Merge pull request #4884 from MetaMask/TokensPerAccountBasis

Tokens per account & network basis

9 files changed, 287 insertions, 37 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5aaa54485..ea5d90500 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## Current Master
 
+- [#4884](https://github.com/MetaMask/metamask-extension/pull/4884): Allow to have tokens per account and network.
+
 ## 4.9.0 Tue Aug 07 2018
 
 - Add new tokens auto detection
diff --git a/app/scripts/controllers/detect-tokens.js b/app/scripts/controllers/detect-tokens.js
index 195ec918a..62e639795 100644
--- a/app/scripts/controllers/detect-tokens.js
+++ b/app/scripts/controllers/detect-tokens.js
@@ -85,7 +85,7 @@ class DetectTokensController {
   set preferences (preferences) {
     if (!preferences) { return }
     this._preferences = preferences
-    preferences.store.subscribe(({ tokens }) => { this.tokenAddresses = tokens.map((obj) => { return obj.address }) })
+    preferences.store.subscribe(({ tokens = [] }) => { this.tokenAddresses = tokens.map((obj) => { return obj.address }) })
     preferences.store.subscribe(({ selectedAddress }) => {
       if (this.selectedAddress !== selectedAddress) {
         this.selectedAddress = selectedAddress
diff --git a/app/scripts/controllers/preferences.js b/app/scripts/controllers/preferences.js
index f6250dc16..707fd7de9 100644
--- a/app/scripts/controllers/preferences.js
+++ b/app/scripts/controllers/preferences.js
@@ -13,6 +13,7 @@ class PreferencesController {
 	 * @property {array} store.frequentRpcList A list of custom rpcs to provide the user
    * @property {string} store.currentAccountTab Indicates the selected tab in the ui
    * @property {array} store.tokens The tokens the user wants display in their token lists
+   * @property {object} store.accountTokens The tokens stored per account and then per network type
    * @property {boolean} store.useBlockie The users preference for blockie identicons within the UI
    * @property {object} store.featureFlags A key-boolean map, where keys refer to features and booleans to whether the
    * user wishes to see that feature
@@ -24,6 +25,7 @@ class PreferencesController {
     const initState = extend({
       frequentRpcList: [],
       currentAccountTab: 'history',
+      accountTokens: {},
       tokens: [],
       useBlockie: false,
       featureFlags: {},
@@ -33,8 +35,9 @@ class PreferencesController {
     }, opts.initState)
 
     this.diagnostics = opts.diagnostics
-
+    this.network = opts.network
     this.store = new ObservableStore(initState)
+    this._subscribeProviderType()
   }
 // PUBLIC METHODS
 
@@ -77,12 +80,19 @@ class PreferencesController {
    */
   setAddresses (addresses) {
     const oldIdentities = this.store.getState().identities
+    const oldAccountTokens = this.store.getState().accountTokens
+
     const identities = addresses.reduce((ids, address, index) => {
       const oldId = oldIdentities[address] || {}
       ids[address] = {name: `Account ${index + 1}`, address, ...oldId}
       return ids
     }, {})
-    this.store.updateState({ identities })
+    const accountTokens = addresses.reduce((tokens, address) => {
+      const oldTokens = oldAccountTokens[address] || {}
+      tokens[address] = oldTokens
+      return tokens
+    }, {})
+    this.store.updateState({ identities, accountTokens })
   }
 
   /**
@@ -93,11 +103,13 @@ class PreferencesController {
    */
   removeAddress (address) {
     const identities = this.store.getState().identities
+    const accountTokens = this.store.getState().accountTokens
     if (!identities[address]) {
       throw new Error(`${address} can't be deleted cause it was not found`)
     }
     delete identities[address]
-    this.store.updateState({ identities })
+    delete accountTokens[address]
+    this.store.updateState({ identities, accountTokens })
 
