#!/usr/bin/env bash
# deploy.sh – Copilot-Setup auf macOS oder Linux mit bash deployen
# Usage:
#   bash scripts/deploy.sh                          # Standard-Deploy (nicht-invasiv)
#   bash scripts/deploy.sh --with-self-update-hook  # + post-merge Auto-Deploy im Setup-Repo
#
# Hinweis: Setzt KEINEN globalen 'git init'-Alias und KEIN init.templateDir.
# Standard-'git init'/'git clone' bleiben unberuehrt. Opt-in pro Repo:
#   git init-copilot [pfad]      (Alias wird hier angelegt)
#   copilot-bootstrap.sh [pfad]  (bestehende Repos ausstatten)

set -euo pipefail

WITH_SELF_HOOK=0
for arg in "$@"; do
    case "$arg" in
        --with-self-update-hook) WITH_SELF_HOOK=1 ;;
        *) echo "Unbekanntes Argument: $arg" >&2; exit 2 ;;
    esac
done

REPO_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
echo "=== Copilot Setup Deploy (bash) ==="
echo "Source: $REPO_DIR"

# VS Code User-Verzeichnis portabel ermitteln (identisch zu copilot-update.sh)
detect_vscode_user_dir() {
    for d in \
        "$HOME/.vscode-server/data/User" \
        "$HOME/.vscode-server-insiders/data/User" \
        "$HOME/Library/Application Support/Code/User" \
        "$HOME/Library/Application Support/Code - Insiders/User" \
        "$HOME/Library/Application Support/VSCodium/User" \
        "$HOME/Library/Application Support/Cursor/User" \
        "$HOME/.config/Code/User" \
        "$HOME/.config/Code - Insiders/User" \
        "$HOME/.config/VSCodium/User" \
        "$HOME/.config/Cursor/User" \
        "$HOME/.var/app/com.visualstudio.code/config/Code/User" \
        "/mnt/c/Users/${USER:-}/AppData/Roaming/Code/User" \
        "/mnt/c/Users/${USER:-}/AppData/Roaming/Code - Insiders/User"
    do
        if [ -d "$d" ]; then
            printf '%s\n' "$d"
            return 0
        fi
    done
    case "$(uname -s)" in
        Darwin) printf '%s\n' "$HOME/Library/Application Support/Code/User" ;;
        *)      printf '%s\n' "$HOME/.config/Code/User" ;;
    esac
}

# ── 1. VS Code User-Verzeichnis ermitteln ─────────────────────────────────────
VSCODE_USER="$(detect_vscode_user_dir)"
echo "VS Code User dir: $VSCODE_USER"
mkdir -p "$VSCODE_USER"

# ── 2. User settings.json ─────────────────────────────────────────────────────
if [[ -f "$VSCODE_USER/settings.json" ]]; then
    echo "  ─ settings.json exists – skipping (merge manually if needed)"
    echo "    Reference: $REPO_DIR/user-settings/settings.json"
else
    cp "$REPO_DIR/user-settings/settings.json" "$VSCODE_USER/settings.json"
    echo "  ✓ settings.json deployed"
fi

# ── 3. Prompt Files ───────────────────────────────────────────────────────────
mkdir -p "$VSCODE_USER/prompts"
for f in "$REPO_DIR/prompts/"*.prompt.md; do
    fname="$(basename "$f")"
    if [[ -f "$VSCODE_USER/prompts/$fname" ]]; then
        echo "  ─ prompts/$fname already exists, skipping"
    else
        cp "$f" "$VSCODE_USER/prompts/$fname"
        echo "  ✓ prompts/$fname deployed"
    fi
done

# ── 4. Git-Templates ──────────────────────────────────────────────────────────
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/docs/history/summary"
cp "$REPO_DIR/git-templates/.github/copilot-instructions.md" "$GIT_TEMPLATE_DIR/.github/"
cp "$REPO_DIR/git-templates/.vscode/settings.json" "$GIT_TEMPLATE_DIR/.vscode/"
cp "$REPO_DIR/git-templates/.vscode/extensions.json" "$GIT_TEMPLATE_DIR/.vscode/"
cp "$REPO_DIR/git-templates/hooks/pre-commit" "$GIT_TEMPLATE_DIR/hooks/"
chmod +x "$GIT_TEMPLATE_DIR/hooks/pre-commit"
cp "$REPO_DIR/git-templates/docs/USER.md"       "$GIT_TEMPLATE_DIR/docs/"
cp "$REPO_DIR/git-templates/docs/ADMIN.md"      "$GIT_TEMPLATE_DIR/docs/"
cp "$REPO_DIR/git-templates/docs/MAINTAINER.md" "$GIT_TEMPLATE_DIR/docs/"
cp "$REPO_DIR/git-templates/docs/history/summary/PROJECT_CONTEXT.md" "$GIT_TEMPLATE_DIR/docs/history/summary/"
echo "  ✓ git-templates deployed → $GIT_TEMPLATE_DIR"
# init.templateDir wird bewusst NICHT global gesetzt – sonst wuerde jeder
# 'git init'/'git clone' (auch fremde Repos) automatisch den Quality Gate erben.
# Frueher gesetzten Wert entfernen, falls er auf unsere Templates zeigt.
CURRENT_TPL="$(git config --global --get init.templateDir || true)"
if [[ "$CURRENT_TPL" == "$GIT_TEMPLATE_DIR" ]]; then
    git config --global --unset init.templateDir || true
    echo "  ✓ altes globales init.templateDir entfernt (nicht mehr invasiv)"
else
    echo "  ─ init.templateDir nicht global gesetzt (gewollt)"
fi

