#!/usr/bin/env bash
# SPDX-FileCopyrightText: 2026 Marco Allegretti
# SPDX-License-Identifier: EUPL-1.2

set -euo pipefail

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

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

require_line() {
    local file="$1"
    local pattern="$2"
    local message="$3"

    grep -Eq "$pattern" "$file" || fail "$message"
}

reject_line() {
    local file="$1"
    local pattern="$2"
    local message="$3"

    ! grep -Eq "$pattern" "$file" || fail "$message"
}

readonly spdx_copyright_tag='SPDX-FileCopyrightText'
readonly spdx_license_tag='SPDX-License-Identifier'
readonly shift_copyright_pattern="${spdx_copyright_tag}: 2026 Marco Allegretti"
readonly shift_license_pattern="${spdx_license_tag}: EUPL-1[.]2"

require_line CMakeLists.txt '^add_subdirectory\(cursors\)$' \
    "top-level build must install the Shift cursor theme"
require_line CMakeLists.txt '^add_subdirectory\(desktoptheme\)$' \
    "top-level build must install the Shift Plasma desktop themes"

require_line lookandfeel/metadata.json '"Id": "org\.shift\.mobile"' \
    "look-and-feel id must remain org.shift.mobile"
require_line lookandfeel/metadata.json '"Name": "SHIFT"' \
    "look-and-feel visible name must be SHIFT"

require_line color-schemes/ShiftDark.colors '^ColorScheme=ShiftDark$' \
    "dark color scheme id must remain ShiftDark"
require_line color-schemes/ShiftDark.colors '^Name=SHIFT Dark$' \
    "dark color scheme visible name must be SHIFT Dark"
require_line color-schemes/ShiftLight.colors '^ColorScheme=ShiftLight$' \
    "light color scheme id must remain ShiftLight"
require_line color-schemes/ShiftLight.colors '^Name=SHIFT Light$' \
    "light color scheme visible name must be SHIFT Light"

require_line icons/org.shift.icons/index.theme '^Name=SHIFT$' \
    "icon theme visible name must be SHIFT"
require_line kwin/decorations/org.shift.decoration/metadata.json '"Name": "SHIFT"' \
    "window decoration visible name must be SHIFT"
require_line wallpapers/SHIFT/metadata.json '"Name": "SHIFT"' \
    "wallpaper visible name must be SHIFT"

require_line desktoptheme/shift-dark/metadata.json '"Id": "shift-dark"' \
    "dark Plasma desktop theme id must be shift-dark"
require_line desktoptheme/shift-dark/metadata.json '"Name": "SHIFT Dark"' \
    "dark Plasma desktop theme visible name must be SHIFT Dark"
require_line desktoptheme/shift-light/metadata.json '"Id": "shift-light"' \
    "light Plasma desktop theme id must be shift-light"
require_line desktoptheme/shift-light/metadata.json '"Name": "SHIFT Light"' \
    "light Plasma desktop theme visible name must be SHIFT Light"
require_line cursors/shift-cursors/index.theme '^Name=SHIFT$' \
    "cursor theme visible name must be SHIFT"

for desktop_asset in \
    desktoptheme/shift-dark/widgets/panel-background.svg \
    desktoptheme/shift-dark/solid/widgets/panel-background.svg \
    desktoptheme/shift-dark/widgets/background.svg \
    desktoptheme/shift-dark/widgets/translucentbackground.svg \
    desktoptheme/shift-light/widgets/panel-background.svg \
    desktoptheme/shift-light/solid/widgets/panel-background.svg \
    desktoptheme/shift-light/widgets/background.svg \
    desktoptheme/shift-light/widgets/translucentbackground.svg; do
    [[ -f "$desktop_asset" ]] || fail "Shift desktop theme must provide $desktop_asset"
    require_line "$desktop_asset" "$shift_copyright_pattern" \
        "$desktop_asset must attribute Shift-owned work to Marco Allegretti"
    require_line "$desktop_asset" "$shift_license_pattern" \
        "$desktop_asset must use EUPL-1.2"
done

require_line lookandfeel/contents/defaults '^ColorScheme=ShiftDark$' \
    "look-and-feel defaults must select ShiftDark"
require_line lookandfeel/contents/defaults '^Theme=org\.shift\.icons$' \
    "look-and-feel defaults must select org.shift.icons"
require_line lookandfeel/contents/defaults '^cursorTheme=shift-cursors$' \
    "look-and-feel defaults must select shift-cursors"
require_line lookandfeel/contents/defaults '^name=shift-dark$' \
    "look-and-feel defaults must select the Shift dark Plasma desktop theme"
require_line lookandfeel/contents/defaults '^theme=org\.shift\.decoration$' \
    "look-and-feel defaults must select org.shift.decoration"
require_line lookandfeel/contents/defaults '^widgetStyle=Breeze$' \
    "look-and-feel defaults must keep Breeze widget style until Shift ships a QQC2 style"
reject_line lookandfeel/contents/defaults 'breeze-dark|breeze-light|breeze_cursors|org\.kde\.Breeze' \
    "look-and-feel defaults must not select Breeze desktop, cursor, or splash themes"
reject_line lookandfeel/contents/defaults 'widgetStyle=Shift|widgetStyle=SHIFT|widgetStyle=org\.shift' \
    "look-and-feel defaults must not reference a non-existent Shift widget style"