     // If the selected account is no longer valid,
     // select an arbitrary other account:
@@ -117,14 +129,17 @@ class PreferencesController {
    */
   addAddresses (addresses) {
     const identities = this.store.getState().identities
+    const accountTokens = this.store.getState().accountTokens
     addresses.forEach((address) => {
       // skip if already exists
       if (identities[address]) return
       // add missing identity
       const identityCount = Object.keys(identities).length
+
+      accountTokens[address] = {}
       identities[address] = { name: `Account ${identityCount + 1}`, address }
     })
-    this.store.updateState({ identities })
+    this.store.updateState({ identities, accountTokens })
   }
 
   /*
@@ -175,15 +190,15 @@ class PreferencesController {
    * Setter for the `selectedAddress` property
    *
    * @param {string} _address A new hex address for an account
-   * @returns {Promise<void>} Promise resolves with undefined
+   * @returns {Promise<void>} Promise resolves with tokens
    *
    */
   setSelectedAddress (_address) {
-    return new Promise((resolve, reject) => {
-      const address = normalizeAddress(_address)
-      this.store.updateState({ selectedAddress: address })
-      resolve()
-    })
+    const address = normalizeAddress(_address)
+    this._updateTokens(address)
+    this.store.updateState({ selectedAddress: address })
+    const tokens = this.store.getState().tokens
+    return Promise.resolve(tokens)
   }
 
   /**
@@ -232,9 +247,7 @@ class PreferencesController {
     } else {
       tokens.push(newEntry)
     }
-
-    this.store.updateState({ tokens })
-
+    this._updateAccountTokens(tokens)
     return Promise.resolve(tokens)
   }
 
@@ -247,10 +260,8 @@ class PreferencesController {
    */
   removeToken (rawAddress) {
     const tokens = this.store.getState().tokens
-
     const updatedTokens = tokens.filter(token => token.address !== rawAddress)
-
-    this.store.updateState({ tokens: updatedTokens })
+    this._updateAccountTokens(updatedTokens)
     return Promise.resolve(updatedTokens)
   }
 
@@ -376,6 +387,57 @@ class PreferencesController {
   //
   // PRIVATE METHODS
   //
+  /**
+   * Subscription to network provider type.
+   *
+   *
+   */
+  _subscribeProviderType () {
+    this.network.providerStore.subscribe(() => {
+      const { tokens } = this._getTokenRelatedStates()
+      this.store.updateState({ tokens })
+    })
+  }
+
+  /**
+   * Updates `accountTokens` and `tokens` of current account and network according to it.
+   *
+   * @param {array} tokens Array of tokens to be updated.
+   *
+   */
+  _updateAccountTokens (tokens) {
+    const { accountTokens, providerType, selectedAddress } = this._getTokenRelatedStates()
+    accountTokens[selectedAddress][providerType] = tokens
+    this.store.updateState({ accountTokens, tokens })
+  }
+
+  /**
+   * Updates `tokens` of current account and network.
+   *
+   * @param {string} selectedAddress Account address to be updated with.
+   *
+   */
+  _updateTokens (selectedAddress) {
+    const { tokens } = this._getTokenRelatedStates(selectedAddress)
+    this.store.updateState({ tokens })
+  }
+
+  /**
+   * A getter for `tokens` and `accountTokens` related states.
+   *
+   * @param {string} selectedAddress A new hex address for an account
+   * @returns {Object.<array, object, string, string>} States to interact with tokens in `accountTokens`
+   *
+   */
+  _getTokenRelatedStates (selectedAddress) {
+    const accountTokens = this.store.getState().accountTokens
+    if (!selectedAddress) selectedAddress = this.store.getState().selectedAddress
+    const providerType = this.network.providerStore.getState().type
+    if (!(selectedAddress in accountTokens)) accountTokens[selectedAddress] = {}
+    if (!(providerType in accountTokens[selectedAddress])) accountTokens[selectedAddress][providerType] = []
+    const tokens = accountTokens[selectedAddress][providerType]
+    return { tokens, accountTokens, providerType, selectedAddress }
+  }
 }
 
 module.exports = PreferencesController
diff --git a/app/scripts/metamask-controller.js b/app/scripts/metamask-controller.js
index bcc7075c2..db323e3fe 100644
--- a/app/scripts/metamask-controller.js
+++ b/app/scripts/metamask-controller.js
@@ -87,6 +87,7 @@ module.exports = class MetamaskController extends EventEmitter {
     this.preferencesController = new PreferencesController({
       initState: initState.PreferencesController,
       initLangCode: opts.initLangCode,
+      network: this.networkController,
     })
 
