyrightText: 2026 Marco Allegretti <mightymarco4@gmail.com>
# SPDX-License-Identifier: GPL-2.0-or-later

set -euo pipefail

repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"

effect_qml="$repo_root/kwin/effects/shift-tile-preview/contents/ui/main.qml"
effect_metadata="$repo_root/kwin/effects/shift-tile-preview/metadata.json"
effects_cmake="$repo_root/kwin/effects/CMakeLists.txt"
tiling_script="$repo_root/kwin/scripts/shift-tiling/contents/ui/main.qml"
env_config="$repo_root/envmanager/config.h"

require_line() {
    local file="$1"
    local needle="$2"

    if ! grep -Fq -- "$needle" "$file"; then
        echo "Missing dynamic tile motion invariant in ${file#$repo_root/}: $needle" >&2
        exit 1
    fi
}

reject_line() {
    local file="$1"
    local needle="$2"

    if grep -Fq -- "$needle" "$file"; then
        echo "Rejected dynamic tile motion pattern in ${file#$repo_root/}: $needle" >&2
        exit 1
    fi
}

require_line "$effects_cmake" "add_kwin_effect(shift-tile-preview shift-tile-preview)"
require_line "$effect_metadata" '"Id": "shift-tile-preview"'
require_line "$effect_metadata" '"X-Plasma-API": "declarativescript"'

require_line "$env_config" '{"shift-tilingEnabled", convergenceModeEnabled}'
require_line "$env_config" '{"shift-tile-previewEnabled", convergenceModeEnabled}'
require_line "$env_config" '"shift-tile-preview"'
require_line "$env_config" '"shift-tiling"'

require_line "$effect_qml" "KWinComponents.SceneEffect"
require_line "$effect_qml" "ShellSettings.Settings.dynamicTilingEnabled"
require_line "$effect_qml" "interactiveMoveResizeStarted.connect"
require_line "$effect_qml" "interactiveMoveResizeStepped.connect"
require_line "$effect_qml" "interactiveMoveResizeFinished.connect"
require_line "$effect_qml" "Behavior on x"
require_line "$effect_qml" "Behavior on y"
require_line "$effect_qml" "Behavior on width"
require_line "$effect_qml" "Behavior on height"
require_line "$effect_qml" "showPreview(\"insert\""
require_line "$effect_qml" "showPreview(\"float\""
require_line "$effect_qml" "showPreview(\"restore\""
require_line "$effect_qml" "readonly property real insertIntentDeadZone: 0.18"
require_line "$effect_qml" "if (Math.abs(fromCenterX) < insertIntentDeadZone && Math.abs(fromCenterY) < insertIntentDeadZone)"

require_line "$tiling_script" "readonly property real stablePrimaryRatio: 0.58"
require_line "$tiling_script" "readonly property real insertIntentDeadZone: 0.18"
require_line "$tiling_script" "function orderedWindowsForScreen(outputName)"
require_line "$tiling_script" "function buildStableStack(windows, startIndex)"
require_line "$tiling_script" "function buildStableLayout(windows)"
require_line "$tiling_script" "function setStableLayout(outputName, windows)"
require_line "$tiling_script" "setStableLayout(outputName, windows)"
require_line "$tiling_script" "setStableLayout(outputName, remaining)"
require_line "$tiling_script" "retileScreen(name)"
require_line "$tiling_script" "retileScreen(targetName)"
require_line "$tiling_script" "if (Math.abs(fromCenterX) < insertIntentDeadZone && Math.abs(fromCenterY) < insertIntentDeadZone)"

reject_line "$tiling_script" "targetKey = lastLeafKey(rootNode)"
reject_line "$tiling_script" "setScreenLayout(outputName, splitLeaf(rootNode, targetKey"
reject_line "$tiling_script" "KWinComponents.Workspace.showOutline(dragOutlineRect)"
reject_line "$tiling_script" "KWinComponents.Workspace.hideOutline()"

printf '%s\n' 'dynamic-tiles-motion-ok'