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contact.go
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contact.go
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package flows
import (
"encoding/json"
"time"
"github.com/nyaruka/gocommon/urns"
"github.com/nyaruka/goflow/contactql"
"github.com/nyaruka/goflow/excellent/types"
"github.com/nyaruka/goflow/utils"
)
// Contact represents a person who is interacting with the flow. It renders as the person's name
// (or perferred URN if name isn't set) in a template, and has the following properties which can be accessed:
//
// * `uuid` the UUID of the contact
// * `name` the full name of the contact
// * `first_name` the first name of the contact
// * `language` the [ISO-639-3](http://www-01.sil.org/iso639-3/) language code of the contact
// * `urns` all [URNs](#context:urn) the contact has set
// * `urns.[scheme]` all the [URNs](#context:urn) the contact has set for the particular URN scheme
// * `urn` shorthand for `@(format_urn(c.urns.0))`, i.e. the contact's preferred [URN](#context:urn) in friendly formatting
// * `groups` all the [groups](#context:group) that the contact belongs to
// * `fields` all the custom contact fields the contact has set
// * `fields.[snaked_field_name]` the value of the specific field
// * `channel` shorthand for `contact.urns.0.channel`, i.e. the [channel](#context:channel) of the contact's preferred URN
//
// Examples:
//
// @contact -> Ryan Lewis
// @contact.name -> Ryan Lewis
// @contact.first_name -> Ryan
// @contact.language -> eng
// @contact.urns -> ["tel:+12065551212","twitterid:54784326227#nyaruka","mailto:foo@bar.com"]
// @contact.urns.0 -> tel:+12065551212
// @contact.urns.tel -> ["tel:+12065551212"]
// @contact.urns.mailto.0 -> mailto:foo@bar.com
// @contact.urn -> (206) 555-1212
// @contact.groups -> ["Testers","Males"]
// @contact.fields -> {"activation_token":"AACC55","age":"23","gender":"Male","join_date":"2017-12-02T00:00:00.000000-02:00"}
// @contact.fields.activation_token -> AACC55
// @contact.fields.gender -> Male
//
// @context contact
type Contact struct {
uuid ContactUUID
name string
language utils.Language
timezone *time.Location
urns URNList
groups *GroupList
fields FieldValues
}
// NewContact returns a new contact
func NewContact(name string, language utils.Language, timezone *time.Location) *Contact {
return &Contact{
uuid: ContactUUID(utils.NewUUID()),
name: name,
language: language,
timezone: timezone,
groups: NewGroupList([]*Group{}),
}
}
// Clone creates a copy of this contact
func (c *Contact) Clone() *Contact {
if c == nil {
return nil
}
return &Contact{
uuid: c.uuid,
name: c.name,
language: c.language,
timezone: c.timezone,
urns: c.urns.clone(),
groups: c.groups.clone(),
fields: c.fields.clone(),
}
}
// UUID returns the UUID of this contact
func (c *Contact) UUID() ContactUUID { return c.uuid }
// SetLanguage sets the language for this contact
func (c *Contact) SetLanguage(lang utils.Language) { c.language = lang }
// Language gets the language for this contact
func (c *Contact) Language() utils.Language { return c.language }
// SetTimezone sets the timezone of this contact
func (c *Contact) SetTimezone(tz *time.Location) {
c.timezone = tz
}
// Timezone returns the timezone of this contact
func (c *Contact) Timezone() *time.Location { return c.timezone }