     // currency controller
@@ -1436,7 +1437,7 @@ module.exports = class MetamaskController extends EventEmitter {
   }
 
   /**
-   * A method for activating the retrieval of price data and auto detect tokens,
+   * A method for activating the retrieval of price data,
    * which should only be fetched when the UI is visible.
    * @private
    * @param {boolean} active - True if price data should be getting fetched.
diff --git a/app/scripts/migrations/028.js b/app/scripts/migrations/028.js
new file mode 100644
index 000000000..6553a1052
--- /dev/null
+++ b/app/scripts/migrations/028.js
@@ -0,0 +1,40 @@
+// next version number
+const version = 28
+
+/*
+
+normalizes txParams on unconfirmed txs
+
+*/
+const clone = require('clone')
+
+module.exports = {
+  version,
+
+  migrate: async function (originalVersionedData) {
+    const versionedData = clone(originalVersionedData)
+    versionedData.meta.version = version
+    const state = versionedData.data
+    const newState = transformState(state)
+    versionedData.data = newState
+    return versionedData
+  },
+}
+
+function transformState (state) {
+  const newState = state
+
+  if (newState.PreferencesController) {
+    if (newState.PreferencesController.tokens) {
+      const identities = newState.TransactionController.identities
+      const tokens = newState.PreferencesController.tokens
+      newState.PreferencesController.accountTokens = {}
+      for (const identity in identities) {
+        newState.PreferencesController.accountTokens[identity] = {'mainnet': tokens}
+      }
+      newState.PreferencesController.tokens = []
+    }
+  }
+
+  return newState
+}
diff --git a/app/scripts/migrations/index.js b/app/scripts/migrations/index.js
index bd0005221..3b512715e 100644
--- a/app/scripts/migrations/index.js
+++ b/app/scripts/migrations/index.js
@@ -38,4 +38,5 @@ module.exports = [
   require('./025'),
   require('./026'),
   require('./027'),
+  require('./028'),
 ]
diff --git a/test/unit/app/controllers/detect-tokens-test.js b/test/unit/app/controllers/detect-tokens-test.js
index 426ffe23a..d6c3fad8a 100644
--- a/test/unit/app/controllers/detect-tokens-test.js
+++ b/test/unit/app/controllers/detect-tokens-test.js
@@ -7,10 +7,11 @@ const PreferencesController = require('../../../../app/scripts/controllers/prefe
 
 describe('DetectTokensController', () => {
     const sandbox = sinon.createSandbox()
-    let clock
-    let keyringMemStore
-    before(async () => {
+    let clock, keyringMemStore, network, preferences
+    beforeEach(async () => {
       keyringMemStore = new ObservableStore({ isUnlocked: false})
+      network = new NetworkController({ provider: { type: 'mainnet' }})
+      preferences = new PreferencesController({ network })
     })
       after(() => {
         sandbox.restore()
@@ -25,9 +26,7 @@ describe('DetectTokensController', () => {
 
   it('should be called on every polling period', async () => {
     clock = sandbox.useFakeTimers()
-    const network = new NetworkController()
     network.setProviderType('mainnet')
-    const preferences = new PreferencesController()
     const controller = new DetectTokensController({ preferences: preferences, network: network, keyringMemStore: keyringMemStore })
     controller.isOpen = true
     controller.isUnlocked = true
@@ -45,9 +44,7 @@ describe('DetectTokensController', () => {
   })
 
   it('should not check tokens while in test network', async () => {
-    const network = new NetworkController()
     network.setProviderType('rinkeby')
-    const preferences = new PreferencesController()
     const controller = new DetectTokensController({ preferences: preferences, network: network, keyringMemStore: keyringMemStore })
     controller.isOpen = true
     controller.isUnlocked = true
@@ -61,9 +58,7 @@ describe('DetectTokensController', () => {
   })
 
