Start /api/v1/offline/sync endpoint

app/FakeRequest.js

@@ -0,0 +1,103 @@
+const { Injectable } = require('flitter-di')
+const FakeResponse = require('./FakeResponse')
+
+class FakeRequest extends Injectable {
+    static get services() {
+        return [...super.services, 'models', 'app', 'configs']
+    }
+
+    response = new FakeResponse()
+
+    body = {}
+    session = {}
+    sessionID = undefined
+    user = undefined
+    is_auth = false
+    ip = undefined
+    headers = {}
+    connection = {
+        remoteAddress: undefined,
+    }
+    method = 'get'
+    originalUrl = undefined
+    path = undefined
+    params = {}
+    query = {}
+    xhr = false
+
+    async deflate() {
+        return {
+            body: {...this.body},
+            session_id: this.sessionID,
+            user_id: this.user?.id,
+            is_auth: this.is_auth,
+            ip: this.ip,
+            headers: {...this.headers},
+            remote_addr: this.connection?.remoteAddress,
+            method: this.method,
+            original_url: this.originalUrl,
+            path: this.path,
+            params: {...this.params},
+            query: {...this.query},
+            xhr: this.xhr,
+        }
+    }
+
+    static serialize_request(req) {
+        return {
+            body: {...req.body},
+            session_id: req.sessionID,
+            user_id: req.user?.id,
+            is_auth: req.is_auth,
+            ip: req.ip,
+            headers: {...req.headers},
+            remote_addr: req.connection?.remoteAddress,
+            method: req.method,
+            original_url: req.originalUrl,
+            path: req.path,
+            params: {...req.params},
+            query: {...req.query},
+            xhr: req.xhr,
+        }
+    }
+
+    async inflate(data) {
+        const User = this.models.get('auth:User')
+        const Session = require('./models/Session')
+        this.app.di().inject(Session)
+
+        this.body = data.body
+
+        this.sessionID = data.session_id || data.sessionID
+        if ( this.sessionID ) {
+            const session = await Session.findOne({ _id: this.sessionID })
+            if ( session ) {
+                this._session_instance = session
+                this.session = session.session
+            }
+        }
+
+        this.user_id = data.user_id || data.user?.id
+        if ( this.user_id ) {
+            const user = await User.findById(this.user_id)
+            if ( user ) {
+                this.user = user
+            }
+        }
+
+        this.is_auth = data.is_auth
+        this.ip = data.ip
+        this.headers = {...(data.headers || {})}
+        this.connection = {
+            remoteAddress: data.remote_addr || data.connection?.remoteAddress,
+        }
+        this.method = data.method
+        this.originalUrl = data.original_url || data.originalUrl
+        this.path = data.path
+        this.params = {...(data.params || {})}
+        this.query = {...(data.query || {})}
+        this.xhr = data.xhr
+    }
+}
+
+module.exports = exports = FakeRequest

app/FakeResponse.js

@@ -0,0 +1,52 @@
+const { Injectable } = require('flitter-di')
+
+class FakeResponse extends Injectable {
+    _message = 'OK'
+    _status = 200
+    _api_data = undefined
+    _send_data = undefined
+    _view = undefined
+    _view_data = undefined
+
+    status(set = undefined) {
+        if ( set ) {
+            this._status = set
+            return this
+        } else {
+            return this._status
+        }
+    }
+
+    message(set = undefined) {
+        if ( set ) {
+            this._message = set
+            return this
+        } else {
+            return this._message
+        }
+    }
+
+    api(data = {}) {
+        this._api_data = data
+        return this
+    }
+
+    send(data = '') {
+        this._send_data = ''
+        return this
+    }
+
+    view(name, data = {}) {
+        this._view = name
+        this._view_data = data
+        return this
+    }
+
+    page(name, data = {}) {
+        this._view = name
+        this._view_data = data
+        return this
+    }
+}
+
+module.exports = exports = FakeResponse

app/controllers/api/v1/FormCode.controller.js

@@ -28,6 +28,21 @@ class FormCode extends Controller {
             code: '',
         })
 
