feat(page): add Page action endpoints

internal/database/svgdb.go

@@ -15,6 +15,7 @@ const GETSPECIFICSVGSQL string = "SELECT * FROM svg WHERE id = ?;"
 const GETSVGSQL string = "SELECT * FROM svg;"
 const DELETESVGSQL string = "DELETE FROM svg WHERE id = ?;"
 const RENAMESVGSQL string = "UPDATE svg SET name = ? WHERE id = ?;"
+const EXISTSSVGSQL string = "SELECT COUNT(*) FROM svg WHERE id = ?;"
 
 func InsertSVG(data *svg.TemplateData) error {
 	if _, err := database.Exec(INSERTSVGSQL, data.Id, data.Name); err != nil {
@@ -93,3 +94,15 @@ func RenameSvg(id string, name string) error {
 	}
 	return nil
 }
+
+func Exists(id string) (bool, error) {
+	res := database.QueryRow(EXISTSSVGSQL, id)
+
+	var count int
+
+	if err := res.Scan(&count); err != nil {
+		return false, err
+	}
+
+	return count > 0, nil
+}

internal/database/svgpagedb.go

@@ -27,6 +27,7 @@ const GETSPECIFICSVGPAGESSQL string = "SELECT * FROM svgpage WHERE id = ?;"
 const DELETESVGPAGESQL string = "DELETE FROM svgpage WHERE id = ? AND page = ?;"
 const DELETEALLSVGPAGESQL string = "DELETE FROM svgpage WHERE id = ?;"
 const COUNTSVGPAGESQL string = "SELECT COUNT(*) FROM svgpage WHERE id = ?;"
+const UPDATEPAGESQL string = "UPDATE svgpage SET page = page - 1 WHERE page > ?;"
 
 func InsertSVGPage(data *svg.TemplatePage) (int, error) {
 	json, err := json.Marshal(data.TemplateKeys)
@@ -86,6 +87,11 @@ func DeleteSVGPage(id string, page int) (bool, error) {
 	if num == 0 {
 		return false, nil
 	}
+
+	if err := movePages(id, page); err != nil {
+		return false, err
+	}
+
 	return true, nil
 }
 
@@ -116,3 +122,8 @@ func GetPageCount(id string) (int, error) {
 
 	return count, nil
 }
+
+func movePages(id string, deletedPage int) error {
+	_, err := database.Exec(UPDATEPAGESQL, deletedPage)
+	return err
+}

internal/routes/pages.go

@@ -0,0 +1,80 @@
+package routes
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"strconv"
+
+	"tomatentum.net/svg-templater/pkg/svg"
+	"tomatentum.net/svg-templater/pkg/svg/actions"
+)
+
+func AddPage(w http.ResponseWriter, r *http.Request) {
+	if err := r.ParseMultipartForm(128000000); err != nil {
+		http.Error(w, "Couldn't parse form data.", http.StatusBadRequest)
+		return
+	}
+
+	fileheaders := r.MultipartForm.File["files"]
+
+	id := r.PathValue("id")
+
+	pages := make([]svg.TemplatePage, len(fileheaders))
+
+	for i, fileh := range fileheaders {
+		file, err := fileh.Open()
+
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusBadRequest)
+			return
+		}
+
+		buf, err := io.ReadAll(file)
+
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusBadRequest)
+			return
+		}
+
+		page, err := actions.AddPage(id, buf)
+
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		pages[i] = page
+	}
+
+	err := json.NewEncoder(w).Encode(pages)
+
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+}
+
+func DeletePage(w http.ResponseWriter, r *http.Request) {
+
+	id, pagestring := r.PathValue("id"), r.PathValue("page")
+
+	page, err := strconv.Atoi(pagestring)
+
+	if err != nil {
+		http.Error(w, "Page must be a number", http.StatusBadRequest)
+		return
+	}
+
+	ok, err := actions.DeletePage(id, page)
+
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	if !ok {
+		http.Error(w, "Could not delete page", http.StatusInternalServerError)
+		return
+	}
+}

internal/server/http.go

@@ -43,6 +43,22 @@ func PrepareHTTP() {
 		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
 
 	})
+
+	registerAuthorizedFunc("/svg/{id}/page/", func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != "POST" {
+			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+			return
+		}
+		routes.AddPage(w, r)
+	})
+
+	registerAuthorizedFunc("/svg/{id}/page/{page}", func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != "DELETE" {
+			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+			return
+		}
+		routes.DeletePage(w, r)
+	})
 	registerAuthorizedFunc("/font/", func(w http.ResponseWriter, r *http.Request) {
 		switch r.Method {
 		case "GET":

pkg/svg/actions/page.go

@@ -2,6 +2,7 @@ package actions
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"io"
 	"log"
@@ -15,6 +16,17 @@ import (
 const FILEFORMAT string = "%s-%d"
 
 func AddPage(id string, svgbuf []byte) (svg.TemplatePage, error) {
+
+	exists, err := database.Exists(id)
+
+	if err != nil {
+		return svg.TemplatePage{}, err
+	}
+
+	if !exists {
+		return svg.TemplatePage{}, errors.New("Template does not exist.")
+	}
+
 	data := svg.TemplatePage{TemplateId: id}
 	populateKeys(&data, svgbuf)
 

pkg/svg/actions/upload.go

@@ -10,11 +10,15 @@ import (
 )
 
 func Create(svgbufs [][]byte, name string) (svg.TemplateData, error) {
-	id := generateId()
+	data := svg.TemplateData{Id: generateId(), Name: name}
+
+	if err := database.InsertSVG(&data); err != nil {
+		return svg.TemplateData{}, err
+	}
 
 	pages := make([]svg.TemplatePage, len(svgbufs))
 	for i, pagebuf := range svgbufs {
-		page, err := AddPage(id, pagebuf)
+		page, err := AddPage(data.Id, pagebuf)
 
 		if err != nil {
 			return svg.TemplateData{}, err
@@ -23,11 +27,7 @@ func Create(svgbufs [][]byte, name string) (svg.TemplateData, error) {
 		pages[i] = page
 	}
 
-	data := svg.TemplateData{Id: id, Name: name, Pages: pages}
-
-	if err := database.InsertSVG(&data); err != nil {
-		return svg.TemplateData{}, err
-	}
+	data.Pages = pages
 
 	log.Println("Created SVG Template " + data.Id)
 	return data, nil