   it('should only check and add tokens while in main network', async () => {
-    const network = new NetworkController()
     network.setProviderType('mainnet')
-    const preferences = new PreferencesController()
     const controller = new DetectTokensController({ preferences: preferences, network: network, keyringMemStore: keyringMemStore })
     controller.isOpen = true
     controller.isUnlocked = true
@@ -80,9 +75,7 @@ describe('DetectTokensController', () => {
   })
 
   it('should not detect same token while in main network', async () => {
-    const network = new NetworkController()
     network.setProviderType('mainnet')
-    const preferences = new PreferencesController()
     preferences.addToken('0x0d262e5dc4a06a0f1c90ce79c7a60c09dfc884e4', 'J8T', 8)
     const controller = new DetectTokensController({ preferences: preferences, network: network, keyringMemStore: keyringMemStore })
     controller.isOpen = true
@@ -100,9 +93,7 @@ describe('DetectTokensController', () => {
   })
 
   it('should trigger detect new tokens when change address', async () => {
-    const network = new NetworkController()
     network.setProviderType('mainnet')
-    const preferences = new PreferencesController()
     const controller = new DetectTokensController({ preferences: preferences, network: network, keyringMemStore: keyringMemStore })
     controller.isOpen = true
     controller.isUnlocked = true
@@ -112,9 +103,7 @@ describe('DetectTokensController', () => {
   })
 
   it('should trigger detect new tokens when submit password', async () => {
-    const network = new NetworkController()
     network.setProviderType('mainnet')
-    const preferences = new PreferencesController()
     const controller = new DetectTokensController({ preferences: preferences, network: network, keyringMemStore: keyringMemStore })
     controller.isOpen = true
     controller.selectedAddress = '0x0'
@@ -124,9 +113,7 @@ describe('DetectTokensController', () => {
   })
 
   it('should not trigger detect new tokens when not open or not unlocked', async () => {
-    const network = new NetworkController()
     network.setProviderType('mainnet')
-    const preferences = new PreferencesController()
     const controller = new DetectTokensController({ preferences: preferences, network: network, keyringMemStore: keyringMemStore })
     controller.isOpen = true
     controller.isUnlocked = false
diff --git a/test/unit/app/controllers/preferences-controller-test.js b/test/unit/app/controllers/preferences-controller-test.js
index e055500b1..9b2c846bd 100644
--- a/test/unit/app/controllers/preferences-controller-test.js
+++ b/test/unit/app/controllers/preferences-controller-test.js
@@ -1,11 +1,14 @@
 const assert = require('assert')
+const ObservableStore = require('obs-store')
 const PreferencesController = require('../../../../app/scripts/controllers/preferences')
 
 describe('preferences controller', function () {
   let preferencesController
+  let network
 
   beforeEach(() => {
-    preferencesController = new PreferencesController()
+    network = {providerStore: new ObservableStore({ type: 'mainnet' })}
+    preferencesController = new PreferencesController({ network })
   })
 
   describe('setAddresses', function () {
@@ -28,6 +31,20 @@ describe('preferences controller', function () {
       })
     })
 
+    it('should create account tokens for each account in the store', function () {
+      preferencesController.setAddresses([
+        '0xda22le',
+        '0x7e57e2',
+      ])
+
+      const accountTokens = preferencesController.store.getState().accountTokens
+
+      assert.deepEqual(accountTokens, {
+        '0xda22le': {},
+        '0x7e57e2': {},
+      })
+    })
+
     it('should replace its list of addresses', function () {
       preferencesController.setAddresses([
         '0xda22le',
@@ -64,6 +81,17 @@ describe('preferences controller', function () {
       assert.equal(preferencesController.store.getState().identities['0xda22le'], undefined)
     })
 