# ── 5. Bootstrap- & Update-Skripte ───────────────────────────────────────────
mkdir -p "$HOME/.local/bin"
cp "$REPO_DIR/scripts/copilot-bootstrap.sh" "$HOME/.local/bin/copilot-bootstrap.sh"
chmod +x "$HOME/.local/bin/copilot-bootstrap.sh"
echo "  ✓ copilot-bootstrap.sh installed to ~/.local/bin/"
if [[ -f "$REPO_DIR/scripts/copilot-bootstrap.fish" ]]; then
    cp "$REPO_DIR/scripts/copilot-bootstrap.fish" "$HOME/.local/bin/copilot-bootstrap.fish"
    chmod +x "$HOME/.local/bin/copilot-bootstrap.fish"
    echo "  ✓ copilot-bootstrap.fish installed to ~/.local/bin/"
fi
cp "$REPO_DIR/scripts/copilot-update.sh" "$HOME/.local/bin/copilot-update.sh"
chmod +x "$HOME/.local/bin/copilot-update.sh"
echo "  ✓ copilot-update.sh installed to ~/.local/bin/"
if [[ -f "$REPO_DIR/scripts/copilot-update.fish" ]]; then
    cp "$REPO_DIR/scripts/copilot-update.fish" "$HOME/.local/bin/copilot-update.fish"
    chmod +x "$HOME/.local/bin/copilot-update.fish"
    echo "  ✓ copilot-update.fish installed to ~/.local/bin/"
fi

# ── 6. Git-Aliase: init → auto-bootstrap | copilot-update → updater ──────────
# Verwendet git --exec-path um Rekursion zu vermeiden (kein Alias-Loop).
# Kein Override des Standard-'git init' mehr. Frueheren invasiven Alias entfernen.
CURRENT_INIT_ALIAS="$(git config --global --get alias.init || true)"
if [[ "$CURRENT_INIT_ALIAS" == *copilot-bootstrap* ]]; then
    git config --global --unset alias.init || true
    echo "  ✓ alter invasiver 'git init'-Alias entfernt"
fi
# Opt-in: explizites 'git init-copilot' macht git init + bootstrap.
# shellcheck disable=SC2016  # Alias absichtlich literal – git expandiert zur Laufzeit
git config --global alias.init-copilot '!f() { dir=.; for a in "$@"; do case "$a" in -*) ;; *) dir="$a" ;; esac; done; "$(git --exec-path)/git-init" "$@" && "$HOME/.local/bin/copilot-bootstrap.sh" "$dir"; }; f'
echo "  ✓ git alias 'init-copilot' gesetzt (opt-in: git init + copilot-bootstrap)"
git config --global alias.copilot-update '!~/.local/bin/copilot-update.sh'
echo "  ✓ git alias 'copilot-update' gesetzt (aktualisiert Templates & Prompts)"

# ── 7. post-merge Hook für dieses Setup-Repo ─────────────────────────────────
# Nur mit --with-self-update-hook: nach jedem 'git pull' auf dem Setup-Repo
# wird deploy.sh automatisch erneut ausgeführt.
SELF_HOOKS_DIR="$REPO_DIR/.git/hooks"
if [[ "$WITH_SELF_HOOK" -eq 1 ]]; then
    if [[ -d "$SELF_HOOKS_DIR" ]]; then
        cat > "$SELF_HOOKS_DIR/post-merge" << 'HOOK'
#!/usr/bin/env sh
# post-merge – Auto-Deploy nach git pull auf dem Setup-Repo
echo ""
echo "  [post-merge] Setup-Repo aktualisiert – deploye Templates neu..."
SCRIPT_DIR="$(cd "$(dirname "$0")/../../scripts" && pwd)"
bash "$SCRIPT_DIR/deploy.sh"
HOOK
        chmod +x "$SELF_HOOKS_DIR/post-merge"
        echo "  ✓ post-merge Hook im Setup-Repo installiert (auto-deploy nach git pull)"
    fi
else
    echo "  ─ post-merge Auto-Deploy nicht installiert (opt-in: --with-self-update-hook)"
fi

echo ""
echo "=== Done ==="
echo "Next: Activate Settings Sync in VS Code (Cmd+Shift+P → 'Settings Sync: Turn On')"
echo "      Neues Repo mit Copilot-Setup:  git init-copilot [pfad]"
echo "      Bestehendes Repo ausstatten:   copilot-bootstrap.sh [pfad]"
echo "      Templates aktuell halten:      git copilot-update  (in jedem Repo)"