// SetName sets the name of this contact
func (c *Contact) SetName(name string) { c.name = name }
// Name returns the name of this contact
func (c *Contact) Name() string { return c.name }
// URNs returns the URNs of this contact
func (c *Contact) URNs() URNList { return c.urns }
// AddURN adds a new URN to this contact
func (c *Contact) AddURN(urn urns.URN) bool {
if c.HasURN(urn) {
return false
}
c.urns = append(c.urns, &ContactURN{URN: urn.Normalize("")})
return true
}
// HasURN checks whether the contact has the given URN
func (c *Contact) HasURN(urn urns.URN) bool {
urn = urn.Normalize("")
for _, u := range c.urns {
if u.URN == urn {
return true
}
}
return false
}
// Groups returns the groups that this contact belongs to
func (c *Contact) Groups() *GroupList { return c.groups }
// Fields returns this contact's field values
func (c *Contact) Fields() FieldValues { return c.fields }
// Reference returns a reference to this contact
func (c *Contact) Reference() *ContactReference { return NewContactReference(c.uuid, c.name) }
// Resolve resolves the given key when this contact is referenced in an expression
func (c *Contact) Resolve(key string) types.XValue {
switch key {
case "uuid":
return types.NewXText(string(c.uuid))
case "name":
return types.NewXText(c.name)
case "first_name":
names := utils.TokenizeString(c.name)
if len(names) >= 1 {
return types.NewXText(names[0])
}
return nil
case "language":
return types.NewXText(string(c.language))
case "timezone":
if c.timezone != nil {
return types.NewXText(c.timezone.String())
}
return nil
case "urns":
return c.urns
case "urn":
if len(c.urns) > 0 {
return types.NewXText(c.urns[0].Format())
}
return nil
case "groups":
return c.groups
case "fields":
return c.fields
case "channel":
if len(c.urns) > 0 {
return c.urns[0].Channel()
}
return nil
}
return types.NewXResolveError(c, key)
}
// Describe returns a representation of this type for error messages
func (c *Contact) Describe() string { return "contact" }
// Reduce is called when this object needs to be reduced to a primitive
func (c *Contact) Reduce() types.XPrimitive {
return types.NewXText(c.name)
}
// ToXJSON is called when this type is passed to @(json(...))
func (c *Contact) ToXJSON() types.XText {
return types.ResolveKeys(c, "uuid", "name", "language", "timezone", "urns", "groups", "fields", "channel").ToXJSON()
}
var _ types.XValue = (*Contact)(nil)
var _ types.XResolvable = (*Contact)(nil)
// SetFieldValue updates the given contact field value for this contact
func (c *Contact) SetFieldValue(env utils.Environment, fieldSet *FieldSet, key string, rawValue string) {
runEnv := env.(RunEnvironment)
c.fields.setValue(runEnv, fieldSet, key, rawValue)
}
// UpdatePreferredChannel updates the preferred channel
func (c *Contact) UpdatePreferredChannel(channel Channel) {
priorityURNs := make([]*ContactURN, 0)
otherURNs := make([]*ContactURN, 0)
for _, urn := range c.urns {
// tel URNs can be re-assigned, other URN schemes are considered channel specific
if urn.URN.Scheme() == urns.TelScheme && channel.SupportsScheme(urns.TelScheme) {
urn.SetChannel(channel)
}
// move any URNs with this channel to the front of the list
if urn.Channel() == channel {
priorityURNs = append(priorityURNs, urn)
} else {
otherURNs = append(otherURNs, urn)
}
}
c.urns = append(priorityURNs, otherURNs...)
