feat: base go mkiso

internal/config/config.go

@@ -0,0 +1,173 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"time"
+
+	"gopkg.in/yaml.v3"
+)
+
+// Config is the top-level configuration structure.
+type Config struct {
+	Server      ServerConfig      `yaml:"server"`
+	Auth        AuthConfig        `yaml:"auth"`
+	DCMTK       DCMTKConfig       `yaml:"dcmtk"`
+	PACS        PACSConfig        `yaml:"pacs"`
+	OurAE       OurAEConfig       `yaml:"our_ae"`
+	PatientAPI  PatientAPIConfig  `yaml:"patient_api"`
+	CDPublisher CDPublisherConfig `yaml:"cd_publisher"`
+	ISO         ISOConfig         `yaml:"iso"`
+}
+
+type ServerConfig struct {
+	Port         int           `yaml:"port"`
+	ReadTimeout  time.Duration `yaml:"read_timeout"`
+	WriteTimeout time.Duration `yaml:"write_timeout"`
+}
+
+type AuthConfig struct {
+	Enabled bool   `yaml:"enabled"`
+	APIKey  string `yaml:"api_key"`
+}
+
+type DCMTKConfig struct {
+	Storescp string `yaml:"storescp"`
+	Movescu  string `yaml:"movescu"`
+	Storescu string `yaml:"storescu"`
+}
+
+type PACSConfig struct {
+	AETitle string `yaml:"ae_title"`
+	Host    string `yaml:"host"`
+	Port    int    `yaml:"port"`
+}
+
+type OurAEConfig struct {
+	AETitle   string `yaml:"ae_title"`
+	BasePort  int    `yaml:"base_port"`
+	PortRange int    `yaml:"port_range"`
+}
+
+type PatientAPIConfig struct {
+	BaseURL     string        `yaml:"base_url"`
+	Endpoint    string        `yaml:"endpoint"`
+	AuthType    string        `yaml:"auth_type"`
+	AuthHeader  string        `yaml:"auth_header"`
+	AuthToken   string        `yaml:"auth_token"`
+	Timeout     time.Duration `yaml:"timeout"`
+	Retry       int           `yaml:"retry"`
+	RetryBackoff time.Duration `yaml:"retry_backoff"`
+}
+
+type CDPublisherConfig struct {
+	Host string `yaml:"host"`
+	Port int    `yaml:"port"`
+}
+
+type ISOConfig struct {
+	MicrodicomPath string `yaml:"microdicom_path"`
+	TempDir        string `yaml:"temp_dir"`
+}
+
+// Load reads and parses the config file from the given path.
+// If path is empty, it reads from the MKISO_CONFIG env var, falling back
+// to ./config.yaml.
+func Load(path string) (*Config, error) {
+	if path == "" {
+		path = os.Getenv("MKISO_CONFIG")
+	}
+	if path == "" {
+		path = "./config.yaml"
+	}
+
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return nil, fmt.Errorf("read config file %q: %w", path, err)
+	}
+
+	var cfg Config
+	if err := yaml.Unmarshal(data, &cfg); err != nil {
+		return nil, fmt.Errorf("parse config file %q: %w", path, err)
+	}
+
+	if err := cfg.validate(); err != nil {
+		return nil, fmt.Errorf("validate config: %w", err)
+	}
+
+	return &cfg, nil
+}
+
+func (c *Config) validate() error {
+	if c.Server.Port == 0 {
+		c.Server.Port = 8080
+	}
+	if c.Server.ReadTimeout == 0 {
+		c.Server.ReadTimeout = 300 * time.Second
+	}
+	if c.Server.WriteTimeout == 0 {
+		c.Server.WriteTimeout = 600 * time.Second
+	}
+
+	if c.DCMTK.Storescp == "" {
+		return fmt.Errorf("dcmtk.storescp is required")
+	}
+	if c.DCMTK.Movescu == "" {
+		return fmt.Errorf("dcmtk.movescu is required")
+	}
+	if c.DCMTK.Storescu == "" {
+		return fmt.Errorf("dcmtk.storescu is required")
+	}
+
+	if c.PACS.Host == "" {
+		c.PACS.Host = "localhost"
+	}
+	if c.PACS.Port == 0 {
+		c.PACS.Port = 11112
+	}
+	if c.PACS.AETitle == "" {
+		c.PACS.AETitle = "ABPACS"
+	}
+
+	if c.OurAE.AETitle == "" {
+		c.OurAE.AETitle = "CDRECORD"
+	}
+	if c.OurAE.BasePort == 0 {
+		c.OurAE.BasePort = 10104
+	}
+	if c.OurAE.PortRange == 0 {
+		c.OurAE.PortRange = 100
+	}
+
+	if c.PatientAPI.BaseURL == "" {
+		c.PatientAPI.BaseURL = "http://localhost:8090"
+	}
+	if c.PatientAPI.Endpoint == "" {
+		c.PatientAPI.Endpoint = "/patient/by-accession"
+	}
+	if c.PatientAPI.Timeout == 0 {
+		c.PatientAPI.Timeout = 10 * time.Second
+	}
+	if c.PatientAPI.Retry == 0 {
+		c.PatientAPI.Retry = 3
+	}
+	if c.PatientAPI.RetryBackoff == 0 {
+		c.PatientAPI.RetryBackoff = 500 * time.Millisecond
+	}
+
+	if c.CDPublisher.Host == "" {
+		c.CDPublisher.Host = "172.16.0.120"
+	}
+	if c.CDPublisher.Port == 0 {
+		c.CDPublisher.Port = 104
+	}
+
+	if c.ISO.MicrodicomPath == "" {
+		c.ISO.MicrodicomPath = "/var/www/html/microdicom"
+	}
+	if c.ISO.TempDir == "" {
+		c.ISO.TempDir = "/tmp"
+	}
+
+	return nil
+}