+        if ( req.body.Language ) {
+            code.Language = req.body.Language
+        }
+
+        if ( req.body.code ) {
+            code.code = req.body.code
+        }
+
+        if ( req.body.UUID ) {
+            const existingUUID = await Codium.findOne({ UUID: req.body.UUID })
+            if ( !existingUUID ) {
+                code.UUID = req.body.UUID
+            }
+        }
+
         await code.save()
         return res.api(code)
     }

app/controllers/api/v1/Offline.controller.js

@@ -0,0 +1,223 @@
+const { Controller } = require('libflitter')
+const FakeRequest = require('../../../FakeRequest')
+
+class OfflineController extends Controller {
+    static get services() {
+        return [...super.services, 'models', 'controllers', 'app']
+    }
+
+    async do_sync(req, res, next) {
+        // TODO account for modify date to not overwrite more recent data!!
+
+        const OfflineDataSync = this.models.get('api:OfflineDataSync')
+        const record = await OfflineDataSync.from_request(req)
+
+        console.log('sync data', record)
+
+        const return_maps = {}
+
+        // pages
+        if ( Array.isArray(record.pages) ) {
+            return_maps.pages = await this.do_sync_pages(req, record.pages)
+        }
+
+        // pageNodes
+        if ( Array.isArray(record.pageNodes) ) {
+            return_maps.pageNodes = await this.do_sync_page_nodes(req, record.pageNodes, record.pages)
+        }
+
+        // codiums
+        if ( Array.isArray(record.codiums) ) {
+            return_maps.codiums = await this.do_sync_codiums(req, record.codiums)
+        }
+
+        // databases
+        // databaseColumns
+        // databaseEntries
+        // fileGroups
+
+        return res.api(return_maps)
+    }
+
+    async do_sync_codiums(req, codium_recs) {
+        const FormCodeController = this.controllers.get('api:v1:FormCode')
+        const Codium = this.models.get('api:Codium')
+
+        const uuid_mapping = {}
+
+        for ( const rec of codium_recs ) {
+            const existing_code = await Codium.findOne({ UUID: rec.UUID })
+
+            const fake_req = this.app.di().make(FakeRequest)
+            await fake_req.inflate(req)
+            fake_req.params = { PageId: rec.PageId, NodeId: rec.NodeId, CodiumId: rec.UUID }
+            fake_req.body = rec
+
+            if ( !existing_code && !rec.deleted ) {
+                // This was created on the client side
+                await FormCodeController.create_new(fake_req, fake_req.response)
+                uuid_mapping[rec.UUID] = fake_req.response?._api_data?.UUID
+            } else {
+                if ( rec.deleted ) {
+                    // The code was deleted
+                    await FormCodeController.drop_code(fake_req, fake_req.response)
+                    uuid_mapping[rec.UUID] = false
+                } else {
+                    // The code was updated
+                    await FormCodeController.set_values(fake_req, fake_req.response)
+                    uuid_mapping[rec.UUID] = fake_req.response?._api_data?.UUID
+                }
+            }
+        }
+
+        return uuid_mapping
+    }
+
+    async do_sync_page_nodes(req, page_node_recs, page_recs) {
+        const PageController = this.controllers.get('api:v1:Page')
+        const PageModel = this.models.get('api:Page')
+        const NodeModel = this.models.get('api:Node')
+
+        const page_id_x_page = {}
+        for ( const page of page_recs ) {
+            page_id_x_page[page.UUID] = page
+        }
+
+        const uuid_mapping = {}
+
+        for ( const rec of page_node_recs ) {
+            rec.Value = rec.ValueJSON ? JSON.parse(rec.ValueJSON) : {}
+
+            const existing_node = await NodeModel.findOne({ UUID: rec.UUID })
+            const offline_page = page_id_x_page[rec.PageId]
+            let online_page = await PageModel.findOne({ UUID: rec.PageId })
+
+            if ( existing_node && rec.deleted ) {
+                // node that exists on the server was deleted
+                if ( online_page ) {
+                    // if it existed in the online page, delete it
+                    online_page.NodeIds = online_page.NodeIds.filter(x => x !== rec.UUID)
+                    await online_page.save()
+                }
+
+                await existing_node.delete()
+                uuid_mapping[rec.UUID] = false
+            } else if ( existing_node ) {
+                // if the node exists, we assume it's already in a page structure
+                // update the server-side record if the user can access it
+                if ( await online_page.is_accessible_by(req.user, 'edit') ) {
+                    existing_node.Type = rec.Type
+                    existing_node.Value = rec.Value
+                    existing_node.UpdatedAt = new Date(rec.UpdatedAt)
+                    existing_node.UpdateUserId = req.user.id
+
+                    await existing_node.save()
