Add static files, encryption

Former-commit-id: 80a53c01301cf96c28a22e1018efac2ceca7a381 [formerly af1c7ae599f506fcceebc85f87cc345e76329da3] [formerly 1bf3deab458c0e1f376da2296b03ac4fe8fcf8e9 [formerly 5a923ae11a]]
Former-commit-id: e826a5ffd431d22f8c37ac51f1be2193de1c270f [formerly 1deadc5e9c4fc7ff98b48bba18be31b773b8bde7]
Former-commit-id: 7fc964bb4c9d007010b1bb52665818212c0a2a8c

main.go

@@ -5,12 +5,14 @@ import (
 	"net/http"
 	"strconv"
 
+	"github.com/gin-contrib/static"
 	"github.com/gin-gonic/gin"
 )
 
 func main() {
 	router := gin.Default()
 	router.LoadHTMLGlob("templates/*")
+	router.Use(static.Serve("/static/", static.LocalFile("./static", true)))
 
 	router.GET("/", func(c *gin.Context) {
 		c.Redirect(302, "/"+randomAlliterateCombo())
@@ -23,6 +25,7 @@ func main() {
 	router.POST("/update", handlePageUpdate)
 	router.POST("/prime", handlePrime)
 	router.POST("/lock", handleLock)
+	router.POST("/encrypt", handleEncrypt)
 
 	router.Run(":8050")
 }
@@ -78,13 +81,17 @@ func handlePageUpdate(c *gin.Context) {
 	}
 	log.Trace("Update: %v", json)
 	p := Open(json.Page)
-	if !p.IsLocked {
+	var message string
+	if p.IsLocked {
+		message = "Locked"
+	} else if p.IsEncrypted {
+		message = "Encrypted"
+	} else {
 		p.Update(json.NewText)
 		p.Save()
-		c.JSON(http.StatusOK, gin.H{"success": true, "message": "Saved"})
-	} else {
-		c.JSON(http.StatusOK, gin.H{"success": false, "message": "Locked"})
+		message = "Saved"
 	}
+	c.JSON(http.StatusOK, gin.H{"success": false, "message": message})
 }
 
 func handlePrime(c *gin.Context) {
@@ -132,3 +139,39 @@ func handleLock(c *gin.Context) {
 	p.Save()
 	c.JSON(http.StatusOK, gin.H{"success": true, "message": message})
 }
+
+func handleEncrypt(c *gin.Context) {
+	type QueryJSON struct {
+		Page       string `json:"page"`
+		Passphrase string `json:"passphrase"`
+	}
+
+	var json QueryJSON
+	if c.BindJSON(&json) != nil {
+		c.String(http.StatusBadRequest, "Problem binding keys")
+		return
+	}
+	p := Open(json.Page)
+	var message string
+	if p.IsEncrypted {
+		decrypted, err2 := DecryptString(p.Text.GetCurrent(), json.Passphrase)
+		if err2 != nil {
+			c.JSON(http.StatusOK, gin.H{"success": false, "message": "Wrong password"})
+			return
+		}
+		p.IsEncrypted = false
+		p.Erase()
+		p = Open(json.Page)
+		p.Update(decrypted)
+		message = "Decrypted"
+	} else {
+		p.IsEncrypted = true
+		p.Erase()
+		p = Open(json.Page)
+		encrypted, _ := EncryptString(p.Text.GetCurrent(), json.Passphrase)
+		p.Update(encrypted)
+		message = "Encrypted"
+	}
+	p.Save()
+	c.JSON(http.StatusOK, gin.H{"success": true, "message": message})
+}