package schema

// LDAPAuthenticationBackendConfiguration represents the configuration related to LDAP server.
type LDAPAuthenticationBackendConfiguration struct {
	Implementation       string     `mapstructure:"implementation"`
	URL                  string     `mapstructure:"url"`
	BaseDN               string     `mapstructure:"base_dn"`
	AdditionalUsersDN    string     `mapstructure:"additional_users_dn"`
	UsersFilter          string     `mapstructure:"users_filter"`
	AdditionalGroupsDN   string     `mapstructure:"additional_groups_dn"`
	GroupsFilter         string     `mapstructure:"groups_filter"`
	GroupNameAttribute   string     `mapstructure:"group_name_attribute"`
	UsernameAttribute    string     `mapstructure:"username_attribute"`
	MailAttribute        string     `mapstructure:"mail_attribute"`
	DisplayNameAttribute string     `mapstructure:"display_name_attribute"`
	User                 string     `mapstructure:"user"`
	Password             string     `mapstructure:"password"`
	StartTLS             bool       `mapstructure:"start_tls"`
	TLS                  *TLSConfig `mapstructure:"tls"`
	SkipVerify           *bool      `mapstructure:"skip_verify"`         // Deprecated: Replaced with LDAPAuthenticationBackendConfiguration.TLS.SkipVerify. TODO: Remove in 4.28.
	MinimumTLSVersion    string     `mapstructure:"minimum_tls_version"` // Deprecated: Replaced with LDAPAuthenticationBackendConfiguration.TLS.MinimumVersion. TODO: Remove in 4.28.
}

// FileAuthenticationBackendConfiguration represents the configuration related to file-based backend.
type FileAuthenticationBackendConfiguration struct {
	Path     string                 `mapstructure:"path"`
	Password *PasswordConfiguration `mapstructure:"password"`
}

// PasswordConfiguration represents the configuration related to password hashing.
type PasswordConfiguration struct {
	Iterations  int    `mapstructure:"iterations"`
	KeyLength   int    `mapstructure:"key_length"`
	SaltLength  int    `mapstructure:"salt_length"`
	Algorithm   string `mapstrucutre:"algorithm"`
	Memory      int    `mapstructure:"memory"`
	Parallelism int    `mapstructure:"parallelism"`
}

// AuthenticationBackendConfiguration represents the configuration related to the authentication backend.
type AuthenticationBackendConfiguration struct {
	DisableResetPassword bool                                    `mapstructure:"disable_reset_password"`
	RefreshInterval      string                                  `mapstructure:"refresh_interval"`
	Ldap                 *LDAPAuthenticationBackendConfiguration `mapstructure:"ldap"`
	File                 *FileAuthenticationBackendConfiguration `mapstructure:"file"`
}

// DefaultPasswordConfiguration represents the default configuration related to Argon2id hashing.
var DefaultPasswordConfiguration = PasswordConfiguration{
	Iterations:  1,
	KeyLength:   32,
	SaltLength:  16,
	Algorithm:   argon2id,
	Memory:      1024,
	Parallelism: 8,
}

// DefaultCIPasswordConfiguration represents the default configuration related to Argon2id hashing for CI.
var DefaultCIPasswordConfiguration = PasswordConfiguration{
	Iterations:  1,
	KeyLength:   32,
	SaltLength:  16,
	Algorithm:   argon2id,
	Memory:      128,
	Parallelism: 8,
}

// DefaultPasswordSHA512Configuration represents the default configuration related to SHA512 hashing.
var DefaultPasswordSHA512Configuration = PasswordConfiguration{
	Iterations: 50000,
	SaltLength: 16,
	Algorithm:  "sha512",
}

// DefaultLDAPAuthenticationBackendConfiguration represents the default LDAP config.
var DefaultLDAPAuthenticationBackendConfiguration = LDAPAuthenticationBackendConfiguration{
	Implementation:       LDAPImplementationCustom,
	UsernameAttribute:    "uid",
	MailAttribute:        "mail",
	DisplayNameAttribute: "displayname",
	GroupNameAttribute:   "cn",
	TLS: &TLSConfig{
		MinimumVersion: "TLS1.2",
	},
}

// DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration represents the default LDAP config for the MSAD Implementation.
var DefaultLDAPAuthenticationBackendImplementationActiveDirectoryConfiguration = LDAPAuthenticationBackendConfiguration{
	UsersFilter:          "(&(|({username_attribute}={input})({mail_attribute}={input}))(objectCategory=person)(objectClass=user)(!userAccountControl:1.2.840.113556.1.4.803:=2)(!pwdLastSet=0))",
	UsernameAttribute:    "sAMAccountName",
	MailAttribute:        "mail",
	DisplayNameAttribute: "displayName",
	GroupsFilter:         "(&(member={dn})(objectClass=group))",
	GroupNameAttribute:   "cn",
}