From 8e31215860749816ece2a9206f6b420bf9543ecf Mon Sep 17 00:00:00 2001
From: Julia Friesel <julia.friesel@gmail.com>
Date: Thu, 27 Sep 2018 17:05:36 +0200
Subject: [PATCH] Run migrations if necessary

---
 db/index.js                    |  41 ++++++---
 db/{schema.js => schemas/0.js} |  27 +++---
 db/schemas/1.js                | 156 +++++++++++++++++++++++++++++++++
 db/schemas/index.js            |   4 +
 4 files changed, 202 insertions(+), 26 deletions(-)
 rename db/{schema.js => schemas/0.js} (90%)
 create mode 100644 db/schemas/1.js
 create mode 100644 db/schemas/index.js

diff --git a/db/index.js b/db/index.js
index 0b0c15d..34afd23 100644
--- a/db/index.js
+++ b/db/index.js
@@ -11,13 +11,38 @@ import {
   longAndComplicatedCycleWithCervix,
   cycleWithTempAndNoCervixShift
 } from './fixtures'
-import dbSchema from './schema'
+import schemas from './schemas'
 
 let db
-const realmConfig = {
-  schema: dbSchema
+
+export async function openDb ({ hash, persistConnection }) {
+  const realmConfig = {}
+  if (hash) {
+    realmConfig.encryptionKey = hashToInt8Array(hash)
+  }
+
+  // perform migrations if necessary, see https://realm.io/docs/javascript/2.8.0/#migrations
+  let nextSchemaIndex = Realm.schemaVersion(Realm.defaultPath)
+  while (nextSchemaIndex < schemas.length - 1) {
+    const tempConfig = Object.assign(
+      realmConfig,
+      schemas[nextSchemaIndex++]
+    )
+    const migratedRealm = new Realm(tempConfig)
+    migratedRealm.close()
+  }
+
+  // open the Realm with the latest schema
+  realmConfig.schema = schemas[schemas.length - 1]
+  const connection = await Realm.open(Object.assign(
+    realmConfig,
+    schemas[schemas.length - 1]
+  ))
+
+  if (persistConnection) db = connection
 }
 
+
 export function getBleedingDaysSortedByDate() {
   return db.objects('CycleDay').filtered('bleeding != null').sorted('date', true)
 }
@@ -160,16 +185,6 @@ export function requestHash(type, pw) {
   }))
 }
 
-export async function openDb ({ hash, persistConnection }) {
-  if (hash) {
-    realmConfig.encryptionKey = hashToInt8Array(hash)
-  }
-
-  const connection = await Realm.open(realmConfig)
-
-  if (persistConnection) db = connection
-}
-
 export async function changeEncryptionAndRestartApp(hash) {
   let key
   if (hash) key = hashToInt8Array(hash)
diff --git a/db/schema.js b/db/schemas/0.js
similarity index 90%
rename from db/schema.js
rename to db/schemas/0.js
index 96445cc..1387195 100644
--- a/db/schema.js
+++ b/db/schemas/0.js
@@ -67,8 +67,6 @@ const SexSchema = {
     patch: { type: 'bool', optional: true },
     ring: { type: 'bool', optional: true },
     implant: { type: 'bool', optional: true },
-    diaphragm: { type: 'bool', optional: true },
-    none: { type: 'bool', optional: true },
     other: { type: 'bool', optional: true },
     note: { type: 'string', optional: true }
   }
@@ -129,14 +127,17 @@ const CycleDaySchema = {
   }
 }
 
