#!/bin/bash
# =============================================================================
# officer-setup — the repository
# =============================================================================
#
# Definitions only.
#
# ── Cloned as the owner, never as root ──
#
# A repository cloned by root is one the owner cannot pull, cannot commit in, and
# whose node_modules they cannot write. Every git operation here runs as the
# account, from a directory that account can stat.

[[ -n "${OFFICER_SETUP_REPO_LOADED:-}" ]] && return 0
OFFICER_SETUP_REPO_LOADED=1

OFFICER_REPO="${OFFICER_REPO:-https://gitea.officer.dev/officerdev/platform.git}"

platform_dir() { echo "${OFFICER_ROOT}/platform"; }

repo_exists() { [[ -d "$(platform_dir)/.git" ]]; }

repo_remote() { (cd "$(platform_dir)" 2>/dev/null && git remote get-url origin 2>/dev/null) || true; }
repo_branch() { (cd "$(platform_dir)" 2>/dev/null && git branch --show-current 2>/dev/null) || true; }
repo_is_dirty() { [[ -n "$(cd "$(platform_dir)" 2>/dev/null && git status --porcelain 2>/dev/null)" ]]; }

# Split an ssh:// URL into host and port, for the reachability check below.
repo_ssh_host() { sed -E 's|^ssh://[^@]*@([^:/]+).*|\1|' <<<"$1"; }
repo_ssh_port() { sed -nE 's|^ssh://[^@]*@[^:]+:([0-9]+)/.*|\1|p' <<<"$1"; }

# Can this account actually clone it?
#
# `git ls-remote` is the real question — not "does the host answer" but "can this
# account read this repository". Both prompts are disabled, because neither fails
# cleanly on its own: over https git asks for a username nobody is there to type,
# and over ssh it asks for a password or stops on host-key verification. With
# both off, an unreachable or unreadable repository is an immediate non-zero
# instead of a hang.
repo_reachable() {
  as_owner "GIT_TERMINAL_PROMPT=0 \
    GIT_SSH_COMMAND='ssh -o BatchMode=yes -o StrictHostKeyChecking=accept-new -o ConnectTimeout=8' \
    timeout 20 git ls-remote '$1' >/dev/null 2>&1" /
}

# The https form of the same repository, for a machine with no key.
repo_https_url() {
  sed -E 's|^ssh://[^@]*@([^:/]+)(:[0-9]+)?/|https://\1/|' <<<"$1"
}

clone_repo() {
  local url="$1" dest
  dest="$(platform_dir)"
  install -d -m 0755 -o "$USERNAME" -g "$(user_group)" "$OFFICER_ROOT"
  as_owner "GIT_TERMINAL_PROMPT=0 git clone '${url}' '${dest}'" /
}

pull_repo() { as_owner "git -C '$(platform_dir)' pull --ff-only" /; }