+                    uuid_mapping[rec.UUID] = existing_node.UUID
+                }
+            } else if ( !existing_node && online_page && !rec.deleted ) {
+                // the node was created offline
+                // first, save the node to the page
+                const fake_req = this.app.di().make(FakeRequest)
+                await fake_req.inflate(req)
+                fake_req.params = { PageId: online_page.UUID }
+                fake_req.body = { nodeData: {...rec} }
+
+                await PageController.save_node_to_page(fake_req, fake_req.response)
+                const new_uuid = uuid_mapping[rec.UUID] = fake_req.response?._api_data?.UUID
+                online_page = await PageModel.findOne({ UUID: rec.PageId })  // to refresh the model's data
+
+                // now, try to place the node in the correct spot
+                // if first in offline page, make first in online page
+                if ( Array.isArray(offline_page?.NodeIds) && offline_page.NodeIds[0] === rec.UUID ) {
+                    online_page.NodeIds = [new_uuid, ...online_page.NodeIds.filter(x => x !== new_uuid && x !== rec.UUID)]
+                } else if ( Array.isArray(offline_page?.NodeIds) && offline_page.NodeIds.includes(rec.UUID) ) {
+                    if ( offline_page.NodeIds.slice(-1)[0] !== rec.UUID ) {
+                        // We're not first, and we're not last, so try to place in the correct spot
+                        const index = offline_page.NodeIds.findIndex(x => x.UUID === rec.UUID)
+                        let predecessor = undefined
+                        let index_diff = 1
+
+                        while ( !predecessor && (index - index_diff) >= 0 ) {
+                            const maybe_predecessor = offline_page.NodeIds[index - index_diff]
+                            if ( online_page.NodeIds.includes(maybe_predecessor) ) {
+                                predecessor = maybe_predecessor
+                            } else {
+                                index_diff += 1
+                            }
+                        }
+
+                        if ( predecessor ) {
+                            // We found the predecessor to insert the child in the existing node
+                            const newNodeIds = []
+                            online_page.NodeIds.forEach(uuid => {
+                                newNodeIds.push(uuid)
+                                if ( uuid === predecessor ) {
+                                    newNodeIds.push(new_uuid)
+                                }
+                            })
+
+                            online_page.NodeIds = newNodeIds
+                        }
+                    }
+                }
+
+                await online_page.save()
+            }
+
+            // assuming the pages were created first, we should never have a case
+            // where we have !existing_node && !online_page
+        }
+
+        return uuid_mapping
+    }
+
+    async do_sync_pages(req, page_recs) {
+        // TODO order pages by create date to prevent child-before-parent errors
+        const PageController = this.controllers.get('api:v1:Page')
+        const PageModel = this.models.get('api:Page')
+
+        const uuid_mapping = {}
+
+        for ( const rec of page_recs ) {
+            const UUID = rec.UUID
+            if ( !UUID ) continue;
+
+            const existing_page = await PageModel.findOne({ UUID })
+            const fake_req = this.app.di().make(FakeRequest)
+            await fake_req.inflate(req)
+            fake_req.body = {...rec}
+
+            if ( !existing_page && !rec.deleted ) {
+                // create the new page
+                if ( parseInt(rec.ParentId) === 0 ) {
+                    // Create a new top-level page
+                    fake_req.body.omit_starter = true
+                    fake_req.body.name = rec.Name
+                    await PageController.create_top_level(fake_req, fake_req.response)
+                } else {
+                    // Create a new child page
+                    fake_req.body.omit_starter = true
+                    fake_req.body.name = rec.Name
+                    fake_req.body.parentId = rec.ParentId
+                    await PageController.create_child(fake_req, fake_req.response)
+                }
+            } else if ( existing_page ) {
+                fake_req.params = { PageId: rec.UUID }
+
+                if ( rec.deleted ) {
+                    // The page was deleted on the client
+                    await PageController.delete_page(fake_req, fake_req.response)
+                } else {
+                    // update an existing page
+                    await PageController.save_page(fake_req, fake_req.response)
+                }
+            }
+
+            uuid_mapping[rec.UUID] = fake_req.response?._api_data?.UUID || false
+        }
+
+        return uuid_mapping
+    }
+}
+
+module.exports = exports = OfflineController

