#!/bin/bash

# Disable the gosh darn XON/XOFF function that serves no purpose but to confuse me when I accidentally press Ctrl+S
stty -ixon

# Find the path of the git repository relative to this file.
export __COMMON_CONFIGS=$(readlink -e "$( dirname "$(realpath -e "${BASH_SOURCE[0]}")" )/..")
# Set the SSH auth sock to the central location
if [[ -n $SSH_AUTH_SOCK ]] && [[ $SSH_AUTH_SOCK != $HOME/.ssh/ssh_auth_sock ]]; then
  ln -sf "$SSH_AUTH_SOCK" "$HOME/.ssh/ssh_auth_sock"
fi
export SSH_AUTH_SOCK="$HOME/.ssh/ssh_auth_sock"

# Set TZ if it's not set
LOCALZONE=$(readlink -e /etc/localtime); export TZ=${TZ:-${LOCALZONE#/usr/share/zoneinfo/}}
# Install EDITOR
export EDITOR='nvim'
# Install PAGER
export PAGER='less --mouse'
# Install BROWSER
export BROWSER='firefox -P Mari --class Firefox.Main'
# Set up the vim config path
export VIM_CONFIG_DIR=$__COMMON_CONFIGS/vim

# Set potentially-destructive commands to use interactive modes
alias rm="rm -i"
alias cp="cp -i"
alias mv="mv -i"

# Use a larger number of KDF rounds and the secure ed25519 key type by default.
alias ssh-keygen="ssh-keygen -o -a 100 -b 4096 -t ed25519"

# Reload this file's (and other customizations') aliases.
function reload_bashrc()
{
  . "$HOME"/.bashrc
}

# Check if the git repository is fully synced.
function __common_configs_in_sync()
{
  (
    # Failure modes, in order:
    #   exit 9: Problem cd'ing or getting commit hashes - things that should never fail
    cd "$__COMMON_CONFIGS" || exit 9
    localCommit=$(git show-ref --verify --hash refs/heads/main) || exit 9
    if [[ $1 == --force-fetch ]] || [[ ! -f .last-fetch ]] || [[ $(date --reference=.last-fetch +%s) -lt $(date --date='5 minutes ago' +%s) ]]; then
      git fetch --quiet origin && touch .last-fetch
    fi
    remoteCommit=$(git show-ref --verify --hash refs/remotes/origin/main) || exit 9
    #   exit 1: master is not the commit which is checked out.
    [[ $(git symbolic-ref HEAD) == "refs/heads/main" ]] || exit 1
    #   exit 2: master and origin/master are different.
    [[ $localCommit == $remoteCommit ]] || exit 2
    #   exit 3: There are staged changes.
    git diff-index --cached --exit-code --quiet HEAD || exit 3
    #   exit 4: There are unstaged changes.
    git diff-files --exit-code --quiet || exit 4
  )
}

function help_prompt() {
  echo '\ Help\ page\ '"$@"'\ ?ltline\ %lt?L/%L.:byte\ %bB?s/%s..?\ (END):?pB\ %pB\\%..(press h for help or q to quit)'
}
function man ()
{
  if command man "$@" >&/dev/null; then
    command man "$@"
  elif builtin help -m "$@" >&/dev/null; then
    builtin help -m "$@" | command man -l -r "$(help_prompt "$@")" -
  else
    command man "$@"
  fi
}

function help ()
{
  if builtin help -m "$@" >&/dev/null; then
    builtin help -m "$@" | command man -l -r "$(help_prompt "$@")" -
  elif command man "$@" >&/dev/null; then
    command man "$@"
  else
    builtin help -m "$@"
  fi
}


source "$__COMMON_CONFIGS"/bash/bash_tmux.sh

PROMPT_COMMAND=""
export GITAWAREPROMPT="$__COMMON_CONFIGS"/bash/git-aware-prompt
source "$GITAWAREPROMPT"/main.sh

function __prettylastexit() {
  local exitcode=$?
  if [[ -z $exitcode ]]; then
    echo "[---]$txtrst "
  elif [[ $exitcode == 0 ]]; then
    echo "$txtgrn[ OK]$txtrst "
  else
    printf "$txtred[%3.3s]$txtrst " "$exitcode"
  fi
}

function __prettyconfigstate() {
  __common_configs_in_sync
  local exitcode=$?
  case $exitcode in
    0) ;;
    2) echo; echo "${txtgrn}<config update ready>${txtrst}"; ;;
    3) echo; echo "${txtylw}<config change in progress>${txtrst}"; ;;
    4) echo; echo "${txtylw}<config change in progress>${txtrst}"; ;;
    *) echo; echo "${txtred}<config error>$txtrst" ;;
  esac
}

PS1='$(__prettylastexit)\[$bldred\]${debian_chroot:+($debian_chroot)}\[$txtrst\]\[$txtpur\]\u\[$txtrst\]\[$txtylw\]@\[$txtrst\]\[$txtblu\]\h\[$txtrst\]:\[$bldgrn\]\w\[$txtrst\] \[$txtcyn\]$git_branch\[$txtrst\]\[$bldred\]${git_dirty}\[$txtrst\]$(__prettyconfigstate)\n\$ '