+    it('should remove an address from state and respective tokens', function () {
+      preferencesController.setAddresses([
+        '0xda22le',
+        '0x7e57e2',
+      ])
+
+      preferencesController.removeAddress('0xda22le')
+
+      assert.equal(preferencesController.store.getState().accountTokens['0xda22le'], undefined)
+    })
+
     it('should switch accounts if the selected address is removed', function () {
       preferencesController.setAddresses([
         '0xda22le',
@@ -158,6 +186,42 @@ describe('preferences controller', function () {
       await preferencesController.addToken(address, symbol, decimals)
       assert.equal(preferencesController.getTokens().length, 1, 'one token added for 2nd address')
     })
+
+    it('should add token per account', async function () {
+      const addressFirst = '0xabcdef1234567'
+      const addressSecond = '0xabcdef1234568'
+      const symbolFirst = 'ABBR'
+      const symbolSecond = 'ABBB'
+      const decimals = 5
+
+      await preferencesController.setSelectedAddress('0x7e57e2')
+      await preferencesController.addToken(addressFirst, symbolFirst, decimals)
+      const tokensFirstAddress = preferencesController.getTokens()
+
+      await preferencesController.setSelectedAddress('0xda22le')
+      await preferencesController.addToken(addressSecond, symbolSecond, decimals)
+      const tokensSeconAddress = preferencesController.getTokens()
+
+      assert.notEqual(tokensFirstAddress, tokensSeconAddress, 'add different tokens for two account and tokens are equal')
+    })
+
+    it('should add token per network', async function () {
+      const addressFirst = '0xabcdef1234567'
+      const addressSecond = '0xabcdef1234568'
+      const symbolFirst = 'ABBR'
+      const symbolSecond = 'ABBB'
+      const decimals = 5
+
+      network.providerStore.updateState({ type: 'mainnet' })
+      await preferencesController.addToken(addressFirst, symbolFirst, decimals)
+      const tokensFirstAddress = preferencesController.getTokens()
+
+      network.providerStore.updateState({ type: 'rinkeby' })
+      await preferencesController.addToken(addressSecond, symbolSecond, decimals)
+      const tokensSeconAddress = preferencesController.getTokens()
+
+      assert.notEqual(tokensFirstAddress, tokensSeconAddress, 'add different tokens for two networks and tokens are equal')
+    })
   })
 
