# Check if in git repo
git rev-parse --git-dir >/dev/null 2>&1 || exit 1

# Check if in worktree (REGRA 7 C04)
WORKTREE_PATH=$(git rev-parse --show-toplevel)
MAIN_REPO=$(git worktree list | head -1 | awk '{print $1}')

if [ "$WORKTREE_PATH" = "$MAIN_REPO" ]; then
  # Em repo principal - verificar se há worktrees disponíveis
  CURRENT_BRANCH=$(git branch --show-current)
  if [[ "$CURRENT_BRANCH" != "main" && "$CURRENT_BRANCH" != "master" ]]; then
    # VIOLAÇÃO: está em branch feature no repo principal
    echo '{"jsonrpc":"2.0","error":{"code":-32011,"message":"Worktree required","data":{"instructions":"Create worktree: git worktree add .worktrees/$(git branch --show-current)"}}}' >&2
    exit 1
  fi
fi

# Get comprehensive status
BRANCH=$(git branch --show-current)
REMOTE=$(git config --get branch.$BRANCH.remote || echo "origin")
UPSTREAM=$(git rev-parse --abbrev-ref @{u} 2>/dev/null || echo "none")

# Count ahead/behind
if [ "$UPSTREAM" != "none" ]; then
  AHEAD=$(git rev-list --count @{u}..HEAD 2>/dev/null || echo "0")
  BEHIND=$(git rev-list --count HEAD..@{u} 2>/dev/null || echo "0")
else
  AHEAD="?"
  BEHIND="?"
fi

# Uncommitted changes
UNCOMMITTED=$(git status --porcelain | grep -c "^[MADRC]" || echo "0")
UNTRACKED=$(git status --porcelain | grep -c "^??" || echo "0")

# Remote info
REMOTE_URL=$(git remote get-url $REMOTE 2>/dev/null || echo "none")

# Detect provider
if [[ "$REMOTE_URL" == *"github.com"* ]]; then
  PROVIDER="github"
elif [[ "$REMOTE_URL" == *"bitbucket.org"* ]]; then
  PROVIDER="bitbucket"
else
  PROVIDER="unknown"
fi

echo "Branch: $BRANCH"
echo "Remote: $REMOTE ($PROVIDER)"
echo "Ahead: $AHEAD | Behind: $BEHIND"
echo "Uncommitted: $UNCOMMITTED | Untracked: $UNTRACKED"

git fetch --all --prune

# Check for uncommitted changes
if [ -n "$(git status --porcelain)" ]; then
  echo '{"jsonrpc":"2.0","error":{"code":-32013,"message":"Uncommitted changes","data":{"instructions":"Commit or stash changes first: git stash"}}}' >&2
  exit 1
fi

# Detect potential conflicts
git fetch origin
CONFLICTS=$(git diff --name-only HEAD...origin/$(git branch --show-current) 2>/dev/null)
if [ -n "$CONFLICTS" ]; then
  echo "Potential conflicts in: $CONFLICTS"
  # Continue anyway with merge
fi

git pull --rebase

BRANCH=$(git branch --show-current)
PROTECTED="main master develop"

# Branch protection gate
if [[ " $PROTECTED " =~ " $BRANCH " ]]; then
  echo '{"jsonrpc":"2.0","error":{"code":-32010,"message":"Branch protection","data":{"instructions":"Cannot push directly to protected branch. Create PR instead."}}}' >&2
  exit 1
fi

# Check if upstream exists
if ! git rev-parse --abbrev-ref @{u} >/dev/null 2>&1; then
  git push -u origin $BRANCH
else
  git push
fi

# Usage: sync-commit "type(scope): description"
MESSAGE="$1"
CO_AUTHOR="Co-Authored-By: Claude-Code (Anthropic/Claude-4-Sonnet) <noreply+claude-code@anthropic.com>"

# Validate conventional commits
if ! echo "$MESSAGE" | grep -qE "^(feat|fix|docs|chore|refactor|test|style|perf|ci|build)(\(.+\))?:"; then
  echo "Warning: Message doesn't follow Conventional Commits format"
fi

# Check if there are staged changes
if [ -z "$(git diff --cached --name-only)" ]; then
  echo '{"jsonrpc":"2.0","error":{"code":-32013,"message":"No staged changes","data":{"instructions":"Stage changes first: git add <files>"}}}' >&2
  exit 1
fi

git commit -m "$(cat <<EOF
$MESSAGE

$CO_AUTHOR
EOF
)"

# Create PR
BRANCH=$(git branch --show-current)
BASE="${2:-main}"
TITLE="$1"

# Ensure branch is pushed
git push -u origin $BRANCH 2>/dev/null

# Create PR using gh CLI
gh pr create --title "$TITLE" --body "$(cat <<EOF
## Summary
[Description of changes]

## Test Plan
- [ ] Tests pass
- [ ] Manual testing done

---
Co-Authored-By: Claude-Code (Anthropic/Claude-4-Sonnet) <noreply+claude-code@anthropic.com>
EOF
)" --base "$BASE"

# Get PR URL
PR_URL=$(gh pr view --json url -q '.url')
echo "PR created: $PR_URL"

# Check PR status
PR_STATUS=$(gh pr view --json state,reviews,statusCheckRollup)
echo "$PR_STATUS"

# Pre-merge checks
PR_STATE=$(gh pr view --json state -q '.state')
if [ "$PR_STATE" != "OPEN" ]; then
  echo "PR is not open"
  exit 1
fi

# Check reviews
REVIEWS=$(gh pr view --json reviews -q '.reviews | length')
if [ "$REVIEWS" -eq 0 ]; then
  echo '{"jsonrpc":"2.0","error":{"code":-32015,"message":"Review pending","data":{"instructions":"Wait for review or delegate to code-reviewer agent"}}}' >&2
  exit 1
fi

# Check CI
CI_STATUS=$(gh pr view --json statusCheckRollup -q '.statusCheckRollup[0].conclusion')
if [ "$CI_STATUS" != "SUCCESS" ]; then
  echo '{"jsonrpc":"2.0","error":{"code":-32016,"message":"CI failed","data":{"instructions":"Fix CI failures before merge"}}}' >&2
  exit 1
fi

# Merge
gh pr merge --merge

# Full workflow
sync-to-git status
sync-to-git fetch
sync-to-git pull
# ... make changes ...
git add .
sync-to-git commit "feat(auth): add JWT validation"
sync-to-git push
sync-to-git pr create "feat(auth): add JWT validation"
# ... wait for review ...
sync-to-git pr status
sync-to-git merge