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//
// rhimportd
//
// The Radio Helsinki Rivendell Import Daemon
//
//
// Copyright (C) 2015 Christian Pointner <equinox@helsinki.at>
//
// This file is part of rhimportd.
//
// rhimportd is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// any later version.
//
// rhimportd is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with rhimportd. If not, see <http://www.gnu.org/licenses/>.
//
package rhimport
import (
"bytes"
"fmt"
"io"
"mime/multipart"
"net/http"
"os"
"path"
)
var (
bool2str = map[bool]string{false: "0", true: "1"}
)
type ImportContext struct {
*Config
*RdDb
UserName string
Password string
Trusted bool
ShowId int
GroupName string
Cart int
Cut int
Channels int
NormalizationLevel int
AutotrimLevel int
UseMetaData bool
SourceUri string
SourceFile string
DeleteSourceFile bool
DeleteSourceDir bool
ProgressCallBack func(step int, step_name string, progress float64, userdata interface{})
ProgressCallBackData interface{}
}
func NewImportContext(conf *Config, rddb *RdDb, user string, group string) *ImportContext {
ctx := new(ImportContext)
ctx.Config = conf
ctx.RdDb = rddb
ctx.UserName = user
ctx.Password = ""
ctx.Trusted = false
ctx.ShowId = 0
ctx.GroupName = group
ctx.Cart = 0
ctx.Cut = 0
ctx.Channels = 2
ctx.NormalizationLevel = -1200
ctx.AutotrimLevel = 0
ctx.UseMetaData = false
ctx.SourceFile = ""
ctx.DeleteSourceFile = false
ctx.DeleteSourceDir = false
ctx.ProgressCallBack = nil
return ctx
}
func (ctx *ImportContext) getPassword(cached bool) (err error) {
req := getPasswordRequest{}
req.username = ctx.UserName
req.cached = cached
req.response = make(chan getPasswordResult)
ctx.RdDb.getPasswordChan <- req
res := <-req.response
if res.err != nil {
err = res.err
return
}
ctx.Password = res.password
return
}
func (ctx *ImportContext) getShowInfo() (err error) {
req := getShowInfoRequest{}
req.showid = ctx.ShowId
req.response = make(chan getShowInfoResult)
ctx.RdDb.getShowInfoChan <- req
res := <-req.response
if res.err != nil {
err = res.err
return
}
rhdl.Printf("Title of show %d is '%s'", ctx.ShowId, res.title)
return
}
func send_post_request(url string, b *bytes.Buffer, contenttype string) (err error) {
var req *http.Request
if req, err = http.NewRequest("POST", url, b); err != nil {
return
}
if contenttype != "" {
req.Header.Set("Content-Type", contenttype)
}
client := &http.Client{}
var res *http.Response
if res, err = client.Do(req); err != nil {
return
}
defer res.Body.Close()
if res.StatusCode != http.StatusOK {
// TODO: better error output
err = fmt.Errorf("bad status: %s", res.Status)
}
return
}
func add_cart(ctx *ImportContext) (err error) {
var b bytes.Buffer
w := multipart.NewWriter(&b)
if err = w.WriteField("COMMAND", "12"); err != nil {
return
}
if err = w.WriteField("LOGIN_NAME", ctx.UserName); err != nil {
return
}
if err = w.WriteField("PASSWORD", ctx.Password); err != nil {
return
}
if err = w.WriteField("GRPOUP_NAME", ctx.GroupName); err != nil {
return
}
if err = w.WriteField("TYPE", "audio"); err != nil {
return
}
if ctx.Cart != 0 {
if err = w.WriteField("CART_NUMBER", fmt.Sprintf("%d", ctx.Cart)); err != nil {
return
}
}
w.Close()
return send_post_request(ctx.Config.RDXportEndpoint, &b, w.FormDataContentType())
}
func import_audio(ctx *ImportContext) (err error) {
var b bytes.Buffer
w := multipart.NewWriter(&b)
if err = w.WriteField("COMMAND", "2"); err != nil {
return
}
if err = w.WriteField("LOGIN_NAME", ctx.UserName); err != nil {
return
}
if err = w.WriteField("PASSWORD", ctx.Password); err != nil {
return
}
if err = w.WriteField("CART_NUMBER", fmt.Sprintf("%d", ctx.Cart)); err != nil {
return
}
if err = w.WriteField("CUT_NUMBER", fmt.Sprintf("%d", ctx.Cut)); err != nil {
return
}
if err = w.WriteField("CHANNELS", fmt.Sprintf("%d", ctx.Channels)); err != nil {
return
}
if err = w.WriteField("NORMALIZATION_LEVEL", fmt.Sprintf("%d", ctx.NormalizationLevel)); err != nil {
return
}
if err = w.WriteField("AUTOTRIM_LEVEL", fmt.Sprintf("%d", ctx.AutotrimLevel)); err != nil {
return
}
if err = w.WriteField("USE_METADATA", bool2str[ctx.UseMetaData]); err != nil {
return
}
var f *os.File
var fw io.Writer
if f, err = os.Open(ctx.SourceFile); err != nil {
return
}
if fw, err = w.CreateFormFile("FILENAME", path.Base(ctx.SourceFile)); err != nil {
return
}
if _, err = io.Copy(fw, f); err != nil {
return
}
f.Close()
w.Close()
return send_post_request(ctx.Config.RDXportEndpoint, &b, w.FormDataContentType())
}
func cleanup_files(ctx *ImportContext) {
if ctx.DeleteSourceFile {
rhdl.Printf("importer: removing file: %s", ctx.SourceFile)
if err := os.Remove(ctx.SourceFile); err != nil {
rhl.Printf("importer: error removing source file: %s", err)
return
}
if ctx.DeleteSourceDir {
dir := path.Dir(ctx.SourceFile)
rhdl.Printf("importer: also removing directory: %s", dir)
if err := os.Remove(dir); err != nil {
rhl.Printf("importer: error removing source directory: %s", err)
}
}
}
return
}
func ImportFile(ctx *ImportContext) (err error) {
rhl.Println("ImportFile called for", ctx.SourceFile)
defer cleanup_files(ctx)
if ctx.ProgressCallBack != nil {
ctx.ProgressCallBack(2, "importing", 0.0, ctx.ProgressCallBackData)
}
if ctx.Trusted {
if err = ctx.getPassword(true); err != nil {
return
}
}
if err = import_audio(ctx); err != nil {
return
}
if ctx.ProgressCallBack != nil {
ctx.ProgressCallBack(2, "importing", 1.0, ctx.ProgressCallBackData)
}
rhl.Println("ImportFile succesfully imported", ctx.SourceFile)
return
}
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