#!/usr/bin/env fish
# copilot-update.fish
# Zieht die neueste Version des Copilot-Setup-Repos und aktualisiert:
#   - Dieses Script selbst (~/.local/bin/copilot-update.fish)
#   - Globale Git-Templates (~/.git-templates/)
#   - VS Code Prompt-Dateien
#   - Git-Hooks im aktuellen Repo (pre-commit)
#   - .github/copilot-instructions.md (Framework-Sektion immer, Projekt-Teil bleibt)
#
# Usage:
#   fish ~/.local/bin/copilot-update.fish
#   git copilot-update   (via Alias, ruft copilot-update.sh auf)

set SETUP_REPO_SSH "ssh://git@192.168.178.6:2222/cschulz/rd13_copilot_setup.git"
set SETUP_REPO_HTTP "http://192.168.178.6:8083/cschulz/rd13_copilot_setup.git"

if set -q COPILOT_SETUP_DIR
    set CACHE_DIR $COPILOT_SETUP_DIR
else
    set CACHE_DIR $HOME/.copilot-setup
end

echo "=== Copilot Update ==="

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

if not test -d $CACHE_DIR/.git
    echo "  → Klone Setup-Repo (SSH)..."
    if git clone --quiet $SETUP_REPO_SSH $CACHE_DIR 2>/dev/null
        echo "  ✓ Geklont via SSH"
    else
        echo "  ✗ SSH fehlgeschlagen – versuche HTTP-Fallback..."
        if git clone --quiet $SETUP_REPO_HTTP $CACHE_DIR 2>/dev/null
            echo "  ✓ Geklont via HTTP"
        else
            echo ""
            echo "  ✗ FEHLER: Setup-Repo nicht erreichbar."
            echo "    SSH:  $SETUP_REPO_SSH"
            echo "    HTTP: $SETUP_REPO_HTTP"
            exit 1
        end
    end
end

set SOURCE $CACHE_DIR

# ── 1b. Self-update ──────────────────────────────────────────────────────
set SELF $HOME/.local/bin/copilot-update.fish
if test -f $SOURCE/scripts/copilot-update.fish
    if not diff -q $SOURCE/scripts/copilot-update.fish $SELF >/dev/null 2>&1
        cp $SOURCE/scripts/copilot-update.fish $SELF
        chmod +x $SELF
        echo "  ✓ copilot-update.fish selbst aktualisiert – starte neue Version..."
        exec fish $SELF $argv
    end
end ────────────────────────────────────
set 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/
chmod +x $GIT_TEMPLATE_DIR/hooks/pre-commit
if test -f $SOURCE/git-templates/hooks/post-merge
    cp $SOURCE/git-templates/hooks/post-merge $GIT_TEMPLATE_DIR/hooks/
    chmod +x $GIT_TEMPLATE_DIR/hooks/post-merge
end
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 test -d $HOME/.vscode-server/data/User
    set VSCODE_USER $HOME/.vscode-server/data/User
else if test -d "$HOME/Library/Application Support/Code/User"
    set VSCODE_USER "$HOME/Library/Application Support/Code/User"
else
    set VSCODE_USER $HOME/.config/Code/User
end

if test -d $VSCODE_USER
    mkdir -p $VSCODE_USER/prompts
    set PROMPTS_UPDATED 0
    for f in $SOURCE/prompts/*.prompt.md
        set fname (basename $f)
        cp $f $VSCODE_USER/prompts/$fname
        set PROMPTS_UPDATED (math $PROMPTS_UPDATED + 1)
    end
    echo "  ✓ $PROMPTS_UPDATED Prompt-Dateien aktualisiert → $VSCODE_USER/prompts/"
else
    echo "  ─ VS Code User-Verzeichnis nicht gefunden, Prompts übersprungen"
end

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

if test -z "$REPO_ROOT"
    echo ""
    echo "  ─ Kein Git-Repo erkannt – repo-lokale Updates übersprungen"
    echo ""
    echo "=== Done ==="
    exit 0
end

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

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

for hook in pre-commit
    if test -f $SOURCE/git-templates/hooks/$hook
        cp $SOURCE/git-templates/hooks/$hook $HOOKS_DIR/$hook
        chmod +x $HOOKS_DIR/$hook
        set HOOKS_UPDATED (math $HOOKS_UPDATED + 1)
        echo "  ✓ .git/hooks/$hook aktualisiert"
    end
end

if test $HOOKS_UPDATED -eq 0
    echo "  ─ Keine Hook-Templates gefunden"
end

# ── 4b. copilot-instructions.md: Framework-Sektion immer aktualisieren ─────────
set COPILOT_INSTRUCTIONS $REPO_ROOT/.github/copilot-instructions.md
set TEMPLATE_INSTRUCTIONS $SOURCE/git-templates/.github/copilot-instructions.md

if test -f $COPILOT_INSTRUCTIONS; and test -f $TEMPLATE_INSTRUCTIONS
    set framework (awk '/^---$/{exit} {print}' $TEMPLATE_INSTRUCTIONS)
    set project (awk '/^---$/{found=1} found{print}' $COPILOT_INSTRUCTIONS)
    if test -n "$project"
        printf '%s\n%s\n' (string join \n $framework) (string join \n $project) > $COPILOT_INSTRUCTIONS
        echo "  ✓ .github/copilot-instructions.md Framework-Sektion aktualisiert"
    else
        cp $TEMPLATE_INSTRUCTIONS $COPILOT_INSTRUCTIONS
        echo "  ✓ .github/copilot-instructions.md aktualisiert (noch nicht angepasst)"
    end
else
    echo "  ─ .github/copilot-instructions.md nicht vorhanden, übersprungen"
end

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