app/controllers/api/v1/Page.controller.js

@@ -28,7 +28,7 @@ class Page extends Controller {
         if ( PageId ) {
             page = await PageModel.findOne({UUID: PageId})
             if ( !page ) return res.status(404).message('Page not found with that ID.').api({})
-            if ( !(await page.is_accessible_by(req.user, 'update')) ) return req.security.deny()
+            if ( !(await page.is_accessible_by(req.user, 'update')) ) return res.security.deny()
         } else {
             page = new PageModel
             page.CreatedUserId = req.user.id
@@ -89,7 +89,7 @@ class Page extends Controller {
 
         const page = await PageModel.findOne({UUID: PageId})
         if ( !page ) return res.status(404).message('Page not found with that ID.').api({})
-        if ( !(await page.is_accessible_by(req.user, 'update')) ) return req.security.deny()
+        if ( !(await page.is_accessible_by(req.user, 'update')) ) return res.security.deny()
 
         const nodes = await Node.find({PageId: page.UUID})
         const assoc_nodes = {}
@@ -116,6 +116,14 @@ class Page extends Controller {
                 CreatedUserId: req.user._id,
                 UpdateUserId: req.user._id,
             })
+
+            if ( node.UUID ) {
+                const existingUUID = await Node.findOne({ UUID: node.UUID })
+                if ( !existingUUID ) {
+                    node_obj.UUID = node.UUID
+                }
+            }
+
             await node_obj.save()
 
             page.NodeIds.push(node_obj.UUID);
@@ -208,6 +216,13 @@ class Page extends Controller {
             UpdateUserId: req.user.id
         })
 
+        if ( req.body.UUID ) {
+            const existingUUID = await PageModel.findOne({UUID: req.body.UUID})
+            if ( !existingUUID ) {
+                new_page.UUID = req.body.UUID
+            }
+        }
+
         await new_page.save()
 
         root_page.ChildPageIds.push(new_page.UUID)
@@ -216,19 +231,21 @@ class Page extends Controller {
         req.user.allow(`page:${new_page.UUID}`)
         await req.user.save()
 
-        const starter_node = new Node({
-            Type: 'paragraph',
-            Value: {
-                Value: 'Click to edit...',
-            },
-            PageId: new_page.UUID,
-            CreatedUserId: req.user.id,
-            UpdateUserId: req.user.id
-        })
+        if ( !req.body.omit_starter ) {
+            const starter_node = new Node({
+                Type: 'paragraph',
+                Value: {
+                    Value: 'Double-click to edit...',
+                },
+                PageId: new_page.UUID,
+                CreatedUserId: req.user.id,
+                UpdateUserId: req.user.id
+            })
 
