From 70a2ced31313190d541b4bdacdd34f4231652990 Mon Sep 17 00:00:00 2001
From: Meutel <meutel@meutel.net>
Date: Mon, 31 Jul 2017 20:49:27 +0200
Subject: [PATCH] JSON response

---
 bouquins/bouquins.go | 79 +++++++++++++++++++++++++-------------------
 1 file changed, 45 insertions(+), 34 deletions(-)

diff --git a/bouquins/bouquins.go b/bouquins/bouquins.go
index a7c740f..e63f963 100644
--- a/bouquins/bouquins.go
+++ b/bouquins/bouquins.go
@@ -2,6 +2,7 @@ package bouquins
 
 import (
 	"database/sql"
+	"encoding/json"
 	"html/template"
 	"log"
 	"net/http"
@@ -31,26 +32,26 @@ type Bouquins struct {
  * A book series.
  */
 type Series struct {
-	Id   int64
-	Name string
+	Id   int64  `json:"id,omitempty"`
+	Name string `json:"name,omitempty"`
 }
 
 /*
  * A book. Generic data.
  */
 type Book struct {
-	Id          int64
-	Title       string
-	SeriesIndex int
-	Series      *Series
+	Id          int64   `json:"id,omitempty"`
+	Title       string  `json:"title,omitempty"`
+	SeriesIndex int     `json:"series_idx,omitempty"`
+	Series      *Series `json:"series,omitempty"`
 }
 
 /*
  * An author.
  */
 type Author struct {
-	Id   int64
-	Name string
+	Id   int64  `json:"id,omitempty"`
+	Name string `json:"name,omitempty"`
 }
 
 /*
@@ -58,16 +59,16 @@ type Author struct {
  */
 type AuthorAdv struct {
 	Author
-	Count int
+	Count int `json:"count,omitempty"`
 }
 
 /*
  * Downloadable book data.
  */
 type BookData struct {
-	Size   int64
-	Format string
-	Name   string
+	Size   int64  `json:"size,omitempty"`
+	Format string `json:"format,omitempty"`
+	Name   string `json:"name,omitempty"`
 }
 
 /*
@@ -75,42 +76,42 @@ type BookData struct {
  */
 type BookAdv struct {
 	Book
-	Authors []*Author
-	Tags    []string
+	Authors []*Author `json:"authors,omitempty"`
+	Tags    []string  `json:"tags,omitempty"`
 }
 
 type AuthorFull struct {
 	Author
-	Books []*BookAdv
+	Books []*BookAdv `json:"books,omitempty"`
 }
 
 type BookFull struct {
 	BookAdv
-	Data      []BookData
-	Timestamp int64
-	Pubdate   int64
-	Isbn      string
-	Lccn      string
-	Path      string
-	Uuid      string
-	Has_cover bool
-	Lang      string
-	Publisher string
+	Data      []BookData `json:"data,omitempty"`
+	Timestamp int64      `json:"timestamp,omitempty"`
+	Pubdate   int64      `json:"pubdate,omitempty"`
+	Isbn      string     `json:"isbn,omitempty"`
+	Lccn      string     `json:"lccn,omitempty"`
+	Path      string     `json:"path,omitempty"`
+	Uuid      string     `json:"uuid,omitempty"`
+	Has_cover bool       `json:"has_cover,omitempty"`
+	Lang      string     `json:"lang,omitempty"`
+	Publisher string     `json:"publisher,omitempty"`
 }
 
 type SeriesAdv struct {
 	Series
-	Count   int64
-	Authors []*Author
+	Count   int64     `json:"count,omitempty"`
+	Authors []*Author `json:"authors,omitempty"`
 }
 
 type SeriesFull struct {
 	SeriesAdv
-	Books []*Book
+	Books []*Book `json:"books,omitempty"`
 }
 
 type BouquinsModel struct {
-	Title string
+	Title string `json:"title,omitempty"`
 }
 
 // Constructor BouquinsModel
@@ -122,10 +123,10 @@ func NewBouquinsModel(title string) *BouquinsModel {
 
 type IndexModel struct {
 	BouquinsModel
-	BooksCount int64
-	Books      []*BookAdv
-	Series     []*SeriesAdv
-	Authors    []*AuthorAdv
+	BooksCount int64        `json:"count"`
+	Books      []*BookAdv   `json:"books,omitempty"`
+	Series     []*SeriesAdv `json:"series,omitempty"`
+	Authors    []*AuthorAdv `json:"authors,omitempty"`
 }
 
 // Constructor IndexModel
@@ -168,7 +169,17 @@ func (app *Bouquins) IndexPage(res http.ResponseWriter, req *http.Request) {
 	if err != nil {
 		log.Print(err)
 	}
-	app.render(res, TPL_INDEX, model)
+	if req.Header.Get("Accept") == "application/json" {
+		res.Header().Set("Content-Type", "application/json")
+		enc := json.NewEncoder(res)
+		err := enc.Encode(model)
+		if err != nil {
+			log.Println(err)
+			http.Error(res, err.Error(), 500)
+		}
+	} else {
+		app.render(res, TPL_INDEX, model)
+	}
 }
 func (app *Bouquins) BooksPage(res http.ResponseWriter, req *http.Request) {
 	app.render(res, TPL_BOOKS, nil)