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|
package api
import (
"bytes"
"encoding/json"
"log"
"net/http"
"github.com/nilslice/cms/content"
"github.com/nilslice/cms/system/db"
)
func init() {
http.HandleFunc("/api/types", func(res http.ResponseWriter, req *http.Request) {
var types = []string{}
for t := range content.Types {
types = append(types, string(t))
}
j, err := toJSON(types)
if err != nil {
res.WriteHeader(http.StatusInternalServerError)
return
}
res.Header().Set("Content-Type", "application/json")
res.Write(j)
})
http.HandleFunc("/api/posts", func(res http.ResponseWriter, req *http.Request) {
q := req.URL.Query()
t := q.Get("type")
// TODO: implement pagination
// num := q.Get("num")
// page := q.Get("page")
if t == "" {
res.WriteHeader(http.StatusBadRequest)
return
}
posts := db.GetAll(t)
var all = []json.RawMessage{}
for _, post := range posts {
all = append(all, post)
}
j, err := fmtJSON(all...)
if err != nil {
res.WriteHeader(http.StatusInternalServerError)
return
}
res.Header().Set("Content-Type", "application/json")
res.Write(j)
})
http.HandleFunc("/api/post", func(res http.ResponseWriter, req *http.Request) {
q := req.URL.Query()
id := q.Get("id")
t := q.Get("type")
if t == "" || id == "" {
res.WriteHeader(http.StatusBadRequest)
return
}
post, err := db.Get(t + ":" + id)
if err != nil {
res.WriteHeader(http.StatusInternalServerError)
return
}
j, err := fmtJSON(json.RawMessage(post))
if err != nil {
res.WriteHeader(http.StatusInternalServerError)
return
}
res.Header().Set("Content-Type", "application/json")
res.Write(j)
})
}
func fmtJSON(data ...json.RawMessage) ([]byte, error) {
var msg = []json.RawMessage{}
for _, d := range data {
msg = append(msg, d)
}
resp := map[string][]json.RawMessage{
"data": msg,
}
var buf = &bytes.Buffer{}
enc := json.NewEncoder(buf)
err := enc.Encode(resp)
if err != nil {
log.Println("Failed to encode data to JSON:", err)
return nil, err
}
return buf.Bytes(), nil
}
func toJSON(data []string) ([]byte, error) {
var buf = &bytes.Buffer{}
enc := json.NewEncoder(buf)
resp := map[string][]string{
"data": data,
}
err := enc.Encode(resp)
if err != nil {
log.Println("Failed to encode data to JSON:", err)
return nil, err
}
return buf.Bytes(), nil
}
func wrapJSON(json []byte) []byte {
var buf = &bytes.Buffer{}
buf.Write([]byte("{data:"))
buf.Write(json)
buf.Write([]byte("}"))
return buf.Bytes()
}
// Run start the JSON API
func Run(port string) {
log.Fatal(http.ListenAndServe(":"+port, nil))
}
|