-export default [
-  CycleDaySchema,
-  TemperatureSchema,
-  BleedingSchema,
-  MucusSchema,
-  CervixSchema,
-  NoteSchema,
-  DesireSchema,
-  SexSchema,
-  PainSchema
-]
+export default {
+  schema: [
+    CycleDaySchema,
+    TemperatureSchema,
+    BleedingSchema,
+    MucusSchema,
+    CervixSchema,
+    NoteSchema,
+    DesireSchema,
+    SexSchema,
+    PainSchema
+  ],
+  schemaVersion: 0
+}
diff --git a/db/schemas/1.js b/db/schemas/1.js
new file mode 100644
index 0000000..572a221
--- /dev/null
+++ b/db/schemas/1.js
@@ -0,0 +1,156 @@
+const TemperatureSchema = {
+  name: 'Temperature',
+  properties: {
+    value: 'double',
+    exclude: 'bool',
+    time: {
+      type: 'string',
+      optional: true
+    },
+    note: {
+      type: 'string',
+      optional: true
+    }
+  }
+}
+
+const BleedingSchema = {
+  name: 'Bleeding',
+  properties: {
+    value: 'int',
+    exclude: 'bool'
+  }
+}
+
+const MucusSchema = {
+  name: 'Mucus',
+  properties: {
+    feeling: 'int',
+    texture: 'int',
+    value: 'int',
+    exclude: 'bool'
+  }
+}
+
+const CervixSchema = {
+  name: 'Cervix',
+  properties: {
+    opening: 'int',
+    firmness: 'int',
+    position: {type: 'int', optional: true },
+    exclude: 'bool'
+  }
+}
+
+const NoteSchema = {
+  name: 'Note',
+  properties: {
+    value: 'string'
+  }
+}
+
+const DesireSchema = {
+  name: 'Desire',
+  properties: {
+    value: 'int'
+  }
+}
+
+const SexSchema = {
+  name: 'Sex',
+  properties: {
+    solo: { type: 'bool', optional: true },
+    partner: { type: 'bool', optional: true },
+    condom: { type: 'bool', optional: true },
+    pill: { type: 'bool', optional: true },
+    iud: { type: 'bool', optional: true },
+    patch: { type: 'bool', optional: true },
+    ring: { type: 'bool', optional: true },
+    implant: { type: 'bool', optional: true },
+    diaphragm: { type: 'bool', optional: true },
+    none: { type: 'bool', optional: true },
+    other: { type: 'bool', optional: true },
+    note: { type: 'string', optional: true }
+  }
+}
+
+const PainSchema = {
+  name: 'Pain',
+  properties: {
+    cramps: { type: 'bool', optional: true },
+    ovulationPain: { type: 'bool', optional: true },
+    headache: { type: 'bool', optional: true },
+    backache: { type: 'bool', optional: true },
+    nausea: { type: 'bool', optional: true },
+    tenderBreasts: { type: 'bool', optional: true },
+    migraine: { type: 'bool', optional: true },
+    other: { type: 'bool', optional: true },
+    note: { type: 'string', optional: true }
+  }
+}
+
+const CycleDaySchema = {
+  name: 'CycleDay',
+  primaryKey: 'date',
+  properties: {
+    date: 'string',
+    temperature: {
+      type: 'Temperature',
+      optional: true
+    },
+    bleeding: {
+      type: 'Bleeding',
+      optional: true
+    },
+    mucus: {
+      type: 'Mucus',
+      optional: true
+    },
+    cervix: {
+      type: 'Cervix',
+      optional: true
+    },
+    note: {
+      type: 'Note',
+      optional: true
+    },
+    desire: {
+      type: 'Desire',
+      optional: true
+    },
+    sex: {
+      type: 'Sex',
+      optional: true
+    },
+    pain: {
+      type: 'Pain',
+      optional: true
+    }
+  }
+}
+
+export default {
+  schema: [
+    CycleDaySchema,
+    TemperatureSchema,
+    BleedingSchema,
+    MucusSchema,
+    CervixSchema,
+    NoteSchema,
+    DesireSchema,
+    SexSchema,
+    PainSchema
+  ],
+  schemaVersion: 1,
+  migration: (oldRealm, newRealm) => {
+    if (oldRealm.schemaVersion >= 1) return
+    const oldCycleDays = oldRealm.objects('CycleDay')
+    const newCycleDays = newRealm.objects('CycleDay')
+
+    oldCycleDays.forEach((day, i) => {
+      if (!day.sex) return
+      newCycleDays[i].sex.diaphragm = null
+      newCycleDays[i].sex.none = null
+    })
+  }
+}
diff --git a/db/schemas/index.js b/db/schemas/index.js
new file mode 100644
index 0000000..eacf7dd
--- /dev/null
+++ b/db/schemas/index.js
@@ -0,0 +1,4 @@
+import schema0 from './0.js'
+import schema1 from './1.js'
+
+export default [schema0, schema1]
\ No newline at end of file