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dashboard.go
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dashboard.go
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package apinto_dashboard
import (
"bytes"
"fmt"
"github.com/eolinker/apinto-dashboard/internal/template"
"github.com/eolinker/eosc/log"
"net/http"
"path/filepath"
"strconv"
"strings"
)
type ViewHandlerFunc func(r *http.Request) (view string, data interface{}, err error)
func (f ViewHandlerFunc) Lookup(r *http.Request) (view string, data interface{}, err error) {
return f(r)
}
type Module struct {
Path string
Handler IModule
Name string
I18nName map[ZoneName]string `json:"i18n_name"`
NotView bool
}
type Config struct {
DefaultZone ZoneName
Modules []*Module
UserDetailsService IUserDetailsService
DefaultModule string
}
func Create(config *Config) (http.Handler, error) {
if config.UserDetailsService == nil {
return nil, ErrorUserDetailsServiceNeed
}
if config.DefaultZone == "" {
config.DefaultZone = ZhCn
}
modules := make([]*ModuleItem, 0, len(config.Modules))
for _, m := range config.Modules {
if !m.NotView {
modules = append(modules, &ModuleItem{
Name: m.Name,
I18nName: m.I18nName,
Path: m.Path,
})
}
}
mp := NewModuleItemPlan(modules)
defaultModule := config.DefaultModule
if defaultModule == "" {
defaultModule = modules[0].Name
}
serve := &http.ServeMux{}
for _, m := range config.Modules {
if m.NotView {
serve.Handle(m.Path, m.Handler)
} else {
viewH := &ViewServer{
handler: m.Handler,
modules: mp,
name: m.Name,
}
path := fmt.Sprint("/", m.Name)
serve.Handle(path, viewH)
serve.Handle(fmt.Sprint(path, "/"), viewH)
serve.Handle(fmt.Sprintf("/api/%s/", m.Name), m.Handler)
}
}
staticServe := &http.ServeMux{}
staticServe.Handle("/", http.FileServer(getStaticFiles()))
defaultModulePath := mp.moduleMap[defaultModule].Path
serve.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path == "/" {
http.Redirect(w, r, defaultModulePath, 302)
return
}
staticServe.ServeHTTP(w, r)
})
return NewAccountHandler(config.UserDetailsService, &Views{
serve: serve,
mp: mp,
}, []string{"/css/", "/js/", "/umd/", "/fonts/", "/img/"}), nil
}
var viewExtHtml = map[string]int{
".html": 1,
".htm": 1,
"": 1,
}
type Views struct {
serve http.Handler
mp *ModuleItemPlan
}
func (v *Views) ServeHTTP(w http.ResponseWriter, req *http.Request) {
cache := NewTemplateWriter()
v.serve.ServeHTTP(cache, req)
codeHead := cache.statusCode / 100
if codeHead == 4 || codeHead == 5 {
if !strings.HasPrefix(req.URL.Path, "/api/") && !strings.HasPrefix(req.URL.Path, "/profession/") {
ext := filepath.Ext(req.URL.Path)
if viewExtHtml[ext] == 1 {
v.Error(w, cache)
return
}
}
}
cache.WriteTo(w)
}
func (v *Views) Error(w http.ResponseWriter, cache *TemplateWriter) {
template.Execute(w, "error", v.mp.CreateViewData("error", map[string]string{"statusCode": strconv.Itoa(cache.statusCode), "message": cache.buf.String()}, nil, nil))
}
type ViewServer struct {
handler ViewLookup
modules *ModuleItemPlan
name string
}
func (v *ViewServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
log.Debug("request:", r.RequestURI)
viewName, data, has := v.handler.Lookup(r)
if !has {
http.NotFound(w, r)
return
}
userDetails, _ := UserDetailsFromRequest(r)
template.Execute(w, viewName, v.modules.CreateViewData(v.name, data, nil, userDetails))
}
type ModuleItem struct {
Name string `json:"name"`
I18nName map[ZoneName]string `json:"i18n_name"`
Path string `json:"path"`
}
type ModuleItemPlan struct {
modules []*ModuleItem
moduleMap map[string]*ModuleItem
}
func NewModuleItemPlan(modules []*ModuleItem) *ModuleItemPlan {
mp := make(map[string]*ModuleItem)
for _, m := range modules {
mp[m.Name] = m
}
return &ModuleItemPlan{modules: modules, moduleMap: mp}
}
func (mp *ModuleItemPlan) CreateViewData(name string, data interface{}, err error, user UserDetails) map[string]interface{} {
obj := make(map[string]interface{})
obj["data"] = data
obj["error"] = err
obj["zone"] = ZhCn
obj["modules"] = mp.modules
obj["module"] = mp.moduleMap[name]
obj["name"] = name
obj["user"] = user
return obj
}
type TemplateWriter struct {
buf bytes.Buffer
statusCode int
header http.Header
}
func NewTemplateWriter() *TemplateWriter {
return &TemplateWriter{
statusCode: 200,
header: make(http.Header),
}
}
func (t *TemplateWriter) WriteTo(w http.ResponseWriter) {
t.WriteHeaderTo(w)
w.WriteHeader(t.statusCode)
//w.Write(t.buf.Bytes())
t.buf.WriteTo(w)
}
func (t *TemplateWriter) WriteHeaderTo(w http.ResponseWriter) {
for k := range t.header {
w.Header().Set(k, t.header.Get(k))
}
}
func (t *TemplateWriter) Header() http.Header {
return t.header
}
func (t *TemplateWriter) Write(bytes []byte) (int, error) {
return t.buf.Write(bytes)
}
func (t *TemplateWriter) WriteHeader(statusCode int) {
t.statusCode = statusCode
}