Versioning works with /edit

Former-commit-id: 985172ae69b662d82d5ccdf43717293fe2ed15fb [formerly f0cd3a45bbdaf08230eeb33919389cb48190b367] [formerly 72cb8e73da135302b9cc81410934bfc569a2842d [formerly c15ac624b8e27598579fd64ee64e4f0251221760]]
Former-commit-id: 50bcb25221501c8dcd2d02057e270c749bdcda4b [formerly 063bef228a2e193d7fe5d8879f02983bc68501c4]
Former-commit-id: d004f2c61e3520bd284529ae6d64ffbb8f11a0c1

db.go

@@ -33,7 +33,7 @@ func Close() {
 	db.Close()
 }
 
-// Data for storing in DB
+// CowyoData is data for storing in DB
 type CowyoData struct {
 	Title       string
 	CurrentText string
@@ -44,14 +44,14 @@ type CowyoData struct {
 func hasPassword(title string) (bool, error) {
 	title = strings.ToLower(title)
 	if !open {
-		return false, fmt.Errorf("db must be opened before loading!")
+		return false, fmt.Errorf("db must be opened before loading")
 	}
 	hasPassword := false
 	err := db.View(func(tx *bolt.Tx) error {
 		var err error
 		b := tx.Bucket([]byte("datas"))
 		if b == nil {
-			return fmt.Errorf("db must be opened before loading!")
+			return fmt.Errorf("db must be opened before loading")
 		}
 		k := []byte(title)
 		val := b.Get(k)
@@ -77,17 +77,19 @@ func hasPassword(title string) (bool, error) {
 	return hasPassword, nil
 }
 
-func getCurrentText(title string) string {
+func getCurrentText(title string, version int) (string, []versionsInfo, bool) {
 	title = strings.ToLower(title)
+	var vi []versionsInfo
+	isCurrent := true
 	currentText := ""
 	if !open {
-		return currentText
+		return currentText, vi, isCurrent
 	}
 	err := db.View(func(tx *bolt.Tx) error {
 		var err error
 		b := tx.Bucket([]byte("datas"))
 		if b == nil {
-			return fmt.Errorf("db must be opened before loading!")
+			return fmt.Errorf("db must be opened before loading")
 		}
 		k := []byte(title)
 		val := b.Get(k)
@@ -100,12 +102,18 @@ func getCurrentText(title string) string {
 			return err
 		}
 		currentText = p.CurrentText
+		if version > -1 && version < len(p.Diffs) {
+			// get that version of text instead
+			currentText = rebuildTextsToDiffN(p, version)
+			isCurrent = false
+		}
+		vi = getImportantVersions(p)
 		return nil
 	})
 	if err != nil {
 		fmt.Printf("Could not get CowyoData: %s", err)
 	}
-	return currentText
+	return currentText, vi, isCurrent
 }
 
 func (p *CowyoData) load(title string) error {

main.go

@@ -64,7 +64,7 @@ Options:`)
 
 	var q CowyoData
 	q.load("SpikySeaSlug2")
-	rebuildTexts(q)
+	fmt.Println(getImportantVersions(q))
 
 	r := gin.Default()
 	r.LoadHTMLGlob(path.Join(RuntimeArgs.SourcePath, "templates/*"))

routes.go

@@ -34,14 +34,29 @@ func editNote(c *gin.Context) {
 		if locked {
 			c.Redirect(302, "/"+title+"/view")
 		} else {
-			currentText := getCurrentText(title)
+			version := c.DefaultQuery("version", "-1")
+			versionNum, _ := strconv.Atoi(version)
+			currentText, versions, currentVersion := getCurrentText(title, versionNum)
 			numRows := len(strings.Split(currentText, "\n")) + 10
+			if currentVersion {
 				c.HTML(http.StatusOK, "index.tmpl", gin.H{
 					"Title":       title,
 					"ExternalIP":  RuntimeArgs.ExternalIP,
 					"CurrentText": currentText,
 					"NumRows":     numRows,
+					"Versions":    versions,
 				})
+			} else {
+				c.HTML(http.StatusOK, "index.tmpl", gin.H{
+					"Title":       title,
+					"ExternalIP":  RuntimeArgs.ExternalIP,
+					"CurrentText": currentText,
+					"NumRows":     numRows,
+					"Versions":    versions,
+					"NoEdit":      true,
+				})
+			}
+
 		}
 	}
 }

templates/index.tmpl

@@ -9,7 +9,8 @@
 
 
   <script src="/static/js/jquery.autogrowtextarea.min.js"></script>
-  <script src="/static/js/cowyo.js"></script>
+  {{if .NoEdit}} {{else}} <script src="/static/js/cowyo.js"></script>  {{end}}
+
   <script>
     external_ip = '{{ .ExternalIP }}'
     title_name = '{{ .Title }}'
@@ -31,14 +32,13 @@
       box-shadow: none;
       font-family: Tahoma, sans-serif;
     }
+
     body {
       margin: 0;
       background: #fff;
       max-width: 800px;
       margin: 0 auto;
     }
-
-
   </style>
 
 
@@ -59,7 +59,17 @@
       </div>
       <div id="navbar" class="collapse navbar-collapse">
         <ul class="nav navbar-nav">
-          <li class="active"><a href="/{{ .Title }}">Edit</a></li>
+          <li class="dropdown">
+            <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false"  class="active">Edit <span class="caret"></span></a>
+            <ul class="dropdown-menu">
+              <li class="dropdown-header">Previous versions</li>
+              <li><a href="/{{ .Title }}?version=0">First</a></li>
+              {{ range .Versions }}
+              <li><a href="/{{ $.Title }}?version={{ .VersionNum }}">{{ .VersionDate }}</a></li>
+              {{ end }}
+              <li><a href="/{{ .Title }}">Current</a></li>
+            </ul>
+          </li>
           <li><a href="/{{ .Title }}/view">View</a></li>
           <li><a href="/{{ .Title }}/list">List</a></li>
           <li><a href="/about/view">About</a></li>