| 1 | from __future__ import annotations |
| 2 | |
| 3 | from typing import Optional |
| 4 | |
| 5 | from rich.console import Console |
| 6 | from rich.progress import ( |
| 7 | BarColumn, |
| 8 | Progress, |
| 9 | SpinnerColumn, |
| 10 | TaskProgressColumn, |
| 11 | TextColumn, |
| 12 | TimeRemainingColumn, |
| 13 | ) |
| 14 | from rich.table import Table |
| 15 | |
| 16 | console = Console() |
| 17 | |
| 18 | |
| 19 | class ProgressDisplay: |
| 20 | _URL_STEP_TOTAL = 6 |
| 21 | |
| 22 | def __init__(self): |
| 23 | self.console = console |
| 24 | self._progress_ctx: Optional[Progress] = None |
| 25 | self._progress: Optional[Progress] = None |
| 26 | self._overall_task_id: Optional[int] = None |
| 27 | self._url_task_id: Optional[int] = None |
| 28 | self._item_task_id: Optional[int] = None |
| 29 | self._url_index = 0 |
| 30 | self._url_total = 0 |
| 31 | self._url_step_completed = 0 |
| 32 | self._item_total = 0 |
| 33 | self._item_completed = 0 |
| 34 | self._single_url_item_mode = False |
| 35 | self._item_stats = {"success": 0, "failed": 0, "skipped": 0} |
| 36 | |
| 37 | def show_banner(self): |
| 38 | banner = """ |
| 39 | ╔══════════════════════════════════════════╗ |
| 40 | ║ Douyin Downloader v2.0.0 ║ |
| 41 | ║ 抖音批量下载工具 ║ |
| 42 | ╚══════════════════════════════════════════╝ |
| 43 | """ |
| 44 | self._active_console().print(banner, style="bold cyan") |
| 45 | |
| 46 | def create_progress(self) -> Progress: |
| 47 | return Progress( |
| 48 | SpinnerColumn(), |
| 49 | TextColumn("[progress.description]{task.description}"), |
| 50 | BarColumn(), |
| 51 | TaskProgressColumn(), |
| 52 | TimeRemainingColumn(), |
| 53 | TextColumn("[dim]{task.fields[detail]}"), |
| 54 | console=self.console, |
| 55 | transient=True, |
| 56 | refresh_per_second=6, |
| 57 | ) |
| 58 | |
| 59 | def start_download_session(self, total_urls: int): |
| 60 | if self._progress is not None: |
| 61 | return |
| 62 | |
| 63 | self._progress_ctx = self.create_progress() |
| 64 | self._progress = self._progress_ctx.__enter__() |
| 65 | self._single_url_item_mode = False |
| 66 | self._overall_task_id = self._progress.add_task( |
| 67 | "总体进度", |
| 68 | total=max(total_urls, 1), |
| 69 | completed=0, |
| 70 | detail=f"共 {total_urls} 个 URL", |
| 71 | ) |
| 72 | |
| 73 | def stop_download_session(self): |
| 74 | self._cleanup_url_tasks() |
| 75 | |
| 76 | if self._progress_ctx is not None: |
| 77 | self._progress_ctx.__exit__(None, None, None) |
| 78 | |
| 79 | self._progress_ctx = None |
| 80 | self._progress = None |
| 81 | self._overall_task_id = None |
| 82 | self._single_url_item_mode = False |
| 83 | |
| 84 | def start_url(self, index: int, total: int, url: str): |
| 85 | self._url_index = index |
| 86 | self._url_total = total |
| 87 | self._url_step_completed = 0 |
| 88 | self._item_total = 0 |
| 89 | self._item_completed = 0 |
| 90 | self._item_stats = {"success": 0, "failed": 0, "skipped": 0} |
| 91 | |
| 92 | self._cleanup_url_tasks() |
| 93 | if not self._progress: |
| 94 | return |
| 95 | |
| 96 | self._url_task_id = self._progress.add_task( |
| 97 | self._format_url_description("待开始"), |
| 98 | total=self._URL_STEP_TOTAL, |
| 99 | completed=0, |
| 100 | detail=self._shorten(url, max_len=72), |
| 101 | ) |
| 102 | |
| 103 | def complete_url(self, result=None): |
| 104 | if self._progress and self._url_task_id is not None: |
| 105 | detail = "" |
