#! /bin/bash

# define bash directory
BASH_DIR="${HOME}"/scripts/bash/

#decide on packages
# get os
if [[ $(uname -s) == "Darwin" ]]
then
    OS="macos"
elif [[ $(uname -s) == "Linux" ]]
then
    if [[ -f /etc/arch-release ]]
    then
        OS="arch"
    elif [[ -f /etc/debian_version ]]
    then
        OS="debian"
    fi
else
    exit 1
fi

case $OS in
    macos)
        GHI="ghi"
        FD="fd"
        ;;
    arch)
        GHI="ghi"
        FD="fd"
        ;;
    debian)
        GHI="ghi"
        FD="fd-find" #command is fdfind
        ;;
esac



# Check if brew exists; if not, which package manager
if command -v brew > /dev/null 2>&1
then
    PACMAN='brew install'
    PACSEARCH='brew list'
else
    declare -A osInfo;
    osInfo[/etc/redhat-release]='sudo yum install'
    osInfo[/etc/arch-release]='sudo pacman -S'
    osInfo[/etc/gentoo-release]='sudo emerge'
    osInfo[/etc/SuSE-release]='sudo zypper in'
    osInfo[/etc/debian_version]='sudo apt install -y'

    declare -A osSearch;
    osInfo[/etc/redhat-release]='yum list installed'
    osInfo[/etc/arch-release]='sudo pacman -Q'
    osSearch[/etc/gentoo-release]="cd /var/db/pkg/ && ls -d */*| sed 's/\/$//'"
    osSearch[/etc/SuSE-release]='rpm -qa'
    osSearch[/etc/debian_version]='apt list --installed'

    for f in "${!osInfo[@]}"
    do
        if [[ -f $f ]];then
            PACMAN="${osInfo[$f]}"
        fi
    done

    for s in "${!osSearch[@]}"
    do
        if [[ -f $s ]];then
            PACSEARCH="${osSearch[$s]}"
        fi
    done
fi

# Ensure jq is installed
if ! command -v jq > /dev/null 2>&1
then
    echo -e "\u001b[1;38mInstalling \`jq\`...\u001b[0;38m" && \
    $PACMAN jq && \
    echo -e "\u001b[1;38;5;2m\`jq\` installed successfully\u001b[0;38m"
fi


# Parse json colours to bash
jq -r 'to_entries|map("\(.key)=\(.value|tostring)")|.[]' ${BASH_DIR}/colours/textcolours.json | \
sed -e 's/=\([^" >][^ >]*\)/="\1"/g' >> \
${BASH_DIR}/textcolours.txt && source ${BASH_DIR}/textcolours.txt


# Clean up
clean-exit() {
    [[ -f ${BASH_DIR}/textcolours.txt ]] && \
    rm ${BASH_DIR}/textcolours.txt
    exit $?
}



brew_install() {
    PACINSTALL=false
    for i in "${@}"; #previously @:2
    do
        if ! command -v "${i}" > /dev/null 2>&1
        then
            PACINSTALL=true
            $PACMAN "${i}"
        fi
    done
    if [ "${PACINSTALL}" = true ]
    then
        return 0
    else
        return 1
    fi
}

is-command-then-install() {
    #install deps if command is not found
    for i in "${@}"
    do
        brew_install "${i}"
    done
}

# get script dependencies
is-command-then-install "${GHI}"


# Clean up
clean-exit