#!/usr/bin/env fish
# copilot-bootstrap.fish
# Fügt Copilot-Grundkonfiguration zu einem bestehenden oder neu geklonten Repo hinzu.
# Funktions-Parität mit copilot-bootstrap.sh (POSIX-Variante).
#
# Usage:
#   fish copilot-bootstrap.fish                     # aktuelles Verzeichnis
#   fish copilot-bootstrap.fish /path/to/repo       # anderes Verzeichnis
#   fish copilot-bootstrap.fish --with-update-hook  # + post-merge Hook (auto-update nach git pull)

set TEMPLATE_DIR $HOME/.git-templates
set WITH_UPDATE_HOOK 0
set TARGET .

for arg in $argv
    switch $arg
        case --with-update-hook
            set WITH_UPDATE_HOOK 1
        case '-*'
            # andere Flags ignorieren
        case '*'
            set TARGET $arg
    end
end

if not test -d "$TARGET/.git"
    echo "Error: $TARGET is not a git repository" >&2
    exit 1
end

echo "Bootstrapping Copilot config in: $TARGET"

# .github/copilot-instructions.md
if not test -f "$TARGET/.github/copilot-instructions.md"
    mkdir -p "$TARGET/.github"
    cp "$TEMPLATE_DIR/.github/copilot-instructions.md" "$TARGET/.github/copilot-instructions.md"
    echo "  ✓ .github/copilot-instructions.md created (TODO-Felder ausfüllen)"
else
    echo "  ─ .github/copilot-instructions.md already exists, skipping"
end

# .vscode/settings.json
if not test -f "$TARGET/.vscode/settings.json"
    mkdir -p "$TARGET/.vscode"
    cp "$TEMPLATE_DIR/.vscode/settings.json" "$TARGET/.vscode/settings.json"
    echo "  ✓ .vscode/settings.json created"
else
    echo "  ─ .vscode/settings.json already exists, skipping"
end

# .vscode/extensions.json
if not test -f "$TARGET/.vscode/extensions.json"
    mkdir -p "$TARGET/.vscode"
    cp "$TEMPLATE_DIR/.vscode/extensions.json" "$TARGET/.vscode/extensions.json"
    echo "  ✓ .vscode/extensions.json created"
else
    echo "  ─ .vscode/extensions.json already exists, skipping"
end

# ── data/ – Persistente Service-Daten ────────────────────────────────────────
if not test -d "$TARGET/data"
    mkdir -p "$TARGET/data"
    touch "$TARGET/data/.gitkeep"
    echo "  ✓ data/ created (persistente Service-Daten – gitignored)"
else
    echo "  ─ data/ already exists, skipping"
end

# ── history/ – Agent-History und Kontext-Summary ─────────────────────────────
if not test -d "$TARGET/history/prompts"
    mkdir -p "$TARGET/history/prompts"
    echo "  ✓ history/prompts/ created (Agent-Logs – committed)"
end
if not test -f "$TARGET/history/summary/PROJECT_CONTEXT.md"
    mkdir -p "$TARGET/history/summary"
    cp "$TEMPLATE_DIR/history/summary/PROJECT_CONTEXT.md" "$TARGET/history/summary/PROJECT_CONTEXT.md"
    echo "  ✓ history/summary/PROJECT_CONTEXT.md created (Agent-Kontext – committed)"
else
    echo "  ─ history/summary/PROJECT_CONTEXT.md already exists, skipping"
end

# ── docs/ – Zielgruppen-Dokumentation ────────────────────────────────────────
if not test -d "$TARGET/docs"
    mkdir -p "$TARGET/docs"
    cp "$TEMPLATE_DIR/docs/USER.md"       "$TARGET/docs/USER.md"
    cp "$TEMPLATE_DIR/docs/ADMIN.md"      "$TARGET/docs/ADMIN.md"
    cp "$TEMPLATE_DIR/docs/MAINTAINER.md" "$TARGET/docs/MAINTAINER.md"
    echo "  ✓ docs/ created with USER.md, ADMIN.md, MAINTAINER.md (TODO-Felder ausfüllen)"
else
    # Fehlende Zielgruppen-Docs ergänzen ohne vorhandene zu überschreiben
    for doc in USER ADMIN MAINTAINER
        if not test -f "$TARGET/docs/$doc.md"
            cp "$TEMPLATE_DIR/docs/$doc.md" "$TARGET/docs/$doc.md"
            echo "  ✓ docs/$doc.md created"
        else
            echo "  ─ docs/$doc.md already exists, skipping"
        end
    end
end

