I'm starting to get kinda good at this bash thing

Author: cobyj33

.gitignore

@@ -10,4 +10,5 @@ devscripts/
 lib/ncurses-6.4/
 lib/ffmpeg-6.0/
 lib/build
-install
+install
+test*.sh

build.sh

@@ -1,11 +1,94 @@
 #!/bin/bash
 # set -xe
 
+# Use the sudo command if the user is not root
+
+project_name="ascii_video"
+author="cobyj33"
+version="0.4.0"
+github_url="https://www.github.com/cobyj33/ascii_video"
+git_repo="https://www.github.com/cobyj33/ascii_video.git"
+
+libavcodec_min_version="59.42.100"
+libavformat_min_version="59.30.100"
+libavutil_min_version="57.32.101"
+libswresample_min_version="4.8.100"
+libswscale_min_version="6.8.102"
+
+is_debian=$([[ -f "/etc/debian_version" ]])
+
+if [[ ! $is_debian -eq 0 ]]; then
+   echo "Cannot build ${project_name}. Project can only currently build \ 
+   and is only currently tested to build on Debian-Linux systems. This is in place \
+   to protect any errors that it would cause on untested architecture."
+   exit 1
+fi
+
+prompt_confirm() {
+    while true; do
+        read -r -n 1 -p "${1:-Continue?} [y/n]: " REPLY
+        echo ""
+        case $REPLY in
+        [yY]) echo ; return 0 ;;
+        [nN]) echo ; return 1 ;;
+        *) printf " \033[31m %s \n\033[0m" "invalid input"
+        esac 
+    done  
+}
+
+is_ncurses6_already_installed_globally() {
+    [[ ! $(ldconfig -p | grep "libncurses.so.6\|libncursesw.so.6") = \"\"  ]]
+    return $?
+}
+
+echo "Building ${project_name} by ${cobyj33}. Version ${version}. See source code at ${github_url}"
+
 SUDO=''
 if (( $EUID != 0 )); then
     SUDO='sudo'
 fi
 
+# Basic dependencies needed to build software on Debian-Type distributions 
+# These will be needed for ncurses and building ascii_video itself
+building_deps="git \
+    autoconf \
+    automake \
+    build-essential \
+    make \
+    cmake \
+    git \
+    libtool \
+    pkg-config"
+
+ffmpeg_deps="meson \
+    ninja-build \
+    pkg-config \
+    yasm \
+    libva-dev \
+    libvdpau-dev \
+    libvorbis-dev \
+    libxcb1-dev \
+    libxcb-shm0-dev \
+    libxcb-xfixes0-dev \
+    libunistring-dev \
+    libaom-dev \
+    libdav1d-dev"
+
+# Update current repository
+ncurses_apt="libncurses6"
+apt_deps_to_install="${building_deps} ${ncurses_apt}"
+
+if [[ ! -d $(pwd)/lib/build/ffmpeg ]]
+then
+    apt_deps_to_install="${apt_deps_to_install} ${ffmpeg_deps}"
+fi
+
+if [[ ! apt_deps_to_install -eq "" ]]
+then
+    $SUDO apt-get update
+    $SUDO apt-get install ${apt_deps_to_install}
+fi
+
 project_root=$(pwd)
 project_lib_folder=${project_root}/lib
 lib_build=${project_lib_folder}/build
@@ -22,110 +105,67 @@ ffmpeg_build=${lib_build}/ffmpeg-6.0
 
 ascii_video_build=${project_root}/build
 
-if [ ! -d ${lib_build} ]
-then
-    mkdir ${lib_build}
-fi
-
-$SUDO apt-get update
+mkdir -p ${lib_build}
 
-$SUDO apt-get install build-essential \
-cmake \
-make \
-autoconf \
-automake \
-libtool
+# Defaults to local ncurses build if that is found
+should_install_ncurses6_locally=false
 