| 106 | if result: |
| 107 | detail = f"成功 {result.success} / 失败 {result.failed} / 跳过 {result.skipped}" |
| 108 | self._progress.update( |
| 109 | self._url_task_id, |
| 110 | completed=self._URL_STEP_TOTAL, |
| 111 | description=self._format_url_description("完成"), |
| 112 | detail=detail, |
| 113 | ) |
| 114 | |
| 115 | if self._progress and self._overall_task_id is not None: |
| 116 | if self._single_url_item_mode: |
| 117 | self._progress.update(self._overall_task_id, completed=self._item_total or 1) |
| 118 | else: |
| 119 | self._progress.advance(self._overall_task_id, 1) |
| 120 | |
| 121 | def fail_url(self, reason: str): |
| 122 | if self._progress and self._url_task_id is not None: |
| 123 | self._progress.update( |
| 124 | self._url_task_id, |
| 125 | completed=self._URL_STEP_TOTAL, |
| 126 | description=self._format_url_description("失败"), |
| 127 | detail=reason, |
| 128 | ) |
| 129 | |
| 130 | if self._progress and self._overall_task_id is not None: |
| 131 | if self._single_url_item_mode: |
| 132 | self._progress.update(self._overall_task_id, completed=self._item_total or 1) |
| 133 | else: |
| 134 | self._progress.advance(self._overall_task_id, 1) |
| 135 | |
| 136 | def advance_step(self, step: str, detail: str = ""): |
| 137 | if not self._progress or self._url_task_id is None: |
| 138 | return |
| 139 | |
| 140 | self._url_step_completed = min(self._url_step_completed + 1, self._URL_STEP_TOTAL) |
| 141 | self._progress.update( |
| 142 | self._url_task_id, |
| 143 | completed=self._url_step_completed, |
| 144 | description=self._format_url_description(step), |
| 145 | detail=detail, |
| 146 | ) |
| 147 | |
| 148 | def update_step(self, step: str, detail: str = ""): |
| 149 | if not self._progress or self._url_task_id is None: |
| 150 | return |
| 151 | |
| 152 | self._progress.update( |
| 153 | self._url_task_id, |
| 154 | description=self._format_url_description(step), |
| 155 | detail=detail, |
| 156 | ) |
| 157 | |
| 158 | def set_item_total(self, total: int, detail: str = ""): |
| 159 | if not self._progress: |
| 160 | return |
| 161 | |
| 162 | self._item_total = max(total, 1) |
| 163 | self._item_completed = 1 if total == 0 else 0 |
| 164 | self._item_stats = {"success": 0, "failed": 0, "skipped": 0} |
| 165 | |
| 166 | if self._url_total == 1 and self._overall_task_id is not None: |
| 167 | self._single_url_item_mode = True |
| 168 | self._progress.update( |
| 169 | self._overall_task_id, |
| 170 | total=self._item_total, |
| 171 | completed=self._item_completed, |
| 172 | detail=f"共 {total} 个作品", |
| 173 | ) |
| 174 | |
| 175 | description = self._format_item_description() |
| 176 | item_detail = detail or ("无待下载条目" if total == 0 else "") |
| 177 | |
| 178 | if self._item_task_id is None: |
| 179 | self._item_task_id = self._progress.add_task( |
| 180 | description, |
| 181 | total=self._item_total, |
| 182 | completed=self._item_completed, |
| 183 | detail=item_detail, |
| 184 | ) |
| 185 | return |
| 186 | |
| 187 | self._progress.update( |
| 188 | self._item_task_id, |
| 189 | total=self._item_total, |
| 190 | completed=self._item_completed, |
| 191 | description=description, |
| 192 | detail=item_detail, |
| 193 | ) |
| 194 | |
| 195 | def advance_item(self, status: str, detail: str = ""): |
| 196 | if not self._progress: |
| 197 | return |
| 198 | if self._item_task_id is None: |
| 199 | self.set_item_total(1, "初始化条目进度") |
