Refactor TableView to improve separator handling with distinct header and footer methods.

Author: andrey-helldar

src/View/TableView.php

@@ -19,7 +19,7 @@ public function show(array $data): void
         $headers = $this->headers($data);
         $widths  = $this->columnWidths($headers, $data);
 
-        $this->writeLine($this->separator($widths));
+        $this->writeHeaderLine($widths);
         $this->writeLine($this->formatRow($headers, $widths));
         $this->writeLine($this->separator($widths));
 
@@ -33,7 +33,7 @@ public function show(array $data): void
             $this->writeLine($this->formatRow(array_values($row), $widths));
         }
 
-        $this->writeLine($this->separator($widths));
+        $this->writeFooterLine($widths);
     }
 
     protected function headers(array $data): array
@@ -54,11 +54,25 @@ protected function columnWidths(array $headers, array $data): array
         return $widths;
     }
 
-    protected function separator(array $widths): string
+    protected function writeHeaderLine(array $widths): void
+    {
+        $this->writeLine(
+            $this->separator($widths, '┌', '┬', '┐')
+        );
+    }
+
+    protected function writeFooterLine(array $widths): void
+    {
+        $this->writeLine(
+            $this->separator($widths, '└', '┴', '┘')
+        );
+    }
+
+    protected function separator(array $widths, string $start = '├', string $divider = '┼', string $end = '┤'): string
     {
-        $parts = array_map(fn (int $w) => str_repeat('-', $w + 2), $widths);
+        $parts = array_map(static fn (int $w) => str_repeat('─', $w + 2), $widths);
 
-        return '+' . implode('+', $parts) . '+';
+        return $start . implode($divider, $parts) . $end;
     }
 
     protected function formatRow(array $values, array $widths): string
@@ -69,6 +83,6 @@ protected function formatRow(array $values, array $widths): string
             $cells[] = ' ' . mb_str_pad((string) $value, $widths[$i]) . ' ';
         }
 
-        return '|' . implode('|', $cells) . '|';
+        return '│' . implode('│', $cells) . '│';
     }
 }