Play random major and/or minor chords

1 files changed, 24 insertions, 0 deletions

diff --git a/src/view/options.ts b/src/view/options.ts
new file mode 100644
index 0000000..4c71be2
--- /dev/null
+++ b/src/view/options.ts
@@ -0,0 +1,24 @@
+export type Options = {
+  major: boolean,
+  minor: boolean,
+  bpm: number,
+  beatsPerChord: number
+}
+
+let defaultOptions: Options = {
+  major: true,
+  minor: false,
+  bpm: 90,
+  beatsPerChord: 4
+}
+
+let key: string = 'options'
+
+export function load(): Options {
+  let str = localStorage[key]
+  return str && JSON.parse(str) || defaultOptions
+}
+
+export function save(options: Options): void {
+  localStorage[key] = JSON.stringify(options)
+}