From e944a8ac1fec6445b832ed0f64b23865921e1bf5 Mon Sep 17 00:00:00 2001
From: Sergii Kostyrko <srg.kostyrko@gmail.com>
Date: Sat, 16 Dec 2023 10:17:17 +0200
Subject: [PATCH] fix: fix year reset in interval calendar

---
 src/interval-journal/interval-manager.test.ts | 42 +++++++++----------
 src/interval-journal/interval-manager.ts      |  2 +-
 2 files changed, 22 insertions(+), 22 deletions(-)

diff --git a/src/interval-journal/interval-manager.test.ts b/src/interval-journal/interval-manager.test.ts
index 8efe1cb..4c8f511 100644
--- a/src/interval-journal/interval-manager.test.ts
+++ b/src/interval-journal/interval-manager.test.ts
@@ -347,8 +347,8 @@ describe("IntervalManager", () => {
         {
           ...deepCopy(DEFAULT_CONFIG_INTERVAL),
           numeration_type: "year",
-          start_index: 2,
-          start_date: "2022-05-01",
+          start_index: 4,
+          start_date: "2023-11-01",
           duration: 3,
           granularity: "month",
         },
@@ -357,51 +357,51 @@ describe("IntervalManager", () => {
     });
 
     test.each([
-      ["start interval for start date", "2022-05-01", { index: 2, startDate: "2022-05-01", endDate: "2022-07-31" }],
+      ["start interval for start date", "2023-11-01", { index: 4, startDate: "2023-11-01", endDate: "2024-01-31" }],
       [
         "start interval for date within start interval",
-        "2022-06-01",
-        { index: 2, startDate: "2022-05-01", endDate: "2022-07-31" },
+        "2023-12-01",
+        { index: 4, startDate: "2023-11-01", endDate: "2024-01-31" },
       ],
       [
         "start interval for interval end date",
-        "2022-07-31",
-        { index: 2, startDate: "2022-05-01", endDate: "2022-07-31" },
+        "2024-01-31",
+        { index: 4, startDate: "2023-11-01", endDate: "2024-01-31" },
       ],
       [
         "next interval after start interval",
-        "2022-08-01",
-        { index: 3, startDate: "2022-08-01", endDate: "2022-10-31" },
+        "2024-03-01",
+        { index: 1, startDate: "2024-02-01", endDate: "2024-04-30" },
       ],
       [
         "next interval with date in middle of interval",
-        "2022-08-10",
-        { index: 3, startDate: "2022-08-01", endDate: "2022-10-31" },
+        "2024-05-10",
+        { index: 2, startDate: "2024-05-01", endDate: "2024-07-31" },
       ],
       [
         "next interval for end date of interval",
-        "2022-10-31",
-        { index: 3, startDate: "2022-08-01", endDate: "2022-10-31" },
+        "2024-04-30",
+        { index: 1, startDate: "2024-02-01", endDate: "2024-04-30" },
       ],
       [
         "prev interval before start interval",
-        "2022-02-01",
-        { index: 1, startDate: "2022-02-01", endDate: "2022-04-30" },
+        "2023-08-01",
+        { index: 3, startDate: "2023-08-01", endDate: "2023-10-31" },
       ],
       [
         "prev interval with date in middle of interval",
-        "2022-03-10",
-        { index: 1, startDate: "2022-02-01", endDate: "2022-04-30" },
+        "2023-09-01",
+        { index: 3, startDate: "2023-08-01", endDate: "2023-10-31" },
       ],
       [
         "prev interval for end date of interval",
-        "2022-03-31",
-        { index: 1, startDate: "2022-02-01", endDate: "2022-04-30" },
+        "2023-10-31",
+        { index: 3, startDate: "2023-08-01", endDate: "2023-10-31" },
       ],
       [
         "interval in next year with index reset",
-        "2023-03-01",
-        { index: 1, startDate: "2023-02-01", endDate: "2023-04-30" },
+        "2025-03-01",
+        { index: 1, startDate: "2025-02-01", endDate: "2025-04-30" },
       ],
       [
         "interval in prev year with index reset",
diff --git a/src/interval-journal/interval-manager.ts b/src/interval-journal/interval-manager.ts
index 05bb664..2cc0046 100644
--- a/src/interval-journal/interval-manager.ts
+++ b/src/interval-journal/interval-manager.ts
@@ -104,7 +104,7 @@ export class IntervalManager {
   private calculateIntervalAfterKnown(date: MomentDate, interval: Interval): Interval {
     let curent = interval.endDate.clone().add(1, "day");
     let index = interval.index + 1;
-    if (this.shouldResetYearly && !curent.isSame(interval.endDate, "year")) {
+    if (this.shouldResetYearly && !curent.isSame(interval.startDate, "year")) {
       index = 1;
     }
     while (curent.isBefore(date, "day")) {