}
// ReevaluateDynamicGroups reevaluates membership of all dynamic groups for this contact
func (c *Contact) ReevaluateDynamicGroups(session Session) error {
groups, err := session.Assets().GetGroupSet()
if err != nil {
return err
}
for _, group := range groups.All() {
if group.IsDynamic() {
qualifies, err := group.CheckDynamicMembership(session, c)
if err != nil {
return err
}
if qualifies {
c.groups.Add(group)
} else {
c.groups.Remove(group)
}
}
}
return nil
}
// ResolveQueryKey resolves a contact query search key for this contact
func (c *Contact) ResolveQueryKey(key string) []interface{} {
// try as a URN scheme
if urns.IsValidScheme(key) {
urnsWithScheme := c.urns.WithScheme(key)
vals := make([]interface{}, len(urnsWithScheme))
for u := range urnsWithScheme {
vals[u] = string(urnsWithScheme[u].URN)
}
return vals
}
// try as a contact field
for k, value := range c.fields {
if key == string(k) {
fieldValue := value.TypedValue()
var nativeValue interface{}
switch typed := fieldValue.(type) {
case nil:
return nil
case LocationPath:
nativeValue = typed.Name()
case types.XText:
nativeValue = typed.Native()
case types.XNumber:
nativeValue = typed.Native()
case types.XDateTime:
nativeValue = typed.Native()
}
return []interface{}{nativeValue}
}
}
return nil
}
var _ contactql.Queryable = (*Contact)(nil)
//------------------------------------------------------------------------------------------
// JSON Encoding / Decoding
//------------------------------------------------------------------------------------------
type fieldValueEnvelope struct {
Text types.XText `json:"text"`
Datetime *types.XDateTime `json:"datetime,omitempty"`
Number *types.XNumber `json:"number,omitempty"`
State LocationPath `json:"state,omitempty"`
District LocationPath `json:"district,omitempty"`
Ward LocationPath `json:"ward,omitempty"`
}
type contactEnvelope struct {
UUID ContactUUID `json:"uuid" validate:"required,uuid4"`
Name string `json:"name"`
Language utils.Language `json:"language"`
Timezone string `json:"timezone"`
URNs []urns.URN `json:"urns" validate:"dive,urn"`
Groups []*GroupReference `json:"groups,omitempty" validate:"dive"`
Fields map[string]*fieldValueEnvelope `json:"fields,omitempty"`
}
// ReadContact decodes a contact from the passed in JSON
func ReadContact(session Session, data json.RawMessage) (*Contact, error) {
var envelope contactEnvelope
var err error
if err := utils.UnmarshalAndValidate(data, &envelope, "contact"); err != nil {
return nil, err
}
c := &Contact{}
c.uuid = envelope.UUID
c.name = envelope.Name
c.language = envelope.Language
if envelope.Timezone != "" {
if c.timezone, err = time.LoadLocation(envelope.Timezone); err != nil {
return nil, err
}
}
if envelope.URNs == nil {
c.urns = make(URNList, 0)
} else {
if c.urns, err = ReadURNList(session, envelope.URNs); err != nil {
return nil, err
}
}
if envelope.Groups == nil {
c.groups = NewGroupList([]*Group{})
} else {
groups := make([]*Group, len(envelope.Groups))
for g := range envelope.Groups {
if groups[g], err = session.Assets().GetGroup(envelope.Groups[g].UUID); err != nil {
return nil, err
}
}
c.groups = NewGroupList(groups)
}
fieldSet, err := session.Assets().GetFieldSet()
if err != nil {
return nil, err
}
c.fields = make(FieldValues, len(fieldSet.All()))
for _, field := range fieldSet.All() {
value := NewEmptyFieldValue(field)
if envelope.Fields != nil {
valueEnvelope := envelope.Fields[field.key]
if valueEnvelope != nil {
value.text = valueEnvelope.Text
value.number = valueEnvelope.Number
value.datetime = valueEnvelope.Datetime
value.state = valueEnvelope.State
value.district = valueEnvelope.District
value.ward = valueEnvelope.Ward
}
}
c.fields[field.key] = value
}
return c, nil
}
// MarshalJSON marshals this contact into JSON
func (c *Contact) MarshalJSON() ([]byte, error) {
var ce contactEnvelope
ce.Name = c.name
ce.UUID = c.uuid
ce.Language = c.language
ce.URNs = c.urns.RawURNs(true)
if c.timezone != nil {
ce.Timezone = c.timezone.String()
}
ce.Groups = make([]*GroupReference, c.groups.Count())
for g, group := range c.groups.All() {
ce.Groups[g] = group.Reference()
}
ce.Fields = make(map[string]*fieldValueEnvelope)
for _, v := range c.fields {
if !v.IsEmpty() {
ce.Fields[v.field.Key()] = &fieldValueEnvelope{
Text: v.text,
Number: v.number,
Datetime: v.datetime,
State: v.state,
District: v.district,
Ward: v.ward,
}
}
}
return json.Marshal(ce)
}