#!/bin/bash
# ═══════════════════════════════════════════════════════════════
# Alfred Linux v2.0-b5 — Meilisearch Local Search Engine
#
# Installs Meilisearch for offline local search.
# BUILD: v2.0-b5 (Search)
# ═══════════════════════════════════════════════════════════════

set -e

echo "[Alfred Linux v2.0-b5] Installing Meilisearch..."

# ── 1. Download Meilisearch binary ──
MEILI_VER="v1.13.3"
MEILI_URL="https://github.com/meilisearch/meilisearch/releases/download/${MEILI_VER}/meilisearch-linux-amd64"
wget -q "$MEILI_URL" -O /usr/local/bin/meilisearch || {
    echo "[WARN] Meilisearch download failed, trying latest..."
    curl -L https://install.meilisearch.com | sh
    mv meilisearch /usr/local/bin/meilisearch
}
chmod +x /usr/local/bin/meilisearch

# ── 2. Create meilisearch user ──
useradd -r -s /bin/false -d /var/lib/meilisearch meilisearch 2>/dev/null || true
mkdir -p /var/lib/meilisearch
chown meilisearch:meilisearch /var/lib/meilisearch

# ── 3. Systemd service ──
cat > /etc/systemd/system/meilisearch.service << 'SVC'
[Unit]
Description=Meilisearch Local Search Engine
Documentation=https://docs.meilisearch.com
After=network.target

[Service]
ExecStart=/usr/local/bin/meilisearch --db-path /var/lib/meilisearch --http-addr 127.0.0.1:7700 --no-analytics
User=meilisearch
Group=meilisearch
Restart=always
RestartSec=5
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
SVC
systemctl enable meilisearch 2>/dev/null || true

# ── 4. Alfred Search CLI ──
cat > /usr/local/bin/alfred-search << 'SEARCH'
#!/bin/bash
# Alfred Search — local search powered by Meilisearch
# Usage: alfred-search "query"

QUERY="${*:-}"
if [[ -z "$QUERY" ]]; then
    echo "Usage: alfred-search <query>"
    echo "Search local documentation and files."
    exit 1
fi

# Check if Meilisearch is running
if ! curl -s http://localhost:7700/health | grep -q available; then
    echo "Meilisearch is not running. Start with: sudo systemctl start meilisearch"
    exit 1
fi

# Search
RESULT=$(curl -s "http://localhost:7700/multi-search" \
    -H "Content-Type: application/json" \
    -d "{\"queries\": [{\"indexUid\": \"docs\", \"q\": \"$QUERY\", \"limit\": 5}]}" 2>/dev/null)

if echo "$RESULT" | python3 -c "
import sys, json
data = json.load(sys.stdin)
results = data.get('results', [{}])[0].get('hits', [])
if not results:
    print('No results found.')
else:
    for r in results:
        title = r.get('title', r.get('path', 'Untitled'))
        snippet = r.get('content', '')[:200]
        print(f'  → {title}')
        print(f'    {snippet}')
        print()
" 2>/dev/null; then
    :
else
    echo "Search returned no parseable results."
fi
SEARCH
chmod +x /usr/local/bin/alfred-search

# ── 5. First-boot indexer script ──
cat > /usr/local/bin/alfred-index-docs << 'INDEX'
#!/bin/bash
# Index local documentation into Meilisearch
echo "Indexing local documentation..."

# Wait for Meilisearch
for i in {1..30}; do
    curl -s http://localhost:7700/health | grep -q available && break
    sleep 1
done

# Index man pages
DOCS='[]'
ID=0
for f in /usr/share/doc/*/README* /usr/share/doc/*/changelog*; do
    [[ -f "$f" ]] || continue
    CONTENT=$(head -c 5000 "$f" 2>/dev/null | tr -d '\0' | python3 -c "import sys,json; print(json.dumps(sys.stdin.read()))" 2>/dev/null)
    [[ -z "$CONTENT" ]] && continue
    DOCS=$(echo "$DOCS" | python3 -c "
import sys, json
docs = json.load(sys.stdin)
docs.append({'id': $ID, 'path': '$f', 'title': '$(basename "$(dirname "$f")")', 'content': $CONTENT})
print(json.dumps(docs))
" 2>/dev/null)
    ((ID++))
    [[ $ID -ge 500 ]] && break
done

# Push to Meilisearch
echo "$DOCS" | curl -s -X POST "http://localhost:7700/indexes/docs/documents" \
    -H "Content-Type: application/json" \
    -d @- > /dev/null 2>&1

echo "Indexed $ID documents."
INDEX
chmod +x /usr/local/bin/alfred-index-docs

echo "[Alfred Linux v2.0-b5] Meilisearch installed and configured."