feat(config): implement configuration system and contributing guide (#6, #4)

scripts/load-config.sh

@@ -0,0 +1,69 @@
+#!/bin/bash
+# Load configuration from JSON file and export as environment variables
+# Environment variables take precedence over JSON values
+
+set -e
+
+# Default config file location
+CONFIG_FILE="${CONFIG_FILE:-config.json}"
+
+# Color output
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+RED='\033[0;31m'
+NC='\033[0m' # No Color
+
+# Function to safely extract JSON values
+get_json_value() {
+    local file="$1"
+    local key="$2"
+    local default="${3:-}"
+    
+    if [ -f "$file" ]; then
+        value=$(jq -r "$key" "$file" 2>/dev/null || echo "null")
+        if [ "$value" = "null" ] || [ -z "$value" ]; then
+            echo "$default"
+        else
+            echo "$value"
+        fi
+    else
+        echo "$default"
+    fi
+}
+
+# Check if config file exists
+if [ ! -f "$CONFIG_FILE" ]; then
+    echo -e "${YELLOW}Warning: $CONFIG_FILE not found${NC}" >&2
+    echo -e "${YELLOW}Using environment variables only${NC}" >&2
+    echo -e "${YELLOW}Copy config.example.json to config.json and fill in your credentials${NC}" >&2
+    echo "" >&2
+fi
+
+# Check if jq is installed
+if ! command -v jq &> /dev/null; then
+    echo -e "${RED}Error: jq is not installed${NC}" >&2
+    echo -e "${RED}Install it with: sudo apt-get install jq${NC}" >&2
+    exit 1
+fi
+
+# Load configuration values, preferring environment variables
+export NEXTCLOUD_URL="${NEXTCLOUD_URL:-$(get_json_value "$CONFIG_FILE" '.nextcloud.url' '')}"
+export NEXTCLOUD_USER="${NEXTCLOUD_USER:-$(get_json_value "$CONFIG_FILE" '.nextcloud.username' '')}"
+export NEXTCLOUD_PASSWORD="${NEXTCLOUD_PASSWORD:-$(get_json_value "$CONFIG_FILE" '.nextcloud.password' '')}"
+
+# Load settings
+export MAX_RECENT_FOLDERS="${MAX_RECENT_FOLDERS:-$(get_json_value "$CONFIG_FILE" '.settings.maxRecentFolders' '5')}"
+export UPLOAD_CHUNK_SIZE="${UPLOAD_CHUNK_SIZE:-$(get_json_value "$CONFIG_FILE" '.settings.uploadChunkSize' '10485760')}"
+
+# Show what was loaded (without showing password)
+if [ -n "$NEXTCLOUD_URL" ]; then
+    echo -e "${GREEN}✓${NC} NEXTCLOUD_URL: $NEXTCLOUD_URL"
+fi
+if [ -n "$NEXTCLOUD_USER" ]; then
+    echo -e "${GREEN}✓${NC} NEXTCLOUD_USER: $NEXTCLOUD_USER"
+fi
+if [ -n "$NEXTCLOUD_PASSWORD" ]; then
+    echo -e "${GREEN}✓${NC} NEXTCLOUD_PASSWORD: [set]"
+fi
+echo -e "${GREEN}✓${NC} MAX_RECENT_FOLDERS: $MAX_RECENT_FOLDERS"
+echo -e "${GREEN}✓${NC} UPLOAD_CHUNK_SIZE: $UPLOAD_CHUNK_SIZE"