// Package config handles reading and parsing configuration from config.yml.
package config

import (
	"fmt"
	"os"
	"strings"

	"gitea.futuresens.co.uk/futuresens/hardlink/internal/errorhandlers"
	log "github.com/sirupsen/logrus"
	yaml "gopkg.in/yaml.v3"
)

// ConfigRec holds values from config.yml.
type ConfigRec struct {
	Port            int      `yaml:"port"`
	LockserverURL   string   `yaml:"lockservUrl"`
	LockType        string   `yaml:"lockType"`
	EncoderAddress  string   `yaml:"encoderAddr"`
	Cert            string   `yaml:"cert"`
	DispenserPort   string   `yaml:"dispensPort"`
	DispenserAdrr   string   `yaml:"dispensAddr"`
	PrinterName     string   `yaml:"printerName"`
	LogDir          string   `yaml:"logdir"`
	Dbport          int      `yaml:"dbport"`
	Dbname          string   `yaml:"dbname"`
	Dbuser          string   `yaml:"dbuser"`
	Dbpassword      string   `yaml:"dbpassword"`
	CMSBaseURL      string   `yaml:"cmsurl"`
	IsPayment       bool     `yaml:"isPayment"`
	TestMode        bool     `yaml:"testMode"`
	Hotel           string   `yaml:"hotel"`
	Kiosk           int      `yaml:"kiosk"`
	SendErrorEmails []string `yaml:"senderroremails"`
	PaymentProvider string   `yaml:"paymentProvider"`
	TimeoutSeconds  int      `yaml:"timeoutSeconds"`
}

// ReadHardlinkConfig reads config.yml and applies defaults.
func ReadHardlinkConfig() ConfigRec {
	var cfg ConfigRec
	const configName = "config.yml"
	const defaultPort = 9091
	sep := string(os.PathSeparator)

	data, err := os.ReadFile(configName)
	if err != nil {
		log.Warnf("ReadConfig %s: %v", configName, err)
	} else if err := yaml.Unmarshal(data, &cfg); err != nil {
		log.Warnf("Unmarshal config: %v", err)
	}

	if cfg.Port == 0 {
		cfg.Port = defaultPort
	}

	if cfg.LockType == "" {
		errorhandlers.FatalError(fmt.Errorf("LockType is required in %s", configName))
	}
	cfg.LockType = strings.ToLower(cfg.LockType)

	if cfg.LogDir == "" {
		cfg.LogDir = "./logs" + sep
	} else if !strings.HasSuffix(cfg.LogDir, sep) {
		cfg.LogDir += sep
	}

	if cfg.Dbport <= 0 || cfg.Dbuser == "" || cfg.Dbname == "" || cfg.Dbpassword == "" {
		log.Warnf("Database config (dbport, dbuser, dbname, dbpassword) are required in %s", configName)
	}

	cfg.PaymentProvider = strings.ToLower(strings.TrimSpace(cfg.PaymentProvider))

	if cfg.TimeoutSeconds <= 0 {
		cfg.TimeoutSeconds = 300
	}

	return cfg
}

func ReadPreauthReleaserConfig() ConfigRec {
	var cfg ConfigRec
	const configName = "config.yml"
	sep := string(os.PathSeparator)

	data, err := os.ReadFile(configName)
	if err != nil {
		log.Warnf("ReadConfig %s: %v", configName, err)
	} else if err := yaml.Unmarshal(data, &cfg); err != nil {
		log.Warnf("Unmarshal config: %v", err)
	}

	if cfg.Dbport <= 0 || cfg.Dbuser == "" || cfg.Dbname == "" || cfg.Dbpassword == "" {
		errorhandlers.FatalErrorWithMail(cfg.Hotel, cfg.Kiosk, "PreauthReleaser Database Configuration Error", fmt.Errorf("Database config (dbport, dbuser, dbname, dbpassword) are required in %s", configName))
	}

	if cfg.LogDir == "" {
		cfg.LogDir = "./logs" + sep
	} else if !strings.HasSuffix(cfg.LogDir, sep) {
		cfg.LogDir += sep
	}
	return cfg
}