feat(sync): Initial commit

sync-dot-files.sh

@@ -0,0 +1,77 @@
+#!/bin/bash
+
+declare ssh_key
+ssh_key="${1:?}"
+
+declare -a accounts
+accounts=("${@:2}")
+declare me
+me="$(whoami)"
+
+function cleanup () {
+    popd &>'/dev/null'
+}
+trap cleanup EXIT
+
+function pprint () {
+    printf -- '%s ...\n' "${@}"
+}
+
+declare do_force
+do_force='false'
+for account_index in "${!accounts[@]}"; do
+    if [[ "${accounts[${account_index}]}" == '--force' ]] || [[ "${accounts[${account_index}]}" == '-f' ]]; then
+        do_force='true'
+    fi
+    if [[ "${accounts[${account_index}]}" == "${me}" ]]; then unset -v accounts["${account_index}"]; continue; fi
+    if ! id "${accounts[${account_index}]}" &>'/dev/null'; then unset -v accounts["${account_index}"]; continue; fi
+done
+
+if [[ "${#accounts[@]}" -eq '0' ]]; then
+    pprint 'Needs at least second account besides '"'${me}'"', exiting'
+    exit 0
+fi
+
+declare avail_keys
+avail_keys="$(ssh-add -l)"
+
+if ! grep -Piq "${ssh_key}" <<<"${avail_keys}"; then
+    pprint 'Key not loaded into agent, exiting'
+    exit 0
+fi
+
+function is_dirty () {
+    git update-index --refresh &>'/dev/null'
+    git diff-index --quiet HEAD -- || return 0
+    return 1
+}
+
+function we_are_ahead () {
+    [[ "$(git rev-list origin..HEAD)" ]] && return 0
+    return 1
+}
+
+function we_are_behind () {
+    [[ "$(git rev-list HEAD..origin)" ]] && return 0
+    return 1
+}
+
+pushd ~ &>'/dev/null'
+
+if is_dirty; then pprint 'Dir '"'$(pwd)'"' is dirty, exiting'; git status; exit 0; fi
+if we_are_behind; then pprint 'We are behind remote, exiting'; exit 0; fi
+
+if we_are_ahead || [[ "${do_force}" == 'true' ]]; then
+    pprint 'Pushing from '"'${me}'"
+    git push
+    for account in "${accounts[@]}"; do
+        echo
+        pprint 'Pulling with '"'${account}'"
+        if [[ "${do_force}" == 'true' ]]; then
+            sudo --preserve-env=SSH_AUTH_SOCK su --shell /bin/bash --command 'cd; sudo --preserve-env=SSH_AUTH_SOCK git reset --hard' "${account}"
+        fi
+        sudo --preserve-env=SSH_AUTH_SOCK su --shell /bin/bash --command 'cd; sudo --preserve-env=SSH_AUTH_SOCK git pull; sudo find '"'"'.'"'"' \( -not -user '"${account}"' -or -not -group '"${account}"' \) -print0 | xargs --no-run-if-empty --null -I '"'"'{}'"'"' chown '"${account}"':'"${account}"' '"'"'{}'"'"'' "${account}"
+    done
+else
+    pprint 'Nothing to do'
+fi