   describe('removeToken', function () {
@@ -182,6 +246,98 @@ describe('preferences controller', function () {
       const [token1] = tokens
       assert.deepEqual(token1, {address: '0xb', symbol: 'B', decimals: 5})
     })
+
+    it('should remove a token from its state on corresponding address', async function () {
+      await preferencesController.setSelectedAddress('0x7e57e2')
+      await preferencesController.addToken('0xa', 'A', 4)
+      await preferencesController.addToken('0xb', 'B', 5)
+      await preferencesController.setSelectedAddress('0x7e57e3')
+      await preferencesController.addToken('0xa', 'A', 4)
+      await preferencesController.addToken('0xb', 'B', 5)
+      const initialTokensSecond = preferencesController.getTokens()
+      await preferencesController.setSelectedAddress('0x7e57e2')
+      await preferencesController.removeToken('0xa')
+
+      const tokensFirst = preferencesController.getTokens()
+      assert.equal(tokensFirst.length, 1, 'one token removed in account')
+
+      const [token1] = tokensFirst
+      assert.deepEqual(token1, {address: '0xb', symbol: 'B', decimals: 5})
+
+      await preferencesController.setSelectedAddress('0x7e57e3')
+      const tokensSecond = preferencesController.getTokens()
+      assert.deepEqual(tokensSecond, initialTokensSecond, 'token deleted for account')
+    })
+
+    it('should remove a token from its state on corresponding network', async function () {
+      network.providerStore.updateState({ type: 'mainnet' })
+      await preferencesController.addToken('0xa', 'A', 4)
+      await preferencesController.addToken('0xb', 'B', 5)
+      network.providerStore.updateState({ type: 'rinkeby' })
+      await preferencesController.addToken('0xa', 'A', 4)
+      await preferencesController.addToken('0xb', 'B', 5)
+      const initialTokensSecond = preferencesController.getTokens()
+      network.providerStore.updateState({ type: 'mainnet' })
+      await preferencesController.removeToken('0xa')
+
+      const tokensFirst = preferencesController.getTokens()
+      assert.equal(tokensFirst.length, 1, 'one token removed in network')
+
+      const [token1] = tokensFirst
+      assert.deepEqual(token1, {address: '0xb', symbol: 'B', decimals: 5})
+
+      network.providerStore.updateState({ type: 'rinkeby' })
+      const tokensSecond = preferencesController.getTokens()
+      assert.deepEqual(tokensSecond, initialTokensSecond, 'token deleted for network')
+    })
+  })
+
+  describe('on setSelectedAddress', function () {
+    it('should update tokens from its state on corresponding address', async function () {
+      await preferencesController.setSelectedAddress('0x7e57e2')
+      await preferencesController.addToken('0xa', 'A', 4)
+      await preferencesController.addToken('0xb', 'B', 5)
+      await preferencesController.setSelectedAddress('0x7e57e3')
+      await preferencesController.addToken('0xa', 'C', 4)
+      await preferencesController.addToken('0xb', 'D', 5)
+
+      await preferencesController.setSelectedAddress('0x7e57e2')
+      const initialTokensFirst = preferencesController.getTokens()
+      await preferencesController.setSelectedAddress('0x7e57e3')
+      const initialTokensSecond = preferencesController.getTokens()
+
+      assert.notDeepEqual(initialTokensFirst, initialTokensSecond, 'tokens not equal for different accounts and tokens')
+
+      await preferencesController.setSelectedAddress('0x7e57e2')
+      const tokensFirst = preferencesController.getTokens()
+      await preferencesController.setSelectedAddress('0x7e57e3')
+      const tokensSecond = preferencesController.getTokens()
+
+      assert.deepEqual(tokensFirst, initialTokensFirst, 'tokens equal for same account')
+      assert.deepEqual(tokensSecond, initialTokensSecond, 'tokens equal for same account')
+    })
+  })
+
+  describe('on updateStateNetworkType', function () {
+    it('should remove a token from its state on corresponding network', async function () {
+      network.providerStore.updateState({ type: 'mainnet' })
+      await preferencesController.addToken('0xa', 'A', 4)
+      await preferencesController.addToken('0xb', 'B', 5)
+      const initialTokensFirst = preferencesController.getTokens()
+      network.providerStore.updateState({ type: 'rinkeby' })
+      await preferencesController.addToken('0xa', 'C', 4)
+      await preferencesController.addToken('0xb', 'D', 5)
+      const initialTokensSecond = preferencesController.getTokens()
+
+      assert.notDeepEqual(initialTokensFirst, initialTokensSecond, 'tokens not equal for different networks and tokens')
+
+      network.providerStore.updateState({ type: 'mainnet' })
+      const tokensFirst = preferencesController.getTokens()
+      network.providerStore.updateState({ type: 'rinkeby' })
+      const tokensSecond = preferencesController.getTokens()
+      assert.deepEqual(tokensFirst, initialTokensFirst, 'tokens equal for same network')
+      assert.deepEqual(tokensSecond, initialTokensSecond, 'tokens equal for same network')
+    })
   })
 })
 
diff --git a/ui/app/actions.js b/ui/app/actions.js
index 7a8d9667d..4f71d911b 100644
--- a/ui/app/actions.js
+++ b/ui/app/actions.js
@@ -1483,11 +1483,12 @@ function showAccountDetail (address) {
   return (dispatch) => {
     dispatch(actions.showLoadingIndication())
     log.debug(`background.setSelectedAddress`)
-    background.setSelectedAddress(address, (err) => {
+    background.setSelectedAddress(address, (err, tokens) => {
       dispatch(actions.hideLoadingIndication())
       if (err) {
         return dispatch(actions.displayWarning(err.message))
       }
+      dispatch(updateTokens(tokens))
       dispatch({
         type: actions.SHOW_ACCOUNT_DETAIL,
         value: address,