#!/bin/bash

DESTDIR=${DESTDIR:-/}
colors=(Brave Dust Human Illustrious Noble Wine Wise)
properties=(bg fg base text selected_bg selected_fg tooltip_bg tooltip_fg frame inactive_frame menubar_bg menubar_fg menuitem_fg)

common_bg=#d8d8d8
common_fg=#101010
common_base=#ffffff
common_text=#1a1a1a
common_menubar_bg=#212121
common_menubar_fg=#cecece
common_menuitem_fg=#ffffff
Dust_menubar_bg=#27241F
Brave_selected_bg=#729fcf
Dust_selected_bg=#b49372
Human_selected_bg=#f7a145
Illustrious_selected_bg=#f08290
Noble_selected_bg=#ad7fa8
Wine_selected_bg=#de4e4e
Wise_selected_bg=#97bf60
common_selected_fg=#ffffff
common_tooltip_bg=#f5f5b5
common_tooltip_fg=#000000
common_frame=#333333
common_inactive_frame=#333333

shopt -s globstar dotglob extglob

#sed() {
#    [[ "$debug" == true ]] && echo "sed $@"
#    command sed "$@"
#}

debug() {
    [[ "$debug" ]] && echo "$@"
}

install_theme() {
    [[ ! -d "zuki-themes" ]] && update
    for color in ${colors[@]};do
        if [[ -d "Zukitwo-$color" ]];then
            printf "Installing \"Zukitwo-$color\""
            if [[ "$user_install" ]];then
                printf "...\n"
                cp -r "Zukitwo-$color/" "$HOME/.themes"
            else
                echo " system-wide..."
                mkdir -p "$DESTDIR/usr/share/themes/"
                cp -r "$PWD/Zukitwo-$color/" "$DESTDIR/usr/share/themes/"
            fi
        else
            generate_theme "$color"
        fi
    done
    if [[ "$user_install" ]];then
        echo "Installing Xfwm themes..."
        cp -r Zukitwo-*-Xfwm/ "$HOME/.themes"
        echo "Installing Openbox themes..."
        cp -r Zukitwo-*-Openbox/ "$HOME/.themes"
    else
        echo "Installing Xfwm themes system-wide..."
        mkdir -p "$DESTDIR/usr/share/themes/"
        cp -r "$PWD"/Zukitwo-*-Xfwm/ "$DESTDIR/usr/share/themes/"
        echo "Installing Openbox themes system-wide..."
        cp -r "$PWD"/Zukitwo-*-Openbox/ "$DESTDIR/usr/share/themes/"
    fi
    printf '\n'
}

uninstall_theme() {
    printf "Uninstalling..."
    for color in ${colors[@]};do
        printf " \"Zukitwo-$color\""
        rm -rf "$HOME/.themes/Zukitwo-$color/" "$DESTDIR/usr/share/themes/Zukitwo-$color/" 2>/dev/null >/dev/null
    done
    printf '\n\n\n'
}

fix_line_endings() {
    printf "Correcting line endings..."
    for file in $@;do
        printf " \"$(basename $file)\""
        sed -i.bak 's/\r//' "$file"
    done
    printf '\n\n'
}

patch() {
    if [[ "$debug" ]];then
        command patch --verbose "$@"
    else
        command patch "$@"
    fi
}

patch_theme() {
    echo "Patching zuki-themes..."
    echo "If these files were already patched before, you'll see errors. Ignore them."
    cd zuki-themes
    echo "Resetting zuki-themes git repo..."
    git reset --hard HEAD
    cd "$OLDPWD"
    fix_line_endings "./zuki-themes/Zukitwo/gtk-2.0/widgets/panel.rc" "./zuki-themes/Zukitwo/gtk-2.0/gtkrc" "./Zukitwo-colors-common/patches/panel.rc.patch" "./Zukitwo-colors-common/patches/enable-dark-menubar.patch"
    yes | patch ./zuki-themes/Zukitwo/gtk-2.0/widgets/panel.rc <./Zukitwo-colors-common/patches/panel.rc.patch
    yes | patch ./zuki-themes/Zukitwo/gtk-2.0/gtkrc <./Zukitwo-colors-common/patches/enable-dark-menubar.patch
    for zuki_theme in ./zuki-themes/*/;do
        pushd "$zuki_theme/"
        rm -rf "xfwm4"
        popd
    done
    OLDIFS="$IFS"
    IFS=$'\n'
    for file in $(find ./zuki-themes/ -type f);do
        sed -i 's/gtk_color_scheme = ./gtk_color_scheme = \"menubar_bg_color:#ffffff\\nmenubar_fg_color:#ffffff\\nmenuitem_fg_color:#ffffff\\n/g' "$file"
    done
    printf "\n"
    IFS="$OLDIFS"
    OLDIFS=
}

