MORE REFACTORING!! + some improvements

Signed-off-by: ari melody <ari@arimelody.me>

music/link.go

@@ -0,0 +1,73 @@
+package music
+
+import (
+	"fmt"
+	"regexp"
+	"strings"
+
+	"github.com/jmoiron/sqlx"
+)
+
+type Link struct {
+    Name string `json:"name"`
+    URL  string `json:"url"`
+}
+
+// GETTERS
+
+func (link Link) GetName() string {
+	return link.Name
+}
+
+func (link Link) GetURL() string {
+	return link.URL
+}
+
+// SETTERS
+
+func (link Link) SetName(name string) error {
+	// TODO: update DB
+	link.Name = name
+	return nil
+}
+
+func (link Link) SetURL(url string) error {
+	// TODO: update DB
+	link.URL = url
+	return nil
+}
+
+// MISC
+
+func (link Link) NormaliseName() string {
+	rgx := regexp.MustCompile(`[^a-z0-9]`)
+	return strings.ToLower(rgx.ReplaceAllString(link.Name, ""))
+}
+
+// DATABASE
+
+func PullReleaseLinks(db *sqlx.DB, releaseID string) ([]Link, error) {
+    var links = []Link{}
+
+    link_rows, err := db.Query("SELECT name, url FROM musiclinks WHERE release=$1", releaseID);
+    if err != nil {
+        return []Link{}, err
+    }
+
+    for link_rows.Next() {
+        var link = Link{}
+
+        err = link_rows.Scan(
+            &link.Name,
+            &link.URL,
+        )
+        if err != nil {
+            fmt.Printf("Error while pulling link for release %s: %s\n", releaseID, err)
+            continue
+        }
+
+        links = append(links, link)
+    }
+
+    return links, nil
+}