#!/bin/sh
# history clipboard daemon (encrypted with SQLCipher)
# Monitors clipboard changes and logs them to the database

DB_PATH="$HOME/.local/share/history/history.db"
KEY_FILE="$HOME/.local/share/history/.key"
LAST_HASH=""

# Load encryption key
if [ ! -f "$KEY_FILE" ]; then
    echo "Encryption key not found. Run 'history-init' first." >&2
    exit 1
fi
KEY=$(cat "$KEY_FILE")

log_clipboard() {
    local content="$1"
    local hash="$2"

    # Escape single quotes for SQL
    content=$(echo "$content" | sed "s/'/''/g")

    sqlcipher "$DB_PATH" "PRAGMA key = '$KEY'; INSERT OR IGNORE INTO clipboard_history (content, content_type, hash) VALUES ('$content', 'text', '$hash');"
}

# Check for clipnotify, fall back to polling
if command -v clipnotify >/dev/null 2>&1; then
    # Event-driven (more efficient)
    while true; do
        clipnotify

        content=$(xclip -selection clipboard -o 2>/dev/null || echo "")
        [ -z "$content" ] && continue

        hash=$(echo "$content" | md5sum | cut -d' ' -f1)
        [ "$hash" = "$LAST_HASH" ] && continue

        LAST_HASH="$hash"
        log_clipboard "$content" "$hash"
    done
else
    # Polling fallback (check every second)
    while true; do
        content=$(xclip -selection clipboard -o 2>/dev/null || echo "")

        if [ -n "$content" ]; then
            hash=$(echo "$content" | md5sum | cut -d' ' -f1)

            if [ "$hash" != "$LAST_HASH" ]; then
                LAST_HASH="$hash"
                log_clipboard "$content" "$hash"
            fi
        fi

        sleep 1
    done
fi