From 036e7a314729bb473998127f0ad20d7e1c3b7709 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Sun, 13 Dec 2015 05:02:43 +0100
Subject: music pool group check works now


diff --git a/importer.go b/importer.go
index 95f61f7..8206082 100644
--- a/importer.go
+++ b/importer.go
@@ -97,7 +97,13 @@ func (ctx *ImportContext) SanityCheck() error {
 		return nil
 	}
 	if ctx.GroupName != "" {
-		// TODO: check if GroupName is a music pool -> Error if not
+		ismusic, err := ctx.checkMusicGroup()
+		if err != nil {
+			return err
+		}
+		if !ismusic {
+			return fmt.Errorf("supplied GroupName is not a music pool")
+		}
 		return nil
 	}
 	if ctx.Cart == 0 {
@@ -118,14 +124,13 @@ func (ctx *ImportContext) getPassword(cached bool) (err error) {
 
 	res := <-req.response
 	if res.err != nil {
-		err = res.err
-		return
+		return res.err
 	}
 	ctx.Password = res.password
-	return
+	return nil
 }
 
-func (ctx *ImportContext) getGroupOfCart() (err error) {
+func (ctx *ImportContext) getGroupOfCart() error {
 	req := getGroupOfCartRequest{}
 	req.cart = ctx.Cart
 	req.response = make(chan getGroupOfCartResult)
@@ -133,11 +138,10 @@ func (ctx *ImportContext) getGroupOfCart() (err error) {
 
 	res := <-req.response
 	if res.err != nil {
-		err = res.err
-		return
+		return res.err
 	}
 	ctx.GroupName = res.group
-	return
+	return nil
 }
 
 func (ctx *ImportContext) getShowInfo() (err error) {
@@ -155,6 +159,19 @@ func (ctx *ImportContext) getShowInfo() (err error) {
 	return
 }
 
+func (ctx *ImportContext) checkMusicGroup() (bool, error) {
+	req := checkMusicGroupRequest{}
+	req.group = ctx.GroupName
+	req.response = make(chan checkMusicGroupResult)
+	ctx.RdDb.checkMusicGroupChan <- req
+
+	res := <-req.response
+	if res.err != nil {
+		return false, res.err
+	}
+	return res.ismusic, nil
+}
+
 type ImportResult struct {
 	ResponseCode int
 	ErrorString  string
diff --git a/rddb.go b/rddb.go
index 85a3177..52d6e18 100644
--- a/rddb.go
+++ b/rddb.go
@@ -62,17 +62,29 @@ type getShowInfoRequest struct {
 	response chan getShowInfoResult
 }
 
+type checkMusicGroupResult struct {
+	ismusic bool
+	err     error
+}
+
+type checkMusicGroupRequest struct {
+	group    string
+	response chan checkMusicGroupResult
+}
+
 type RdDb struct {
-	dbh                *sql.DB
-	password_cache     map[string]string
-	getPasswordChan    chan getPasswordRequest
-	getPasswordStmt    *sql.Stmt
-	getGroupOfCartChan chan getGroupOfCartRequest
-	getGroupOfCartStmt *sql.Stmt
-	getShowInfoChan    chan getShowInfoRequest
-	getShowInfoStmt    *sql.Stmt
-	quit               chan bool
-	done               chan bool
+	dbh                 *sql.DB
+	password_cache      map[string]string
+	getPasswordChan     chan getPasswordRequest
+	getPasswordStmt     *sql.Stmt
+	getGroupOfCartChan  chan getGroupOfCartRequest
+	getGroupOfCartStmt  *sql.Stmt
+	getShowInfoChan     chan getShowInfoRequest
+	getShowInfoStmt     *sql.Stmt
+	checkMusicGroupChan chan checkMusicGroupRequest
+	checkMusicGroupStmt *sql.Stmt
+	quit                chan bool
+	done                chan bool
 }
 
 func (self *RdDb) init(conf *Config) (err error) {
@@ -89,6 +101,9 @@ func (self *RdDb) init(conf *Config) (err error) {
 	if self.getShowInfoStmt, err = self.dbh.Prepare("select TITLE,MACROS from CART where NUMBER = ?;"); err != nil {
 		return
 	}
+	if self.checkMusicGroupStmt, err = self.dbh.Prepare("select count(*) from DROPBOXES where GROUP_NAME = ? and SET_USER_DEFINED like \"M;%\";"); err != nil {
+		return
+	}
 	return
 }
 
@@ -152,11 +167,25 @@ func (self *RdDb) getShowInfo(showid int) (title string, carts map[int]int, err
 	}
 
 	rhdl.Printf("RdDb: macros for showid '%d' are set to '%s'", showid, macros)
-	// TODO: also fetch cart list
+	// TODO: also fetch cart list and import params (norm_level, ...)
 	carts = make(map[int]int)
 	return
 }
 
+func (self *RdDb) checkMusicGroup(group string) (ismusic bool, err error) {
+	var cnt int
+	err = self.checkMusicGroupStmt.QueryRow(group).Scan(&cnt)
+	if err != nil {
+		if err == sql.ErrNoRows {
+			err = nil
+			ismusic = false
+		}
+		return
+	}
+	ismusic = cnt > 0
+	return
+}
+
 func (self *RdDb) dispatchRequests() {
 	defer func() { self.done <- true }()
 	for {
@@ -179,6 +208,10 @@ func (self *RdDb) dispatchRequests() {
 			rhdl.Println("RdDb: got getShowInfo request for", req.showid)
 			title, carts, err := self.getShowInfo(req.showid)
 			req.response <- getShowInfoResult{title, carts, err}
+		case req := <-self.checkMusicGroupChan:
+			rhdl.Println("RdDb: got checkMusicGroup request for", req.group)
+			ismusic, err := self.checkMusicGroup(req.group)
+			req.response <- checkMusicGroupResult{ismusic, err}
 		}
 	}
 }
@@ -199,7 +232,10 @@ func (self *RdDb) Cleanup() {
 		self.getGroupOfCartStmt.Close()
 	}
 	if self.getShowInfoStmt != nil {
-		self.getPasswordStmt.Close()
+		self.getShowInfoStmt.Close()
+	}
+	if self.checkMusicGroupStmt != nil {
+		self.checkMusicGroupStmt.Close()
 	}
 }
 
@@ -212,6 +248,7 @@ func NewRdDb(conf *Config) (db *RdDb, err error) {
 	db.getPasswordChan = make(chan getPasswordRequest)
 	db.getGroupOfCartChan = make(chan getGroupOfCartRequest)
 	db.getShowInfoChan = make(chan getShowInfoRequest)
+	db.checkMusicGroupChan = make(chan checkMusicGroupRequest)
 
 	if err = db.init(conf); err != nil {
 		return
-- 
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