[[ -f lookandfeel/contents/splash/Splash.qml ]] || fail "look-and-feel must provide a Shift splash implementation"
reject_line lookandfeel/contents/logout/Logout.qml 'plasma_lookandfeel_org\.kde\.lookandfeel' \
    "look-and-feel QML must use the Shift translation domain"
require_line lookandfeel/contents/logout/Logout.qml 'plasma_lookandfeel_org\.shift\.mobile' \
    "look-and-feel logout QML must use plasma_lookandfeel_org.shift.mobile"
require_line lookandfeel/Messages.sh 'plasma_lookandfeel_org\.shift\.mobile\.pot' \
    "look-and-feel Messages.sh must generate the Shift translation domain"

if [[ -f preview.sh ]]; then
    require_line preview.sh 'PLASMA_THEME=shift-light' \
        "preview light mode must select the Shift light Plasma desktop theme"
    require_line preview.sh 'PLASMA_THEME=shift-dark' \
        "preview dark mode must select the Shift dark Plasma desktop theme"
    reject_line preview.sh 'PLASMA_THEME=breeze-' \
        "preview must not select Breeze Plasma desktop themes"
    require_line preview.sh 'Shift does not ship a QQC2 style plugin yet' \
        "preview must document the Breeze QQC2 fallback"
    reject_line preview.sh 'QT_QUICK_CONTROLS_STYLE=org\.shift|QT_QUICK_CONTROLS_STYLE=SHIFT|QT_QUICK_CONTROLS_STYLE=Shift' \
        "preview must not reference a non-existent Shift QQC2 style"
else
    require_line .gitignore '^preview[.]sh$' \
        "preview.sh is a local developer script and must remain ignored when absent from CI"
fi
require_line bin/startplasmamobile.in 'Shift does not ship a QQC2 style plugin yet' \
    "runtime launcher must document the Breeze QQC2 fallback"
require_line HACKING.md 'Shift does not ship a QQC2 style plugin yet' \
    "HACKING.md must document the Breeze QQC2 fallback"
require_line .kde-ci.yml 'plasma/qqc2-breeze-style' \
    "CI must keep the Breeze QQC2 runtime dependency until Shift ships a QQC2 style"
reject_line bin/startplasmamobile.in 'QT_QUICK_CONTROLS_STYLE=org\.shift|QT_QUICK_CONTROLS_STYLE=SHIFT|QT_QUICK_CONTROLS_STYLE=Shift' \
    "runtime launcher must not reference a non-existent Shift QQC2 style"

generic_attribution_pattern='Shift contributor[s]|SHIFT Contributor[s]'

if grep -RInE "$generic_attribution_pattern" \
    .reuse \
    color-schemes/CMakeLists.txt \
    cursors \
    desktoptheme \
    fonts/CMakeLists.txt \
    fonts/README.md \
    icons/sc-places-start-here-shift.svg \
    kwin/decorations/org.shift.decoration/metadata.json \
    lookandfeel/contents/splash \
    lookandfeel/metadata.json \
    org.shift.mobile.metainfo.xml \
    shell/metadata.json \
    tests/check-shift-theme-identity.sh >/dev/null; then
    fail "Shift-owned theme identity files must not use generic Shift contributor attribution"
fi

for license_file in \
    color-schemes/CMakeLists.txt \
    cursors/CMakeLists.txt \
    desktoptheme/CMakeLists.txt \
    desktoptheme/shift-dark/plasmarc \
    desktoptheme/shift-light/plasmarc \
    fonts/CMakeLists.txt \
    fonts/README.md \
    icons/sc-places-start-here-shift.svg \
    lookandfeel/contents/splash/Splash.qml \
    tests/check-shift-theme-identity.sh; do
    require_line "$license_file" "$shift_copyright_pattern" \
        "$license_file must attribute Shift-owned work to Marco Allegretti"
    require_line "$license_file" "$shift_license_pattern" \
        "$license_file must use EUPL-1.2"
done

for metadata_file in \
    desktoptheme/shift-dark/metadata.json \
    desktoptheme/shift-light/metadata.json \
    kwin/decorations/org.shift.decoration/metadata.json; do
    require_line "$metadata_file" '"Name": "Marco Allegretti"' \
        "$metadata_file must attribute Shift-owned metadata to Marco Allegretti"
    require_line "$metadata_file" '"License": "EUPL-1\.2"' \
        "$metadata_file must use EUPL-1.2"
done

for author_file in \
    lookandfeel/metadata.json \
    shell/metadata.json \
    org.shift.mobile.metainfo.xml; do
    require_line "$author_file" 'Marco Allegretti' \
        "$author_file must not use generic Shift contributor attribution"
done

result='shift-theme-identity-ok'
printf '%s\n' "$result"