#!/bin/sh

: ${XDG_CONFIG_HOME:="${HOME}/.config"}
: ${BIN_DIR:="${HOME}/.local/bin"}
export PATH="${BIN_DIR}:${PATH}"

set -e

GIT=$(which git || true)
if [ -z "${GIT}" ]; then
  echo "git required."
  exit 1
fi

PIP=$(which pip || true)
if [ -z "${PIP}" ]; then
  echo "installing pip to ${BIN_DIR}"
  mkdir -p ${BIN_DIR}
  export PATH="${BIN_DIR}:${PATH}"
  PIP="${BIN_DIR}/pip"
  curl -s https://bootstrap.pypa.io/get-pip.py | python - --user
fi

VCSH=$(which vcsh || true)
if [ -z "${VCSH}" ]; then
  echo "installing vcsh to ${BIN_DIR}"
  mkdir -p ${BIN_DIR}
  export PATH="${BIN_DIR}:${PATH}"
  VCSH="${BIN_DIR}/vcsh"
  curl -s https://raw.githubusercontent.com/RichiH/vcsh/master/vcsh -o "${VCSH}"
  chmod 700 ${VCSH}
fi

MR=$(which mr || true)
if [ -z "${MR}" ]; then
  echo "installing mr to ${BIN_DIR}"
  mkdir -p ${BIN_DIR}
  export PATH="${BIN_DIR}:${PATH}"
  MR="${BIN_DIR}/mr"
  curl -s https://raw.githubusercontent.com/joeyh/myrepos/master/mr -o "${MR}"
  chmod 700 ${MR}
fi

echo "preparing vcsh hook directories..."
: ${VCSH_HOOK_A:="${XDG_CONFIG_HOME}/vcsh/hooks-available"}
: ${VCSH_HOOK_E:="${XDG_CONFIG_HOME}/vcsh/hooks-enabled"}
mkdir -p ${VCSH_HOOK_A} ${VCSH_HOOK_E}

echo "installing vcsh sparse checkout hook..."
HOOK_SCRIPT="post-init.sparse-checkout"
cd ${VCSH_HOOK_A}
cat > "${HOOK_SCRIPT}" <<'HOOK'
#!/bin/sh
git config core.sparseCheckout true
cat >> $GIT_DIR/info/sparse-checkout << EOF
*
!.gitignore
!.travis.yml
!LICENSE*
!README*
!Vagrantfile
!docs
EOF
HOOK
chmod 755 "${HOOK_SCRIPT}"
cd ${VCSH_HOOK_E}
ln -sf ../hooks-available/${HOOK_SCRIPT} ${HOOK_SCRIPT}

echo "installing vcsh fix permissions hook..."
HOOK_SCRIPT="post-command.fixperms"
cd ${VCSH_HOOK_A}
cat > "${HOOK_SCRIPT}" <<'HOOK'
#!/bin/bash
: ${XDG_CONFIG_HOME:="${HOME}/.config"}
: ${VCSH_PERM_D:=$XDG_CONFIG_HOME/vcsh/perms.d}
[ -d ${VCSH_PERM_D} ] || exit 0
cat ${VCSH_PERM_D}/* | perl -ane "print \"chmod \$F[0] $HOME/\$F[1]\n\"" | sh
HOOK
chmod 755 "${HOOK_SCRIPT}"
cd ${VCSH_HOOK_E}
ln -sf ../hooks-available/${HOOK_SCRIPT} ${HOOK_SCRIPT}

echo "checking out myrepos homedir repository..."
vcsh clone https://gitlab.stillwell.me/mark/vcsh-homedir-myrepos.git myrepos