| 200 | assert self._item_task_id is not None |
| 201 | |
| 202 | if status in self._item_stats: |
| 203 | self._item_stats[status] += 1 |
| 204 | if self._item_completed < self._item_total: |
| 205 | self._item_completed += 1 |
| 206 | |
| 207 | status_map = {"success": "成功", "failed": "失败", "skipped": "跳过"} |
| 208 | status_text = status_map.get(status, status) |
| 209 | item_detail = f"最近: {status_text} {self._shorten(detail, max_len=36)}" |
| 210 | |
| 211 | self._progress.update( |
| 212 | self._item_task_id, |
| 213 | completed=self._item_completed, |
| 214 | description=self._format_item_description(), |
| 215 | detail=item_detail, |
| 216 | ) |
| 217 | if self._single_url_item_mode and self._overall_task_id is not None: |
| 218 | self._progress.update( |
| 219 | self._overall_task_id, |
| 220 | completed=self._item_completed, |
| 221 | detail=f"共 {self._item_total} 个作品", |
| 222 | ) |
| 223 | |
| 224 | def show_result(self, result): |
| 225 | table = Table(title="Download Summary", show_header=True, header_style="bold magenta") |
| 226 | table.add_column("Metric", style="cyan") |
| 227 | table.add_column("Count", justify="right", style="green") |
| 228 | |
| 229 | table.add_row("Total", str(result.total)) |
| 230 | table.add_row("Success", str(result.success)) |
| 231 | table.add_row("Failed", str(result.failed)) |
| 232 | table.add_row("Skipped", str(result.skipped)) |
| 233 | |
| 234 | if result.total > 0: |
| 235 | success_rate = (result.success / result.total) * 100 |
| 236 | table.add_row("Success Rate", f"{success_rate:.1f}%") |
| 237 | |
| 238 | self._active_console().print(table) |
| 239 | |
| 240 | def print_info(self, message: str): |
| 241 | self._active_console().print(f"[blue]ℹ[/blue] {message}") |
| 242 | |
| 243 | def print_success(self, message: str): |
| 244 | self._active_console().print(f"[green]✓[/green] {message}") |
| 245 | |
| 246 | def print_warning(self, message: str): |
| 247 | self._active_console().print(f"[yellow]⚠[/yellow] {message}") |
| 248 | |
| 249 | def print_error(self, message: str): |
| 250 | self._active_console().print(f"[red]✗[/red] {message}") |
| 251 | |
| 252 | def _cleanup_url_tasks(self): |
| 253 | if not self._progress: |
| 254 | self._url_task_id = None |
| 255 | self._item_task_id = None |
| 256 | return |
| 257 | |
| 258 | if self._item_task_id is not None: |
| 259 | self._progress.remove_task(self._item_task_id) |
| 260 | self._item_task_id = None |
| 261 | if self._url_task_id is not None: |
| 262 | self._progress.remove_task(self._url_task_id) |
| 263 | self._url_task_id = None |
| 264 | |
| 265 | def _format_url_description(self, step: str) -> str: |
| 266 | return f"URL {self._url_index}/{self._url_total} · {step}" |
| 267 | |
| 268 | def _format_item_description(self) -> str: |
| 269 | return ( |
| 270 | "作品下载 " |
| 271 | f"S:{self._item_stats['success']} " |
| 272 | f"F:{self._item_stats['failed']} " |
| 273 | f"K:{self._item_stats['skipped']}" |
| 274 | ) |
| 275 | |
| 276 | def _active_console(self) -> Console: |
| 277 | if self._progress: |
| 278 | return self._progress.console |
| 279 | return self.console |
| 280 | |
| 281 | @staticmethod |
| 282 | def _shorten(text: str, max_len: int = 60) -> str: |
| 283 | normalized = (text or "").strip() |
| 284 | if len(normalized) <= max_len: |
| 285 | return normalized |
| 286 | return f"{normalized[: max_len - 3]}..." |
| 287 |