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const ObservableStore = require('obs-store')
const extend = require('xtend')
class AddressBookController {
// Controller in charge of managing the address book functionality from the
// recipients field on the send screen. Manages a history of all saved
// addresses and all currently owned addresses.
constructor (opts = {}, keyringController) {
const initState = extend({
addressBook: [],
}, opts.initState)
this.store = new ObservableStore(initState)
this.keyringController = keyringController
}
//
// PUBLIC METHODS
//
// Sets a new address book in store by accepting a new address and nickname.
setAddressBook (address, name) {
return this._addToAddressBook(address, name)
.then((addressBook) => {
this.store.updateState({
addressBook,
})
return Promise.resolve()
})
}
//
// PRIVATE METHODS
//
// Performs the logic to add the address and name into the address book. The
// pushed object is an object of two fields. Current behavior does not set an
// upper limit to the number of addresses.
_addToAddressBook (address, name) {
let addressBook = this._getAddressBook()
let identities = this._getIdentities()
let addressBookIndex = addressBook.findIndex((element) => { return element.address.toLowerCase() === address.toLowerCase() || element.name === name })
let identitiesIndex = Object.keys(identities).findIndex((element) => { return element.toLowerCase() === address.toLowerCase() })
// trigger this condition if we own this address--no need to overwrite.
if (identitiesIndex !== -1) {
return Promise.resolve(addressBook)
// trigger this condition if we've seen this address before--may need to update nickname.
} else if (addressBookIndex !== -1) {
addressBook.splice(addressBookIndex, 1)
} else if (addressBook.length > 15) {
addressBook.shift()
}
addressBook.push({
address: address,
name,
})
return Promise.resolve(addressBook)
}
// Internal method to get the address book. Current persistence behavior
// should not require that this method be called from the UI directly.
_getAddressBook () {
return this.store.getState().addressBook
}
// Retrieves identities from the keyring controller in order to avoid
// duplication
_getIdentities () {
return this.keyringController.memStore.getState().identities
}
}
module.exports = AddressBookController
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