#!/usr/bin/env sh
# copilot-update.sh
# Zieht die neueste Version des Copilot-Setup-Repos und aktualisiert:
#   - Globale Git-Templates (~/.git-templates/)
#   - VS Code Prompt-Dateien
#   - Git-Hooks im aktuellen Repo (pre-commit, post-commit)
#   - .github/copilot-instructions.md (nur wenn noch TODO-Platzhalter enthalten)
#
# Usage:
#   copilot-update.sh          # aktuelles Verzeichnis (Git-Repo optional)
#   git copilot-update         # via Git-Alias

SETUP_REPO_SSH="ssh://git@192.168.178.6:2222/cschulz/rd13_copilot_setup.git"
SETUP_REPO_HTTP="http://192.168.178.6:8083/cschulz/rd13_copilot_setup.git"
CACHE_DIR="${COPILOT_SETUP_DIR:-$HOME/.copilot-setup}"

echo "=== Copilot Update ==="

# ── 1. Setup-Repo Cache aktuell halten ───────────────────────────────────────
if [ -d "$CACHE_DIR/.git" ]; then
    echo "  → Pulling latest from setup repo..."
    if git -C "$CACHE_DIR" pull --ff-only --quiet 2>/dev/null; then
        echo "  ✓ Cache aktualisiert: $CACHE_DIR"
    else
        echo "  ✗ git pull fehlgeschlagen – versuche neu zu klonen..."
        rm -rf "$CACHE_DIR"
    fi
fi

if [ ! -d "$CACHE_DIR/.git" ]; then
    echo "  → Klone Setup-Repo (SSH)..."
    if git clone --quiet "$SETUP_REPO_SSH" "$CACHE_DIR" 2>/dev/null; then
        echo "  ✓ Geklont via SSH"
    else
        echo "  ✗ SSH fehlgeschlagen – versuche HTTP-Fallback..."
        if git clone --quiet "$SETUP_REPO_HTTP" "$CACHE_DIR" 2>/dev/null; then
            echo "  ✓ Geklont via HTTP"
        else
            echo ""
            echo "  ✗ FEHLER: Setup-Repo nicht erreichbar."
            echo "    SSH:  $SETUP_REPO_SSH"
            echo "    HTTP: $SETUP_REPO_HTTP"
            exit 1
        fi
    fi
fi

SOURCE="$CACHE_DIR"

# ── 2. Globale Git-Templates aktualisieren ────────────────────────────────────
GIT_TEMPLATE_DIR="$HOME/.git-templates"
mkdir -p "$GIT_TEMPLATE_DIR/.github" "$GIT_TEMPLATE_DIR/.vscode" \
         "$GIT_TEMPLATE_DIR/hooks"   "$GIT_TEMPLATE_DIR/docs" \
         "$GIT_TEMPLATE_DIR/history/summary"

cp "$SOURCE/git-templates/.github/copilot-instructions.md" "$GIT_TEMPLATE_DIR/.github/"
cp "$SOURCE/git-templates/.vscode/settings.json"           "$GIT_TEMPLATE_DIR/.vscode/"
cp "$SOURCE/git-templates/.vscode/extensions.json"         "$GIT_TEMPLATE_DIR/.vscode/"
cp "$SOURCE/git-templates/hooks/pre-commit"                "$GIT_TEMPLATE_DIR/hooks/"
cp "$SOURCE/git-templates/hooks/post-commit"               "$GIT_TEMPLATE_DIR/hooks/"
chmod +x "$GIT_TEMPLATE_DIR/hooks/pre-commit" "$GIT_TEMPLATE_DIR/hooks/post-commit"
if [ -f "$SOURCE/git-templates/hooks/post-merge" ]; then
    cp "$SOURCE/git-templates/hooks/post-merge" "$GIT_TEMPLATE_DIR/hooks/"
    chmod +x "$GIT_TEMPLATE_DIR/hooks/post-merge"
fi
cp "$SOURCE/git-templates/docs/USER.md"       "$GIT_TEMPLATE_DIR/docs/"
cp "$SOURCE/git-templates/docs/ADMIN.md"      "$GIT_TEMPLATE_DIR/docs/"
cp "$SOURCE/git-templates/docs/MAINTAINER.md" "$GIT_TEMPLATE_DIR/docs/"
cp "$SOURCE/git-templates/history/summary/PROJECT_CONTEXT.md" "$GIT_TEMPLATE_DIR/history/summary/"

echo "  ✓ ~/.git-templates/ aktualisiert"

