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#!/usr/bin/env bash
set -eu

BASELINE_PROFILE_CONTENT=$'export PATH=/opt/tools/bin:$PATH\nexport EDITOR=vim\nexport PAGER=less\n\nexport JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64\nexport PATH=$JAVA_HOME/bin:$PATH\nexport JAVA_HOME =/usr/lib/jvm/java-17-oracle\nexport PATH=/usr/lib/jvm/java-17-oracle/bin:$PATH\n\numask 022\n'

HAS_BAK=0
if [ -f ~/.bash_profile.bak ]; then HAS_BAK=1; fi

BAK_MATCHES=0
if [ "$HAS_BAK" -eq 1 ] && printf '%s' "$BASELINE_PROFILE_CONTENT" | cmp -s ~/.bash_profile.bak -; then BAK_MATCHES=1; fi

KEEP_PROFILE_1="$(grep -Fx 'export PATH=/opt/tools/bin:$PATH' ~/.bash_profile 2>/dev/null | wc -l)"
KEEP_PROFILE_2="$(grep -Fx 'export EDITOR=vim' ~/.bash_profile 2>/dev/null | wc -l)"
KEEP_PROFILE_3="$(grep -Fx 'export PAGER=less' ~/.bash_profile 2>/dev/null | wc -l)"
KEEP_PROFILE_4="$(grep -Fx 'umask 022' ~/.bash_profile 2>/dev/null | wc -l)"

PROFILE_UNRELATED_OK=0
if [ "$KEEP_PROFILE_1" -eq 1 ] && [ "$KEEP_PROFILE_2" -eq 1 ] && [ "$KEEP_PROFILE_3" -eq 1 ] && [ "$KEEP_PROFILE_4" -eq 1 ]; then PROFILE_UNRELATED_OK=1; fi

KEEP_BASHRC_1="$(grep -Fx "alias ll='ls -alF'" ~/.bashrc 2>/dev/null | wc -l)"
KEEP_BASHRC_2="$(grep -Fx 'export PATH=/usr/local/sbin:/usr/local/bin:$PATH' ~/.bashrc 2>/dev/null | wc -l)"

BASHRC_UNRELATED_OK=0
if [ "$KEEP_BASHRC_1" -eq 1 ] && [ "$KEEP_BASHRC_2" -eq 1 ]; then BASHRC_UNRELATED_OK=1; fi

LOGIN_OUT="$(bash -lc 'set -euo pipefail; echo "JAVA=$(command -v java || true)"; echo "JAVA_HOME=$JAVA_HOME"; echo "VER=$(java -version 2>&1 | head -n 1)"; echo "PATH=$PATH"' 2>&1 || true)"
INT_OUT="$(bash -ic 'set -euo pipefail; echo "JAVA=$(command -v java || true)"; echo "JAVA_HOME=$JAVA_HOME"; echo "VER=$(java -version 2>&1 | head -n 1)"; echo "PATH=$PATH"' 2>&1 || true)"

LOGIN_ERRS="$(printf '%s\n' "$LOGIN_OUT" | grep -i 'not a valid identifier' || true)"
INT_ERRS="$(printf '%s\n' "$INT_OUT" | grep -i 'not a valid identifier' || true)"

LOGIN_VER="$(printf '%s\n' "$LOGIN_OUT" | sed -n 's/^VER=//p' | head -n 1)"
INT_VER="$(printf '%s\n' "$INT_OUT" | sed -n 's/^VER=//p' | head -n 1)"

LOGIN_JAVA="$(printf '%s\n' "$LOGIN_OUT" | sed -n 's/^JAVA=//p' | head -n 1)"
INT_JAVA="$(printf '%s\n' "$INT_OUT" | sed -n 's/^JAVA=//p' | head -n 1)"

LOGIN_JH="$(printf '%s\n' "$LOGIN_OUT" | sed -n 's/^JAVA_HOME=//p' | head -n 1)"
INT_JH="$(printf '%s\n' "$INT_OUT" | sed -n 's/^JAVA_HOME=//p' | head -n 1)"

LOGIN_PATH="$(printf '%s\n' "$LOGIN_OUT" | sed -n 's/^PATH=//p' | head -n 1)"
INT_PATH="$(printf '%s\n' "$INT_OUT" | sed -n 's/^PATH=//p' | head -n 1)"

JAVA_HOME_OK=0
if [ "$LOGIN_JH" = '/usr/lib/jvm/java-17-oracle' ] && [ "$INT_JH" = '/usr/lib/jvm/java-17-oracle' ]; then JAVA_HOME_OK=1; fi

JAVA_PATH_OK=0
if [ "$LOGIN_JAVA" = '/usr/lib/jvm/java-17-oracle/bin/java' ] && [ "$INT_JAVA" = '/usr/lib/jvm/java-17-oracle/bin/java' ]; then JAVA_PATH_OK=1; fi

NOT_FAKE_OK=0
if [ "$LOGIN_JAVA" != '/opt/tools/bin/java' ] && [ "$INT_JAVA" != '/opt/tools/bin/java' ]; then NOT_FAKE_OK=1; fi

PATH_OVERRIDE_OK=0
if printf '%s' "$LOGIN_PATH" | grep -q '^/usr/lib/jvm/java-17-oracle/bin:' && printf '%s' "$INT_PATH" | grep -q '^/usr/lib/jvm/java-17-oracle/bin:'; then PATH_OVERRIDE_OK=1; fi

if [ "$HAS_BAK" -eq 1 ] && [ "$BAK_MATCHES" -eq 1 ] && [ "$PROFILE_UNRELATED_OK" -eq 1 ] && [ "$BASHRC_UNRELATED_OK" -eq 1 ] && [ -z "$LOGIN_ERRS" ] && [ -z "$INT_ERRS" ] && [ "$JAVA_HOME_OK" -eq 1 ] && [ "$JAVA_PATH_OK" -eq 1 ] && [ "$NOT_FAKE_OK" -eq 1 ] && [ "$PATH_OVERRIDE_OK" -eq 1 ] && printf '%s' "$LOGIN_VER" | grep -q 'version "17' && printf '%s' "$INT_VER" | grep -q 'version "17'; then
  echo 'JAVA_PROFILE_OK'
else
  echo 'JAVA_PROFILE_FAIL'
fi