// Environment file for getting variables
// Currently the only thing it does is set the master password
// Should probably have it take over functions from OS such as port and mongodb connection details
// Reads from the config/environments/dev.yaml file by default
package config

import (
	"fmt"
	"os"
	"time"

	"gopkg.in/yaml.v3"
)

// setting dev by default
func getEnv() string {
	env := os.Getenv("NETMAKER_ENV")
	if len(env) == 0 {
		return "dev"
	}
	return env
}

// Config : application config stored as global variable
var Config *EnvironmentConfig = &EnvironmentConfig{}
var SetupErr error

// EnvironmentConfig - environment conf struct
type EnvironmentConfig struct {
	Server ServerConfig `yaml:"server"`
	SQL    SQLConfig    `yaml:"sql"`
}

// ServerConfig - server conf struct
type ServerConfig struct {
	CoreDNSAddr                string        `yaml:"corednsaddr"`
	APIConnString              string        `yaml:"apiconn"`
	APIHost                    string        `yaml:"apihost"`
	APIPort                    string        `yaml:"apiport"`
	Broker                     string        `yam:"broker"`
	ServerBrokerEndpoint       string        `yaml:"serverbrokerendpoint"`
	BrokerType                 string        `yaml:"brokertype"`
	EmqxRestEndpoint           string        `yaml:"emqxrestendpoint"`
	NetclientAutoUpdate        string        `yaml:"netclientautoupdate"`
	NetclientEndpointDetection string        `yaml:"netclientendpointdetection"`
	MasterKey                  string        `yaml:"masterkey"`
	DNSKey                     string        `yaml:"dnskey"`
	AllowedOrigin              string        `yaml:"allowedorigin"`
	NodeID                     string        `yaml:"nodeid"`
	RestBackend                string        `yaml:"restbackend"`
	MessageQueueBackend        string        `yaml:"messagequeuebackend"`
	DNSMode                    string        `yaml:"dnsmode"`
	DisableRemoteIPCheck       string        `yaml:"disableremoteipcheck"`
	Version                    string        `yaml:"version"`
	SQLConn                    string        `yaml:"sqlconn"`
	Platform                   string        `yaml:"platform"`
	Database                   string        `yaml:"database"`
	Verbosity                  int32         `yaml:"verbosity"`
	AuthProvider               string        `yaml:"authprovider"`
	OIDCIssuer                 string        `yaml:"oidcissuer"`
	ClientID                   string        `yaml:"clientid"`
	ClientSecret               string        `yaml:"clientsecret"`
	FrontendURL                string        `yaml:"frontendurl"`
	DisplayKeys                string        `yaml:"displaykeys"`
	AzureTenant                string        `yaml:"azuretenant"`
	Telemetry                  string        `yaml:"telemetry"`
	HostNetwork                string        `yaml:"hostnetwork"`
	Server                     string        `yaml:"server"`
	PublicIPService            string        `yaml:"publicipservice"`
	MQPassword                 string        `yaml:"mqpassword"`
	MQUserName                 string        `yaml:"mqusername"`
	MetricsExporter            string        `yaml:"metrics_exporter"`
	BasicAuth                  string        `yaml:"basic_auth"`
	LicenseValue               string        `yaml:"license_value"`
	NetmakerTenantID           string        `yaml:"netmaker_tenant_id"`
	IsPro                      string        `yaml:"is_ee" json:"IsEE"`
	StunPort                   int           `yaml:"stun_port"`
	StunList                   string        `yaml:"stun_list"`
	TurnServer                 string        `yaml:"turn_server"`
	TurnApiServer              string        `yaml:"turn_api_server"`
	TurnPort                   int           `yaml:"turn_port"`
	TurnUserName               string        `yaml:"turn_username"`
	TurnPassword               string        `yaml:"turn_password"`
	UseTurn                    bool          `yaml:"use_turn"`
	UsersLimit                 int           `yaml:"user_limit"`
	NetworksLimit              int           `yaml:"network_limit"`
	MachinesLimit              int           `yaml:"machines_limit"`
	IngressesLimit             int           `yaml:"ingresses_limit"`
	EgressesLimit              int           `yaml:"egresses_limit"`
	DeployedByOperator         bool          `yaml:"deployed_by_operator"`
	Environment                string        `yaml:"environment"`
	JwtValidityDuration        time.Duration `yaml:"jwt_validity_duration"`
	RacAutoDisable             bool          `yaml:"rac_auto_disable"`
	CacheEnabled               string        `yaml:"caching_enabled"`
	EndpointDetection          bool          `json:"endpoint_detection"`
	AllowedEmailDomains        string        `yaml:"allowed_email_domains"`
	EmailSenderAddr            string        `json:"email_sender_addr"`
	EmailSenderUser            string        `json:"email_sender_user"`
	EmailSenderPassword        string        `json:"email_sender_password"`
	SmtpHost                   string        `json:"smtp_host"`
	SmtpPort                   int           `json:"smtp_port"`
	MetricInterval             string        `yaml:"metric_interval"`
}

// SQLConfig - Generic SQL Config
type SQLConfig struct {
	Host     string `yaml:"host"`
	Port     int32  `yaml:"port"`
	Username string `yaml:"username"`
	Password string `yaml:"password"`
	DB       string `yaml:"db"`
	SSLMode  string `yaml:"sslmode"`
}

// reading in the env file
func ReadConfig(absolutePath string) (*EnvironmentConfig, error) {
	if len(absolutePath) == 0 {
		absolutePath = fmt.Sprintf("environments/%s.yaml", getEnv())
	}
	f, err := os.Open(absolutePath)
	var cfg EnvironmentConfig
	if err != nil {
		return &cfg, err
	}
	defer f.Close()

	decoder := yaml.NewDecoder(f)
	if decoder.Decode(&cfg) != nil {
		return &cfg, err
	}
	return &cfg, err
}