# ── 3. VS Code Prompt-Dateien aktualisieren ───────────────────────────────────
if [ -d "$HOME/.vscode-server/data/User" ]; then
    VSCODE_USER="$HOME/.vscode-server/data/User"
elif [ -d "$HOME/Library/Application Support/Code/User" ]; then
    VSCODE_USER="$HOME/Library/Application Support/Code/User"
else
    VSCODE_USER="$HOME/.config/Code/User"
fi

if [ -d "$VSCODE_USER" ]; then
    mkdir -p "$VSCODE_USER/prompts"
    PROMPTS_UPDATED=0
    for f in "$SOURCE/prompts/"*.prompt.md; do
        fname="$(basename "$f")"
        cp "$f" "$VSCODE_USER/prompts/$fname"
        PROMPTS_UPDATED=$((PROMPTS_UPDATED + 1))
    done
    echo "  ✓ $PROMPTS_UPDATED Prompt-Dateien aktualisiert → $VSCODE_USER/prompts/"
else
    echo "  ─ VS Code User-Verzeichnis nicht gefunden, Prompts übersprungen"
fi

# ── 4. Repo-lokale Updates (nur wenn in einem Git-Repo) ──────────────────────
REPO_ROOT=$(git rev-parse --show-toplevel 2>/dev/null)

if [ -z "$REPO_ROOT" ]; then
    echo ""
    echo "  ─ Kein Git-Repo erkannt – repo-lokale Updates übersprungen"
    echo ""
    echo "=== Done ==="
    exit 0
fi

echo ""
echo "  Git-Repo erkannt: $REPO_ROOT"

# ── 4a. Git-Hooks aktualisieren ───────────────────────────────────────────────
HOOKS_DIR="$REPO_ROOT/.git/hooks"
mkdir -p "$HOOKS_DIR"
HOOKS_UPDATED=0

for hook in pre-commit post-commit; do
    if [ -f "$SOURCE/git-templates/hooks/$hook" ]; then
        cp "$SOURCE/git-templates/hooks/$hook" "$HOOKS_DIR/$hook"
        chmod +x "$HOOKS_DIR/$hook"
        HOOKS_UPDATED=$((HOOKS_UPDATED + 1))
        echo "  ✓ .git/hooks/$hook aktualisiert"
    fi
done

if [ "$HOOKS_UPDATED" -eq 0 ]; then
    echo "  ─ Keine Hook-Templates gefunden"
fi

# ── 4b. copilot-instructions.md: nur wenn TODO-Platzhalter vorhanden ─────────
COPILOT_INSTRUCTIONS="$REPO_ROOT/.github/copilot-instructions.md"

if [ -f "$COPILOT_INSTRUCTIONS" ]; then
    if grep -q "TODO" "$COPILOT_INSTRUCTIONS" 2>/dev/null; then
        BACKUP="${COPILOT_INSTRUCTIONS}.bak"
        cp "$COPILOT_INSTRUCTIONS" "$BACKUP"
        cp "$SOURCE/git-templates/.github/copilot-instructions.md" "$COPILOT_INSTRUCTIONS"
        echo "  ✓ .github/copilot-instructions.md aktualisiert"
        echo "    (Backup: .github/copilot-instructions.md.bak)"
    else
        echo "  ─ .github/copilot-instructions.md übersprungen (keine TODOs – angepasst)"
    fi
else
    echo "  ─ .github/copilot-instructions.md nicht vorhanden, übersprungen"
fi

echo ""
echo "=== Done ==="
echo "Tipp: 'git copilot-update' jederzeit ausführen um Templates aktuell zu halten."