From b420dd99ffaa647cd1d8e97ad4b1e6914b03a811 Mon Sep 17 00:00:00 2001
From: "Deavon M. McCaffery" <dmccaffery@users.noreply.github.com>
Date: Tue, 24 Nov 2020 03:50:38 +0000
Subject: [PATCH] WIP

---
 src/sh/install/darwin.sh | 55 +++++++++++++++++++++++++++++++++-------
 src/sh/scripts/use-shell |  3 ++-
 2 files changed, 48 insertions(+), 10 deletions(-)

diff --git a/src/sh/install/darwin.sh b/src/sh/install/darwin.sh
index a4ff879..97b5bd4 100755
--- a/src/sh/install/darwin.sh
+++ b/src/sh/install/darwin.sh
@@ -1,30 +1,67 @@
 #!/usr/bin/env sh
 
+set -e
+
+__am_prompt_ensure_rosetta() {
+
+    # determine if we are on x86
+    if [ "$(uname -m)" = "x86_64" ]; then
+
+        # install homebrew using defaults
+        __am_prompt_install_darwin
+
+        # move on immediately
+        return $?
+    fi
+
+    # install rosetta 2
+    softwareupdate --install-rosetta --agree-to-license
+
+    # create the homebrew directory
+    if [ ! -d "/opt/homebrew" ]; then
+
+        # create the homebrew path
+        sudo mkdir -p /opt/homebrew
+
+        # chown the path
+        sudo chown /opt/homebrew $(whoami):staff
+    fi
+
+    # install homebrew in rosetta
+    __am_prompt_install_darwin x86_64 /usr/local
+
+    # install homebrew for apple silicon
+    __am_prompt_ensure_rosetta $(uname -m) /opt/homebrew
+}
+
 __am_prompt_install_darwin() {
     local BREWS='openssl git go nvm python'
+    local ARCH=${1:-"x86-64"}
+    local HOMEBREW_PREFIX="${2:-/usr/local}"
+    local BREW_CMD="${HOMEBREW_PREFIX}/bin/brew"
 
-    if ! type brew 1>/dev/null 2>&1; then
+    if ! type "${BREW_CMD}" 1>/dev/null 2>&1; then
         $ECHO "${CLR_SUCCESS}installing homebrew...${CLR_CLEAR}"
-        bash -c "CI=true $(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh) && brew config"
+        arch -${ARCH} /bin/bash -c "HOMEBREW_PREFIX=${HOMEBREW_PREFIX} CI=true $(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh) && ${BREW_CMD} config"
     fi
 
     $ECHO "${CLR_SUCCESS}updating homebrew...${CLR_CLEAR}"
-    brew update
+    ${BREW_CMD} update
 
     set +e
 
     for pkg in $BREWS; do
-        if brew list --formula -1 | grep -q "^${pkg}\$"; then
+        if ${BREW_CMD} list --formula -1 | grep -q "^${pkg}\$"; then
             $ECHO "${CLR_SUCCESS}upgrading: $pkg...${CLR_CLEAR}"
-            brew upgrade $pkg 2>/dev/null
-            brew link --overwrite $pkg 2>/dev/null
+            ${BREW_CMD} upgrade $pkg 2>/dev/null
+            ${BREW_CMD} link --overwrite $pkg 2>/dev/null
         else
             $ECHO "${CLR_SUCCESS}installing: $pkg...${CLR_CLEAR}"
-            brew install $pkg
+            ${BREW_CMD} install $pkg
         fi
     done
 
-    local NVM_PATH=$(brew --prefix nvm)
+    local NVM_PATH=$(${BREW_CMD} --prefix nvm)
 
     if [ -f "$NVM_PATH/nvm.sh" ]; then
         $ECHO "${CLR_SUCCESS}setting up nvm...${CLR_CLEAR}"
@@ -38,4 +75,4 @@ __am_prompt_install_darwin() {
     git config --system credential.helper osxkeychain
 }
 
-__am_prompt_install_darwin
+__am_prompt_ensure_rosetta
diff --git a/src/sh/scripts/use-shell b/src/sh/scripts/use-shell
index 8507dcc..39faebd 100755
--- a/src/sh/scripts/use-shell
+++ b/src/sh/scripts/use-shell
@@ -48,7 +48,8 @@ __am_prompt_use_shell() {
     echo "${CLR_SUCCESS}"
     echo "##############################################################################"
     echo "##############################################################################"
-    echo "     PLEASE RUN: exec -l \$SHELL # ($SHELL)"
+    echo "     # \$SHELL will be $SHELL"
+    echo "     PLEASE RUN: exec -l \$SHELL"
     echo "##############################################################################"
     echo "##############################################################################"
     echo "${CLR_CLEAR}"