#!/usr/bin/env bash
# Push the CONTENTS of a source dir to a Gitea repo (flat, at repo root or a subdir).
# Connection (GIT_HOST/GIT_USER/GIT_TOKEN) comes from env or config/gitea.env.
# Usage: bash push_to_gitea.sh --repo <owner/name> --src <dir> [--subdir <path>] [--message "msg"]
set -euo pipefail
HERE="$(cd "$(dirname "$0")" && pwd)"
CFG="$HERE/../config/gitea.env"
if [[ -f "$CFG" ]]; then
  while IFS='=' read -r k v; do
    [[ "$k" =~ ^[A-Z_]+$ ]] || continue
    case "$k" in GIT_HOST|GIT_USER|GIT_TOKEN)
      [[ -z "${!k:-}" ]] && export "$k=$v" ;; esac
  done < "$CFG"
fi
HOST="${GIT_HOST:-}" USER_="${GIT_USER:-}" TOKEN="${GIT_TOKEN:-}"
REPO="" SRC="" SUBDIR="" MSG=""
while [[ $# -gt 0 ]]; do case "$1" in
  --repo) REPO="$2"; shift 2;; --src) SRC="$2"; shift 2;;
  --subdir) SUBDIR="$2"; shift 2;; --message) MSG="$2"; shift 2;;
  *) echo "unknown arg: $1" >&2; exit 2;; esac; done
[[ -z "$REPO" || -z "$SRC" || -z "$HOST" || -z "$TOKEN" ]] && { echo "need --repo, --src, and GIT_HOST/GIT_TOKEN" >&2; exit 2; }
[[ -d "$SRC" ]] || { echo "ERROR: src not found: $SRC" >&2; exit 2; }
[[ -z "$MSG" ]] && MSG="Update from library-manager"
HOST="${HOST#http://}"; HOST="${HOST#https://}"; HOST="${HOST%/}"
CRED="${USER_:+$USER_:}${TOKEN}"
URL="https://${CRED}@${HOST}/${REPO}.git"
scrub(){ sed -e "s/${TOKEN}/***/g"; }
WORK="$(mktemp -d)"
git clone "$URL" "$WORK" 2>&1 | scrub || { echo "ERROR: clone failed (repo must exist + host reachable + token scope)"; exit 3; }
cd "$WORK"; git checkout -B main >/dev/null 2>&1 || true
DEST="$WORK${SUBDIR:+/$SUBDIR}"; mkdir -p "$DEST"
cp -r "$SRC/." "$DEST/"
git config user.email "datasheet-bot@local"; git config user.name "library-manager"
git add -A
if git diff --cached --quiet; then echo "Nothing new for $REPO."; else
  git commit -m "$MSG" >/dev/null; git push -u origin main 2>&1 | scrub
fi
echo "Pushed to https://${HOST}/${REPO}${SUBDIR:+/$SUBDIR} ($(find "$SRC" -type f | wc -l | tr -d ' ') file(s))"