# ── Git-Hooks – Quality Gate + History ───────────────────────────────────────
mkdir -p "$TARGET/.git/hooks"
if not test -f "$TARGET/.git/hooks/pre-commit"
    cp "$TEMPLATE_DIR/hooks/pre-commit" "$TARGET/.git/hooks/pre-commit"
    chmod +x "$TARGET/.git/hooks/pre-commit"
    echo "  ✓ .git/hooks/pre-commit installed (Quality Gate: Tests + Docs)"
else
    echo "  ─ .git/hooks/pre-commit already exists, skipping"
end
if not test -f "$TARGET/.git/hooks/post-commit"; and test -f "$TEMPLATE_DIR/hooks/post-commit"
    cp "$TEMPLATE_DIR/hooks/post-commit" "$TARGET/.git/hooks/post-commit"
    chmod +x "$TARGET/.git/hooks/post-commit"
    echo "  ✓ .git/hooks/post-commit installed (Auto-History-Log)"
end

# ── post-merge Hook – opt-in: automatisches copilot-update nach git pull ──────
if test "$WITH_UPDATE_HOOK" -eq 1
    if test -f "$TEMPLATE_DIR/hooks/post-merge"
        if not test -f "$TARGET/.git/hooks/post-merge"
            cp "$TEMPLATE_DIR/hooks/post-merge" "$TARGET/.git/hooks/post-merge"
            chmod +x "$TARGET/.git/hooks/post-merge"
            echo "  ✓ .git/hooks/post-merge installed (Copilot-Update nach git pull)"
        else
            echo "  ─ .git/hooks/post-merge already exists, skipping"
        end
    end
end

# ── .gitignore – data/ + Windows-ADS ausschließen ───────────────────────────
set -g GITIGNORE "$TARGET/.gitignore"
set -g GITIGNORE_UPDATED 0

# set -g, damit die Funktion den Zähler im Skript-Scope ändern kann (fish-Scoping)
function _append_gitignore --argument-names pattern comment
    if not grep -qF "$pattern" "$GITIGNORE" 2>/dev/null
        printf '\n%s\n%s\n' "$comment" "$pattern" >> "$GITIGNORE"
        set -g GITIGNORE_UPDATED 1
    end
end

_append_gitignore "data/**/*"         "# Persistente Service-Daten (nie committen!)"
_append_gitignore "!data/.gitkeep"    ""
_append_gitignore "*:Zone.Identifier" "# Windows Mark-of-the-Web / NTFS ADS cruft"

if test "$GITIGNORE_UPDATED" -eq 1
    echo "  ✓ .gitignore aktualisiert (data/ + Windows-ADS excluded)"
else
    echo "  ─ .gitignore already has required entries, skipping"
end

functions -e _append_gitignore

echo ""
echo "Done. Nächste Schritte:"
echo "  1. TODO-Felder ausfüllen:"
echo "     - .github/copilot-instructions.md"
echo "     - history/summary/PROJECT_CONTEXT.md"
echo "     - docs/USER.md, docs/ADMIN.md, docs/MAINTAINER.md"
echo "  2. git add .github .vscode docs history .gitignore"
echo "     git commit -m 'chore: add copilot workspace config'"
echo "  3. Templates aktuell halten: git copilot-update"
echo ""
echo "  Hinweis: Git-Hooks (pre-commit, post-commit) werden NICHT automatisch"
echo "  aktualisiert wenn sie bereits existieren. Neue Hook-Versionen holen mit:"
echo "    git copilot-update"