-        await starter_node.save()
-        new_page.NodeIds.push(starter_node.UUID)
-        await new_page.save()
+            await starter_node.save()
+            new_page.NodeIds.push(starter_node.UUID)
+            await new_page.save()
+        }
 
         return res.api(new_page)
     }
@@ -258,6 +275,13 @@ class Page extends Controller {
             UpdateUserId: req.user.id,
         })
 
+        if ( req.body.UUID ) {
+            const existingUUID = await PageModel.findOne({UUID: req.body.UUID})
+            if ( !existingUUID ) {
+                new_page.UUID = req.body.UUID
+            }
+        }
+
         await new_page.save()
 
         parent.ChildPageIds.push(new_page.UUID)
@@ -266,19 +290,21 @@ class Page extends Controller {
         req.user.allow(`page:${new_page.UUID}`)
         await req.user.save()
 
-        const starter_node = new Node({
-            Type: 'paragraph',
-            Value: {
-                Value: 'Click to edit...',
-            },
-            PageId: new_page.UUID,
-            CreatedUserId: req.user.id,
-            UpdateUserId: req.user.id
-        })
+        if ( !req.body.omit_starter ) {
+            const starter_node = new Node({
+                Type: 'paragraph',
+                Value: {
+                    Value: 'Click to edit...',
+                },
+                PageId: new_page.UUID,
+                CreatedUserId: req.user.id,
+                UpdateUserId: req.user.id
+            })
 
-        await starter_node.save()
-        new_page.NodeIds.push(starter_node.UUID)
-        await new_page.save()
+            await starter_node.save()
+            new_page.NodeIds.push(starter_node.UUID)
+            await new_page.save()
+        }
 
         return res.api(new_page)
     }

app/models/Session.js

@@ -0,0 +1,13 @@
+const { Model } = require('flitter-orm')
+
+class SessionModel extends Model {
+    static collection = 'flitter_sessions'
+    static get schema() {
+        return {
+            expires: Date,
+            session: Object,
+        }
+    }
+}
+
+module.exports = exports = SessionModel

app/models/api/OfflineDataSync.model.js

@@ -0,0 +1,37 @@
+const { Model } = require('flitter-orm')
+const uuid = require('uuid/v4')
+
+class OfflineDataSyncModel extends Model {
+    static get schema() {
+        return {
+            user_id: String,
+            sync_timestamp: { type: Date, default: () => new Date() },
+            UUID: { type: String, default: uuid },
+            codiums: [Object],
+            database: [Object],
+            databaseColumns: [Object],
+            databaseEntries: [Object],
+            fileGroups: [Object],
+            pages: [Object],
+            pageNodes: [Object],
+        }
+    }
+
+    static async from_request(req) {
+        const rec = new this({
+            user_id: req.user.id,
+            codiums: req.body?.dirtyRecords.codiums,
+            database: req.body?.dirtyRecords.database,
+            databaseColumns: req.body?.dirtyRecords.databaseColumns,
+            databaseEntries: req.body?.dirtyRecords.databaseEntries,
+            fileGroups: req.body?.dirtyRecords.fileGroups,
+            pages: req.body?.dirtyRecords.pages,
+            pageNodes: req.body?.dirtyRecords.pageNodes,
+        })
+
+        await rec.save()
+        return rec
+    }
+}
+
+module.exports = exports = OfflineDataSyncModel

app/routing/routers/api/v1.routes.js

@@ -99,6 +99,9 @@ const index = {
 
         // delete the specified code ref
         '/code/:PageId/:NodeId/delete/:CodiumId': ['controller::api:v1:FormCode.drop_code'],
+
+        // re-sync data when an offline client goes back online
+        '/offline/sync': ['controller::api:v1:Offline.do_sync'],
     },
 }