config

type AppConfig struct {
	Name        string `yaml:"name"`
	Version     string `yaml:"version"`
	Environment string `yaml:"environment"`
}

type Config struct {
	App           AppConfig           `yaml:"app"`
	Log           LogConfig           `yaml:"log"`
	HTTP          HTTPConfig          `yaml:"http"`
	Database      DatabaseConfig      `yaml:"database"`
	Jobs          JobsConfig          `yaml:"jobs"`
	Mail          MailConfig          `yaml:"mail"`
	Observability ObservabilityConfig `yaml:"observability"`
}

type DatabaseConfig struct {
	URL              string        `yaml:"url"`
	MinConns         int32         `yaml:"min_conns"`
	MaxConns         int32         `yaml:"max_conns"`
	ConnectTimeout   time.Duration `yaml:"connect_timeout"`
	MaxConnLifetime  time.Duration `yaml:"max_conn_lifetime"`
	MaxConnIdleTime  time.Duration `yaml:"max_conn_idle_time"`
	HealthCheckEvery time.Duration `yaml:"health_check_period"`
}

type HTTPConfig struct {
	Port                 int           `yaml:"port"`
	APIBasePath          string        `yaml:"api_base_path"`
	MaxRequestBody       int64         `yaml:"max_request_body"`
	ReadHeaderTimeout    time.Duration `yaml:"read_header_timeout"`
	ReadTimeout          time.Duration `yaml:"read_timeout"`
	WriteTimeout         time.Duration `yaml:"write_timeout"`
	IdleTimeout          time.Duration `yaml:"idle_timeout"`
	ShutdownTimeout      time.Duration `yaml:"shutdown_timeout"`
	ReadinessTimeout     time.Duration `yaml:"readiness_timeout"`
	ReadinessConcurrency int           `yaml:"readiness_concurrency"`
	// RequestTransactionWait bounds how long a request waits for a request
	// transaction slot before being shed with 503. Admission is capped by the
	// connection pool, so a brief wait absorbs bursts that would otherwise be
	// rejected. Zero sheds immediately.
	RequestTransactionWait time.Duration `yaml:"request_transaction_wait"`
}

type JobsConfig struct {
	Enabled      bool   `yaml:"enabled"`
	DefaultQueue string `yaml:"default_queue"`
	Workers      int    `yaml:"workers"`
	// Queues adds or overrides independently capped worker pools by queue name.
	// Workers remains the backward-compatible cap for the default and mail queues.
	Queues          map[string]int `yaml:"queues"`
	ShutdownTimeout time.Duration  `yaml:"shutdown_timeout"`
}

type LoadOption func(*loadOptions)

type LogConfig struct {
	Level  string `yaml:"level"`
	Format string `yaml:"format"`
}

type MailConfig struct {
	Transport string     `yaml:"transport"`
	From      string     `yaml:"from"`
	Queue     string     `yaml:"queue"`
	SMTP      SMTPConfig `yaml:"smtp"`
}

type ObservabilityConfig struct {
	Enabled            bool              `yaml:"enabled"`
	OTLPEndpoint       string            `yaml:"otlp_endpoint"`
	OTLPTimeout        time.Duration     `yaml:"otlp_timeout"`
	ResourceAttributes map[string]string `yaml:"resource_attributes"`
}

type SMTPConfig struct {
	Host               string        `yaml:"host"`
	Port               int           `yaml:"port"`
	Username           string        `yaml:"username"`
	Password           string        `yaml:"password"`
	StartTLS           bool          `yaml:"starttls"`
	ImplicitTLS        bool          `yaml:"implicit_tls"`
	InsecureSkipVerify bool          `yaml:"insecure_skip_verify"`
	Timeout            time.Duration `yaml:"timeout"`
}