Solution for the exercise (#9)

* Add handler to the route * Move to students directory * fix template format * Update redirect to template execution
gophercises · Jul 22, 2019 · c897e0f · c897e0f
1 parent d78996c
commit c897e0f
Show file tree

Hide file tree

Showing 6 changed files with 162 additions and 1 deletion.
diff --git a/.gitignore b/.gitignore
@@ -12,5 +12,5 @@
 
 # Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
 .glide/
-
 tmp/
+.idea/
diff --git a/students/cherednichenkoa/main.go b/students/cherednichenkoa/main.go
@@ -0,0 +1,26 @@
+package main
+
+import (
+	"flag"
+	"gopherex/cyoa/students/cherednichenkoa/route-handler"
+	"gopherex/cyoa/students/cherednichenkoa/settings"
+)
+
+const (
+	storyTemplate = "cherednichenkoa/templates/story.html"
+)
+
+var (
+	filePath = flag.String("filePath","","path to the story source file")
+	listenPort = flag.String("listenPort","","port number that app will listen")
+)
+
+func main()  {
+	flag.Parse()
+	if len(*listenPort) == 0 || len(*filePath) == 0 {
+		panic("Please specify application params (listenPort and filePath)")
+	}
+	config := settings.Settings{FilePath: *filePath, ListenPort: *listenPort, TemplatePath: storyTemplate}
+	handler := route_handler.RouteHandler{Settings: config}
+	handler.ServeRequests()
+}
diff --git a/students/cherednichenkoa/route-handler/route_handler.go b/students/cherednichenkoa/route-handler/route_handler.go
@@ -0,0 +1,52 @@
+package route_handler
+
+import (
+	"gopherex/cyoa/students/cherednichenkoa/settings"
+	"gopherex/cyoa/students/cherednichenkoa/source"
+	"html/template"
+	"net/http"
+	"strings"
+)
+
+const (
+	defaultStory = "intro"
+)
+
+type RouteHandler struct {
+	Settings settings.Settings
+}
+
+func (rh *RouteHandler) ServeRequests() {
+	fileHandler := source.JsonFileHandler{Settings: rh.Settings}
+	fileContent, err := fileHandler.GetFileContent()
+	if err != nil {
+		panic(err)
+	}
+	urlHandler := rh.getMapHandler(fileContent)
+	http.HandleFunc("/", urlHandler)
+	http.ListenAndServe(rh.getPort(), nil)
+}
+
+func (rh *RouteHandler) getMapHandler(stories map[string]source.StoryDetails) http.HandlerFunc {
+	return func(w http.ResponseWriter, req *http.Request) {
+		tmpl := template.Must(template.ParseFiles(rh.Settings.GetTemplatePath()))
+		path := rh.prepareUrl(req)
+		story, ok := stories[path]
+		if ok {
+			tmpl.Execute(w, story)
+			return
+		}
+
+		tmpl.Execute(w, stories[defaultStory])
+	}
+}
+
+func (rh *RouteHandler) getPort() string {
+	port := ":" + rh.Settings.GetListenPort()
+	return port
+}
+
+func (rh *RouteHandler) prepareUrl(req *http.Request) string {
+	path := strings.Trim(req.URL.Path,"/")
+	return path
+}
diff --git a/students/cherednichenkoa/settings/settings.go b/students/cherednichenkoa/settings/settings.go
@@ -0,0 +1,19 @@
+package settings
+
+type Settings struct {
+	FilePath string
+	ListenPort string
+	TemplatePath string
+}
+
+func (conf *Settings) GetFilePath() string {
+	return conf.FilePath
+}
+
+func (conf *Settings) GetListenPort() string {
+	return conf.ListenPort
+}
+
+func (conf *Settings) GetTemplatePath() string {
+	return conf.TemplatePath
+}
diff --git a/students/cherednichenkoa/source/json_file.go b/students/cherednichenkoa/source/json_file.go
@@ -0,0 +1,36 @@
+package source
+
+import (
+	"encoding/json"
+	"fmt"
+	"gopherex/cyoa/students/cherednichenkoa/settings"
+	"io/ioutil"
+)
+
+type JsonFileHandler struct  {
+	Settings settings.Settings
+}
+
+func (fh *JsonFileHandler) GetFileContent () (map[string]StoryDetails, error) {
+	file, err := ioutil.ReadFile(fh.Settings.GetFilePath())
+	if err != nil {
+		fmt.Println("Error during json file reading.")
+		panic(err)
+	}
+	var out map[string]StoryDetails
+	if err := json.Unmarshal(file, &out); err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+type StoryOption struct {
+	Text      string `json:"text"`
+	Arc string `json:"arc"`
+}
+
+type StoryDetails struct {
+	Title string `json:"title"`
+	Story []string  `json:"story"`
+	Options []StoryOption `json:"options"`
+}
diff --git a/students/cherednichenkoa/templates/story.html b/students/cherednichenkoa/templates/story.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>{{.Title}}</title>
+</head>
+<body>
+    <h1>{{.Title}}</h1>
+    <div class="story-content">
+        {{range .Story}}
+            <p>{{.}}</p>
+        {{end}}
+    </div>
+    <div class="variations-links">
+        {{if .Options }}
+            <ul>
+                {{range .Options}}
+                    <li class="link-container">
+                        <a href="{{.Arc}}">{{.Text}}</a>
+                    </li>
+                {{end}}
+            </ul>
+        {{else}}
+            <p ><b>The End !</b></p>
+        {{end}}
+    </div>
+</body>
+</html>
-Original file line number
+Diff line change
@@ Expand Up / @@ -12,5 +12,5 @@ @@
     # Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
     .glide/
     tmp/
+    .idea/