-if [ ! -d ${ncurses_build} ] 
+if [[ $(is_ncurses6_already_installed_globally) -eq 0 ]]
 then
-    if [ ! -d ${ncurses_src} ]
-    then
-        tar -xvf ${ncurses_tar} -C ${project_lib_folder}
-    fi
+    [[ ! -d ${ncurses_build} ]] && \
+    echo "Found a working ncurses6 installation already on system." && \
+    echo "Defaulting to link toward global ncurses6 installation"
+else
+    echo "Could not find a working ncurses6 installation already on system"
+
+    if [[ is_debian -eq 0 ]] && [[ $(prompt_confirm "Would you like to install ncurses6 with apt installer" ) -eq 0 ]] \
+    && $SUDO apt-get install libncurses6 || should_install_ncurses6_locally=true
+fi
 
-    cd ${ncurses_src}
+if [[ should_install_ncurses6_locally = true ]]
+then
 
-    # mkdir ${project_lib_folder}/ncurses-6.4/build 
-    # mkdir ${project_lib_folder}/ncurses-6.4/build/data
-    if [ ! -d ${ncurses_build} ]
+    if [[ -d ${ncurses_build} ]]
     then
-        mkdir ${ncurses_build}
-    fi
-
-    if [ ! -d ${ncurses_datadir} ]
+        echo "Found local ncurses6 build at ${ncurses_build}. Not recompiling ncurses6 library"
+    elif [[ ! -d ${ncurses_build} ]]
     then
-        mkdir ${ncurses_datadir}
+        rm -rf ${ncurses_src}
+        tar -xvf ${ncurses_tar} -C ${project_lib_folder}
+        cd ${ncurses_src}
+        mkdir -p ${ncurses_build}
+        mkdir -p ${ncurses_datadir}
+
+        ./configure \
+        --prefix=${ncurses_build} \
+        --datadir=${ncurses_datadir} \
+        --without-tests \
+        --without-manpages \
+        --without-progs
+
+
+        make -j4
+        make install
+        cd ${project_root}
+        rm -rf ${ncurses_src}
     fi
 
-    ./configure \
-    --prefix=${ncurses_build} \
-    --datadir=${ncurses_datadir} \
-    --without-tests \
-    --without-manpages \
-    --without-progs
-
-
-    make -j4
-    make install
-    cd ${project_root}
-    rm -rf ${ncurses_src}
 fi
 
-if [ ! -d ${ffmpeg_build} ] 
-then
 
-    mkdir ${ffmpeg_build}
-    if [ ! -d ${ffmpeg_src} ]
-    then
-        tar -xvf ${ffmpeg_tar} -C ${project_lib_folder}
-    fi
+if [[ ! -d ${ffmpeg_build} ]]
+then
+    mkdir -p ${ffmpeg_build}
+    rm -rf ${ffmpeg_src}
+    tar -xvf ${ffmpeg_tar} -C ${project_lib_folder}
     cd ${ffmpeg_src}
 
     $SUDO apt-get update -qq
-
-    deps="autoconf \
-    automake \
-    build-essential \
-    cmake \
-    git \
-    libtool \
-    meson \
-    ninja-build \
-    pkg-config \
-    yasm \
-    libva-dev \
-    libvdpau-dev \
-    libvorbis-dev \
-    libxcb1-dev \
-    libxcb-shm0-dev \
-    libxcb-xfixes0-dev \
-    libunistring-dev \
-    libaom-dev \
-    libdav1d-dev"
-
-    $SUDO apt-get install -y \
-    autoconf \
-    automake \
-    build-essential \
-    cmake \
-    git \
-    libtool \
-    meson \
-    ninja-build \
-    pkg-config \
-    yasm \
-    libva-dev \
-    libvdpau-dev \
-    libvorbis-dev \
-    libxcb1-dev \
-    libxcb-shm0-dev \
-    libxcb-xfixes0-dev \
-    libunistring-dev \
-    libaom-dev \
-    libdav1d-dev
+    $SUDO apt-get install -y ${ffmpeg_deps}
 
 
     PKG_CONFIG_PATH="${ffmpeg_build}/lib/pkgconfig"
+
     ./configure \
     --prefix="${ffmpeg_build}" \
     --pkg-config-flags="--static" \
@@ -160,11 +200,7 @@ then
     cd ${project_root}
 fi
 
-if [ -d ${ascii_video_build} ]
-then
-    rm -rf ${ascii_video_build}
-fi
-
+rm -rf ${ascii_video_build}
 mkdir ${ascii_video_build}
 cd ${ascii_video_build}
 cmake ../