1 files changed, 129 insertions, 0 deletions
diff --git a/internal/config/config.go b/internal/config/config.go
new file mode 100644
index 0000000..4a86b06
--- /dev/null
+++ b/internal/config/config.go
@@ -0,0 +1,129 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+)
+
+// Config holds all application configuration
+type Config struct {
+	// API Keys
+	TodoistAPIKey   string
+	PlanToEatAPIKey string
+	TrelloAPIKey    string
+	TrelloToken     string
+
+	// Paths
+	ObsidianVaultPath string
+	DatabasePath      string
+
+	// Server
+	Port            string
+	CacheTTLMinutes int
+	Debug           bool
+
+	// AI Agent Access
+	AIAgentAPIKey string
+}
+
+// Load reads configuration from environment variables
+func Load() (*Config, error) {
+	cfg := &Config{
+		// API Keys
+		TodoistAPIKey:   os.Getenv("TODOIST_API_KEY"),
+		PlanToEatAPIKey: os.Getenv("PLANTOEAT_API_KEY"),
+		TrelloAPIKey:    os.Getenv("TRELLO_API_KEY"),
+		TrelloToken:     os.Getenv("TRELLO_TOKEN"),
+
+		// Paths
+		ObsidianVaultPath: os.Getenv("OBSIDIAN_VAULT_PATH"),
+		DatabasePath:      getEnvWithDefault("DATABASE_PATH", "./dashboard.db"),
+
+		// Server
+		Port:            getEnvWithDefault("PORT", "8080"),
+		CacheTTLMinutes: getEnvAsInt("CACHE_TTL_MINUTES", 5),
+		Debug:           getEnvAsBool("DEBUG", false),
+
+		// AI Agent Access
+		AIAgentAPIKey:   os.Getenv("AI_AGENT_API_KEY"),
+	}
+
+	// Validate required fields
+	if err := cfg.Validate(); err != nil {
+		return nil, err
+	}
+
+	return cfg, nil
+}
+
+// Validate checks that required configuration is present
+func (c *Config) Validate() error {
+	// Require both Todoist and Trello (primary task management systems)
+	if c.TodoistAPIKey == "" {
+		return fmt.Errorf("TODOIST_API_KEY is required")
+	}
+
+	if c.TrelloAPIKey == "" {
+		return fmt.Errorf("TRELLO_API_KEY is required")
+	}
+
+	if c.TrelloToken == "" {
+		return fmt.Errorf("TRELLO_TOKEN is required")
+	}
+
+	return nil
+}
+
+// HasPlanToEat checks if PlanToEat is configured
+func (c *Config) HasPlanToEat() bool {
+	return c.PlanToEatAPIKey != ""
+}
+
+// HasTrello checks if Trello is configured
+func (c *Config) HasTrello() bool {
+	return c.TrelloAPIKey != "" && c.TrelloToken != ""
+}
+
+// HasObsidian checks if Obsidian is configured
+func (c *Config) HasObsidian() bool {
+	return c.ObsidianVaultPath != ""
+}
+
+// getEnvWithDefault returns environment variable value or default if not set
+func getEnvWithDefault(key, defaultValue string) string {
+	if value := os.Getenv(key); value != "" {
+		return value
+	}
+	return defaultValue
+}
+
+// getEnvAsInt returns environment variable as int or default if not set or invalid
+func getEnvAsInt(key string, defaultValue int) int {
+	valueStr := os.Getenv(key)
+	if valueStr == "" {
+		return defaultValue
+	}
+
+	value, err := strconv.Atoi(valueStr)
+	if err != nil {
+		return defaultValue
+	}
+
+	return value
+}
+
+// getEnvAsBool returns environment variable as bool or default if not set
+func getEnvAsBool(key string, defaultValue bool) bool {
+	valueStr := os.Getenv(key)
+	if valueStr == "" {
+		return defaultValue
+	}
+
+	value, err := strconv.ParseBool(valueStr)
+	if err != nil {
+		return defaultValue
+	}
+
+	return value
+}