feat: 支持动态日期和❤️符号

Author: kagol

src/app/app.component.html

@@ -1,3 +1,4 @@
 <d-calendar-graph></d-calendar-graph>
-<d-calendar-graph [dateRange]="['2019-06-01', '2020-11-01']" text="DevUI is excellent"></d-calendar-graph>
+<d-calendar-graph text="❤DevUI"></d-calendar-graph>
+<d-calendar-graph text="DevUI is excellent"></d-calendar-graph>
 <router-outlet></router-outlet>

src/app/calendar-graph/calendar-graph.component.ts

@@ -23,9 +23,16 @@ export class CalendarGraphComponent implements OnInit {
 
   ngOnInit() {
       const now = moment().format(DEFAULT_DATE_FORMAT);
-      const lastYear = moment().subtract(1, "years").format(DEFAULT_DATE_FORMAT);
+       // 开始日期默认为最近一年
+      let startDate = moment().subtract(1, 'years').format(DEFAULT_DATE_FORMAT);
+
+      if (this.text) {
+        const symbolArray = textToSymbolArray(this.text);
+        // 根据文本动态计算开始日期
+        startDate = moment().subtract(symbolArray.length, 'weeks').format(DEFAULT_DATE_FORMAT);
+      }
 
-      let dateRange = [ lastYear, now ];
+      let dateRange = [ startDate, now ];
       if (this.dateRange) {
           dateRange = getCompleteDateRange(this.dateRange);
       }

src/app/calendar-graph/calendar.config.ts

@@ -113,5 +113,5 @@ export const SYMBOL_MAP = {
     '8': LETTER_8,
     '9': LETTER_9,
     ' ': EMPTY_WEEK,
-    '❤️': IMG_LOVE,
+    '2764': IMG_LOVE, // '❤️'.charCodeAt(0).toString(16) = 2764 使用Unicode编码代替具体的符号
 };

src/app/calendar-graph/calendar.util.ts

@@ -40,7 +40,7 @@ export function transpose(A) {
     let result = [], rowItem = [];
     const rows = A.length;
     const cols = A[0].length;
-    for(let i = 0;i < cols;i++){  
+    for(let i = 0;i < cols;i++){
         rowItem = [];
         for(let j = 0;j < rows;j++){
           rowItem.push(A[j][i]);
@@ -53,7 +53,7 @@ export function transpose(A) {
 // 文字转字母数组
 export function textToSymbolArray(text) {
     return text.split('').join(' ').split('')
-    .map(char => SYMBOL_MAP[char])
+    .map(char => SYMBOL_MAP[char] || SYMBOL_MAP[char.charCodeAt(0).toString(16)])
     .reduce((a, b) => a.concat(b), []);
 }