/
slark.go
115 lines (95 loc) · 2.45 KB
/
slark.go
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package slark
import (
"context"
"io/ioutil"
"log"
"net/http"
"os"
"path"
"reflect"
"github.com/jmoiron/sqlx"
"fmt"
"github.com/emostafa/garson"
"gopkg.in/yaml.v2"
)
var models map[string]*Model
var router *garson.Router
var config *Config
type Config struct {
Route string `yaml:"route"`
DBConnectionString string `yaml:"db_connection_string"`
DBDriver string `yaml:"db_driver"`
}
func connectDB() (*sqlx.DB, error) {
db, err := sqlx.Connect(config.DBDriver, config.DBConnectionString)
return db, err
}
func readConfigFile() (*Config, error) {
wd, err := os.Getwd()
if err != nil {
return nil, err
}
data, err := ioutil.ReadFile(path.Join(wd, "slark.yaml"))
conf := &Config{}
err = yaml.Unmarshal(data, conf)
if err != nil {
return nil, err
}
return conf, nil
}
func init() {
models = make(map[string]*Model)
router = garson.New()
con, err := readConfigFile()
if err != nil {
log.Fatal(err)
}
config = con
log.Println(config)
db, err := connectDB()
if err != nil {
log.Fatal(err)
}
router.Get(fmt.Sprintf("/%s", config.Route), index(db))
router.Get(fmt.Sprintf("/%s/:model", config.Route), list(db))
router.Get(fmt.Sprintf("/%s/:model/new", config.Route), getCreate(db))
router.Get(fmt.Sprintf("/%s/:model/edit/:id", config.Route), getUpdate(db))
router.Get(fmt.Sprintf("/%s/:model/:id", config.Route), read(db))
router.Post(fmt.Sprintf("/%s/:model", config.Route), postCreate(db))
router.Post(fmt.Sprintf("/%s/:model/edit/:id", config.Route), postUpdate(db))
router.Delete(fmt.Sprintf("/%s/:model/:id", config.Route), delete(db))
}
// Handle handles http requests
func Handle(w http.ResponseWriter, r *http.Request) {
defer func() {
recover()
}()
handle, params, err := router.Try(r.URL.Path, r.Method)
if err != nil {
http.NotFound(w, r)
}
ctx := context.WithValue(r.Context(), "route_params", params)
r = r.WithContext(ctx)
handle(w, r)
}
// Register registers a given model to slark
func Register(model interface{}, table string) {
m := &Model{}
m.OriginalModel = model
m.TableName = table
// get the fields on the model struct
if t := reflect.TypeOf(model); t.Kind() == reflect.Ptr {
m.Name = t.Elem().Name()
m.Reflection = t
}
v := reflect.ValueOf(model).Elem()
m.Fields = make([]Field, v.NumField())
for i := 0; i < v.NumField(); i++ {
tag := v.Type().Field(i).Tag
f := Field{}
f.Name = tag.Get("db")
f.DBType = tag.Get("type")
m.Fields[i] = f
}
models[m.Name] = m
}