generate_theme() {
    if [[ ! -d "zuki-themes/" ]];then
        echo "zuki-themes does not exist. You need to run \`./make-color-themes update\`."
        exit 1
    fi
    color="$1"
    cp -r "zuki-themes/Zukitwo" "Zukitwo-$color"
    cd "Zukitwo-$color"
    echo "Creating \"Zukitwo-$color\"..."
    file_list=$(find . -type f | grep -v 'make-colors-themes')
    for property in ${properties[@]};do
        property_var_name=\$${color}_$property
        property_var_contents=$(echo \$${color}_bg)
        if [[ -z "$(eval echo $property_var_name)" ]];then
            debug "    There is no \"$property_var_name\", so we'll just use \"\$common_$property\""
            property_var_contents=$(eval echo \$common_$property)
        else
            debug "    Using \"$property_var_name\""
            property_var_contents="$(eval echo $property_var_name)"
        fi

        OLDIFS="$IFS"
        IFS=$'\n'
        property_var_contents=$(echo "$property_var_contents" | sed 's/\#/\\\#/g')
        for file in ${file_list};do
            sed -i "s/${property}_color:\#[0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F]/${property}_color:$property_var_contents/g;s/theme_${property}_color \#[0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F]/theme_${property}_color $property_var_contents/g;s/Zukitwo/Zukitwo-$color/g;s/define-color theme_${property}_color .*\;/define-color theme_${property}_color $property_var_contents\;/g" "$file" 2>/dev/null >/dev/null
        done
        IFS="$OLDIFS"
    done
    #rm -rf "xfwm4"
    cp -r ../Zukitwo-colors-common/* ./
    cd "$OLDPWD"
}

update() {
    if [[ ! -d "zuki-themes/.git" ]];then
        git submodule init zuki-themes/
        git submodule update -f zuki-themes/
    fi
    echo "Resetting zuki-themes tree..."
    git submodule deinit -f zuki-themes/
    git submodule init zuki-themes/
    echo "Getting latest revision of zuki-themes..."
    git submodule update -f -- zuki-themes/
    cd "$OLDPWD"
    printf '\n\n'
}

clean() {
    printf "Removing..."
    for color in ${colors[@]};do
        printf " \"Zukitwo-$color/\""
        rm -rf "Zukitwo-$color/"
    done
    printf '\n\n'
}

help() {
    echo "make-colors-themes - create Zukitwo-colors themes"
    echo "usage: make-colors-themes [actions]"
    echo
    echo "arguments:"
    echo "  generate        - just generate the theme"
    echo "  install         - install the theme system-wide"
    echo "  user_install    - install the theme in your ~/.themes directory"
    echo "  uninstall       - uninstall the theme"
    echo "  clean           - delete old generated files"
    echo "  patch           - patch zuki-themes file"
    echo "  update          - update the local copy of the zuki-themes repo"
    echo "  debug           - activate debug messages"
    echo "  help            - display this message"
    echo
    echo "edit the \$colors variables in the script if you'd like to only generate certain colors"
    echo
    exit
}

command_not_found() {
    echo "make-colors-themes: \`$command\` is not a valid command"
}

generate_themes() {
    generate=true
    for theme in ${colors[@]};do
        generate_theme $theme
    done
    printf "Now, type \`$0 install\` or \`$0 user_install\` to install.\n"
}

if [[ "$1" ]];then
    while [[ "$1" ]];do
        [[ "$1" == "generate" ]] && generate=true && generate_themes
        [[ "$1" == "install" ]] && install=true && install_theme
        [[ "$1" == "user-install" ]] && user_install=1 && install_theme
        [[ "$1" == "update" ]] && update=true && update
        [[ "$1" == "uninstall" ]] && uninstall=true && uninstall_theme
        [[ "$1" == "clean" ]] && clean=true clean
        [[ "$1" == "patch" ]] && patch=true && patch_theme
        [[ "$1" == "debug" ]] && debug=true
        [[ "$1" == "help" ]] && help=true && help
        [[ ! "$help" && ! "$install" && ! "$user_install" && ! "$update" && ! "$uninstall" && ! "$clean" && ! "$patch" && ! "$debug" && ! "$generate" ]] && command_not_found=1 && command="$1"
        shift
    done
else
    help
fi