Add API to allow creating posts

api.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+func apiPostCreate(w http.ResponseWriter, r *http.Request) {
+	defer func() {
+		_ = r.Body.Close()
+	}()
+	post := &Post{}
+	err := json.NewDecoder(r.Body).Decode(post)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+	err = createPost(post)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+	w.Header().Set("Location", post.Path)
+	w.WriteHeader(http.StatusCreated)
+}

http.go

@@ -17,8 +17,10 @@ import (
 
 const contentTypeHTML = "text/html"
 
+var d *dynamicHandler
+
 func startServer() error {
-	d := newDynamicHandler()
+	d = newDynamicHandler()
 	h, err := buildHandler()
 	if err != nil {
 		return err
@@ -49,6 +51,15 @@ func startServer() error {
 	return nil
 }
 
+func reloadRouter() error {
+	h, err := buildHandler()
+	if err != nil {
+		return err
+	}
+	d.swapHandler(h)
+	return nil
+}
+
 func buildHandler() (http.Handler, error) {
 	r := chi.NewRouter()
 
@@ -60,6 +71,11 @@ func buildHandler() (http.Handler, error) {
 	r.Use(middleware.StripSlashes)
 	r.Use(middleware.GetHead)
 
+	r.Route("/api", func(apiRouter chi.Router) {
+		// TODO: Auth
+		apiRouter.Post("/post", apiPostCreate)
+	})
+
 	allPostPaths, err := allPostPaths()
 	if err != nil {
 		return nil, err

posts.go

@@ -5,16 +5,17 @@ import (
 	"database/sql"
 	"errors"
 	"net/http"
+	"strings"
 )
 
 var errPostNotFound = errors.New("post not found")
 
 type Post struct {
-	Path       string
-	Content    string
-	Published  string
-	Updated    string
-	Parameters map[string]string
+	Path       string            `json:"path"`
+	Content    string            `json:"content"`
+	Published  string            `json:"published"`
+	Updated    string            `json:"updated"`
+	Parameters map[string]string `json:"parameters"`
 }
 
 func servePost(w http.ResponseWriter, r *http.Request) {
@@ -74,3 +75,35 @@ func allPostPaths() ([]string, error) {
 	}
 	return postPaths, nil
 }
+
+func createPost(post *Post) error {
+	if post == nil {
+		return nil
+	}
+	if post.Path == "" || !strings.HasPrefix(post.Path, "/") {
+		return errors.New("wrong path")
+	}
+	startWritingToDb()
+	tx, err := appDb.Begin()
+	if err != nil {
+		return err
+	}
+	_, err = tx.Exec("insert into posts (path, content, published, updated) values (?, ?, ?, ?)", post.Path, post.Content, post.Published, post.Updated)
+	if err != nil {
+		_ = tx.Rollback()
+		return err
+	}
+	for param, value := range post.Parameters {
+		_, err = tx.Exec("insert into post_parameters (path, parameter, value) values (?, ?, ?)", post.Path, param, value)
+		if err != nil {
+			_ = tx.Rollback()
+			return err
+		}
+	}
+	err = tx.Commit()
+	if err != nil {
+		return err
+	}
+	finishWritingToDb()
+	return reloadRouter()
+}