socialnetworknews-api

commit 9d074189eb0142475ce2beefb0f3ad7888842b4a
parent 63a9cf2913ded097ba0b3300bb0af873605825a8
Author: MTRNord <mtrnord1@gmail.com>
Date:   Sun, 18 Feb 2018 18:29:07 +0100

Prepare DB and add basic swagger.yaml

Diffstat:
A
api/swagger.yaml
 | 
71
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
A
db/db.go
 | 
81
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
A
db/passwords/passwords.go
 | 
46
++++++++++++++++++++++++++++++++++++++++++++++

3 files changed, 198 insertions(+), 0 deletions(-)
diff --git a/api/swagger.yaml b/api/swagger.yaml
@@ -0,0 +1,70 @@
+swagger: "2.0"
+info:
+  description: "API Definition for the Social Networks News Project"
+  version: "0.0.0"
+  title: "Social Networks News Project API"
+  termsOfService: "TODO"
+  contact:
+    email: "freifunknews@nordgedanken.blog"
+  license:
+    name: "GPL-3.0"
+    url: "https://github.com/SocialNetworkNews/SocialNetworkNews_API/raw/master/LICENSE"
+host: "socialnetworksnews.nordgedanken.blog"
+basePath: "/api"
+tags:
+- name: "paper"
+  description: "Everything that is used for papers"
+- name: "user"
+  description: "Get user Data"
+schemes:
+- "https"
+paths:
+  /paper/{uuid}/yesterday:
+    get:
+      tags:
+      - "paper"
+      parameters:
+      - name: "uuid"
+        in: "path"
+        description: "UUID of the paper"
+        required: true
+        type: "integer"
+        format: "int64"
+      summary: "Get the Data that should get displayed of yesterday"
+      description: ""
+      operationId: "getYesterday"
+      produces:
+      - "application/json"
+      responses:
+        200:
+            description: OK
+            schema:
+              $ref: '#/definitions/PaperData'
+definitions:
+  PaperData:
+    type: "array"
+    items:
+      properties:
+        username:
+          type: "string"
+        user_id:
+          type: "string"
+        display_name:
+          type: "string"
+        userprofile_link:
+          type: "string"
+        text:
+          type: "string"
+        image_urls:
+          type: "array"
+          items:
+            type: "string"
+        created_at:
+          type: "string"
+        favorites:
+          type: "string"
+        retweets:
+          type: "string"
+        retweet:
+          type: "boolean"
+          default: false
+\ No newline at end of file
diff --git a/db/db.go b/db/db.go
@@ -0,0 +1,81 @@
+package db
+
+import (
+	"errors"
+	"github.com/dgraph-io/badger"
+	"github.com/shibukawa/configdir"
+	"os"
+	"path/filepath"
+	"sync"
+)
+
+var DB *badger.DB
+var onceDB sync.Once
+
+func OpenDB() (db *badger.DB, err error) {
+	onceDB.Do(func() {
+		// Open the data.db file. It will be created if it doesn't exist.
+		configDirs := configdir.New("SocialNetworksNews", "API")
+		filePath := filepath.ToSlash(configDirs.QueryFolders(configdir.Global)[0].Path)
+
+		if _, StatErr := os.Stat(filePath + "/data/"); os.IsNotExist(StatErr) {
+			MkdirErr := os.MkdirAll(filePath+"/data/", 0700)
+			if MkdirErr != nil {
+				err = MkdirErr
+				return
+			}
+		}
+		if _, StatErr := os.Stat(filePath + "/data/cache/"); os.IsNotExist(StatErr) {
+			MkdirErr := os.MkdirAll(filePath+"/data/cache/", 0700)
+			if MkdirErr != nil {
+				err = MkdirErr
+				return
+			}
+		}
+		opts := badger.DefaultOptions
+		opts.SyncWrites = false
+		opts.Dir = filePath + "/data/cache"
+		opts.ValueDir = filePath + "/data/cache"
+
+		if _, StatErr := os.Stat(filePath + "/data/cache/LOCK"); StatErr == nil {
+			DeleteErr := os.Remove(filePath + "/data/cache/LOCK")
+			if DeleteErr != nil {
+				err = DeleteErr
+				return
+			}
+		}
+
+		expDB, DBErr := badger.Open(opts)
+		if DBErr != nil {
+			err = DBErr
+			return
+		}
+		DB = expDB
+	})
+
+	if DB == nil {
+		err = errors.New("missing DB")
+		return
+	}
+
+	db = DB
+	return
+}
+
+// Get deduplicates all the Gets inside the Database to not repeat that much code.
+func Get(txn *badger.Txn, key []byte) (result []byte, err error) {
+	item, QueryErr := txn.Get(key)
+	if QueryErr != nil && QueryErr != badger.ErrKeyNotFound {
+		err = QueryErr
+		return
+	}
+	if QueryErr != badger.ErrKeyNotFound {
+		valueByte, valueErr := item.Value()
+		result = valueByte
+		if valueErr != nil {
+			err = valueErr
+			return
+		}
+	}
+	return
+}
diff --git a/db/passwords/passwords.go b/db/passwords/passwords.go
@@ -0,0 +1,46 @@
+package passwords
+
+import (
+	"fmt"
+	"github.com/SocialNetworkNews/SocialNetworkNews_API/db"
+	"github.com/dgraph-io/badger"
+	"golang.org/x/crypto/bcrypt"
+)
+
+func SavePassword(password, username string) error {
+	hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+	if err != nil {
+		return err
+	}
+
+	userDB, err := db.OpenDB()
+	if err != nil {
+		return err
+	}
+
+	return userDB.Update(func(txn *badger.Txn) error {
+		return txn.Set([]byte(fmt.Sprintf("users|%s|password", username)), hash)
+	})
+}
+
+func CheckPassword(username, password string) (bool, error) {
+	userDB, err := db.OpenDB()
+	if err != nil {
+		return false, err
+	}
+	var hash []byte
+
+	DBErr := userDB.View(func(txn *badger.Txn) error {
+		var err error
+		hash, err = db.Get(txn, []byte(fmt.Sprintf("users|%s|password", username)))
+		return err
+	})
+	if DBErr != nil {
+		return false, DBErr
+	}
+
+	if err := bcrypt.CompareHashAndPassword(hash, []byte(password)); err != nil {
+		return false, err
+	}
+	return true, nil
+}