661 lines
23 KiB
Go
661 lines
23 KiB
Go
// main.go
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package main
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import (
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"context"
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"encoding/json"
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"html/template"
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"io"
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"log"
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"fmt"
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"math/rand"
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"net/http"
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"os"
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"strings"
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"sync"
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"time"
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)
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type Task struct {
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ID string `json:"id"`
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Name string `json:"name"`
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URL string `json:"url"`
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PageLoaded string `json:"page_loaded"`
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OutOfStock string `json:"out_of_stock"`
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InStock bool `json:"in_stock"`
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LastCheck time.Time `json:"last_check"`
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Status string `json:"status"`
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Notified bool `json:"notified"`
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}
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type Config struct {
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GotifyURL string `json:"gotify_url"`
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GotifyToken string `json:"gotify_token"`
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Interval int `json:"interval"`
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Timeout int `json:"timeout"`
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NotifyEnabled bool `json:"notify_enabled"`
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}
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var (
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tasks = make(map[string]*Task)
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config = &Config{Interval: 60, Timeout: 20, NotifyEnabled: true}
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mu sync.RWMutex
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configMu sync.RWMutex
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authToken = os.Getenv("AUTH_TOKEN")
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client *http.Client
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)
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func main() {
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loadEnv()
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loadTasks()
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loadConfig()
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updateClient()
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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go checker(ctx)
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http.HandleFunc("/", handleIndex)
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http.HandleFunc("/api/tasks", auth(handleTasks))
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http.HandleFunc("/api/task", auth(handleTask))
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http.HandleFunc("/api/config", auth(handleConfig))
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http.HandleFunc("/api/test-notification", auth(handleTestNotification))
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port := os.Getenv("PORT")
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if port == "" {
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port = "8080"
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}
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log.Println("启动服务:", port)
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log.Fatal(http.ListenAndServe(":"+port, nil))
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}
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func loadEnv() {
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data, err := os.ReadFile(".env")
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if err != nil {
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return
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}
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for _, line := range strings.Split(string(data), "\n") {
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line = strings.TrimSpace(line)
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if line == "" || strings.HasPrefix(line, "#") {
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continue
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}
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parts := strings.SplitN(line, "=", 2)
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if len(parts) == 2 {
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os.Setenv(parts[0], parts[1])
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}
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}
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}
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func auth(next http.HandlerFunc) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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if authToken != "" && r.Header.Get("Authorization") != "Bearer "+authToken {
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http.Error(w, "Unauthorized", 401)
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return
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}
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next(w, r)
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}
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}
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func handleIndex(w http.ResponseWriter, r *http.Request) {
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tmpl := `<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width,initial-scale=1">
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<title>库存监控</title>
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<style>
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*{margin:0;padding:0;box-sizing:border-box}
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:root{
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--bg:#f5f5f5;--card:#fff;--text:#333;--border:#ddd;--th-bg:#f8f9fa;
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--green:#4CAF50;--red:#f44336;--orange:#ff9800;--blue:#2196F3;--gray:#999
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}
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@media(prefers-color-scheme:dark){
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:root{
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--bg:#1a1a1a;--card:#2d2d2d;--text:#e0e0e0;--border:#404040;--th-bg:#383838
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}
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}
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body{font:14px sans-serif;padding:20px;background:var(--bg);color:var(--text);transition:all .3s}
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.container{max-width:1400px;margin:0 auto}
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h1{margin-bottom:20px;text-align:center}
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.header{display:flex;justify-content:center;gap:10px;margin-bottom:20px}
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.add-btn,.config-btn{background:var(--green);color:#fff;border:none;padding:10px 20px;cursor:pointer;border-radius:4px}
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.config-btn{background:var(--blue)}
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table{width:100%;background:var(--card);border-collapse:collapse;box-shadow:0 2px 8px rgba(0,0,0,.15);border-radius:8px;overflow:hidden}
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th,td{padding:12px;text-align:left;border-bottom:1px solid var(--border)}
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th{background:var(--th-bg);font-weight:600}
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tbody tr:hover{background:rgba(33,150,243,.05)}
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.status-cell{text-align:center}
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.status{display:inline-block;width:10px;height:10px;border-radius:50%}
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.status.ok{background:var(--green)}
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.status.error{background:var(--red)}
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.status.checking{background:var(--orange)}
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.stock-yes{color:var(--green);font-weight:600}
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.stock-no{color:var(--gray)}
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.btn{padding:5px 10px;margin:0 2px;cursor:pointer;border:none;border-radius:3px;background:var(--blue);color:#fff;font-size:12px}
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.btn-del{background:var(--red)}
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.uptime-bar{display:flex;gap:2px;height:30px}
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.uptime-item{flex:1;border-radius:2px;cursor:pointer;position:relative;transition:transform .2s}
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.uptime-item:hover{transform:scaleY(1.2)}
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.uptime-item.stock{background:var(--green)}
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.uptime-item.no-stock{background:#555}
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.uptime-item.error{background:var(--orange)}
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.uptime-item.unknown{background:#333}
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.uptime-tooltip{position:absolute;bottom:35px;left:50%;transform:translateX(-50%);background:#000;color:#fff;padding:4px 8px;border-radius:4px;font-size:11px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .2s;z-index:10}
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.uptime-item:hover .uptime-tooltip{opacity:1}
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.modal{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.6);align-items:center;justify-content:center;z-index:1000}
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.modal.show{display:flex}
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.modal-content{background:var(--card);padding:24px;border-radius:8px;width:90%;max-width:500px;box-shadow:0 4px 20px rgba(0,0,0,.3)}
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.form-group{margin-bottom:15px}
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label{display:block;margin-bottom:5px;font-weight:600}
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input{width:100%;padding:10px;border:1px solid var(--border);border-radius:4px;background:var(--card);color:var(--text)}
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.form-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}
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a{color:var(--blue)}
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@media(max-width:768px){
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.container{padding:10px}
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table{font-size:12px}
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th,td{padding:8px}
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}
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</style>
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</head>
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<body>
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<div class="container">
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<h1>库存监控</h1>
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<div class="header">
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<button class="config-btn" onclick="showConfigModal()">⚙ 系统设置</button>
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<button class="add-btn" onclick="showModal()">+ 添加监控</button>
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</div>
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<table id="taskTable">
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<thead>
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<tr>
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<th width="60">状态</th>
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<th width="150">名称</th>
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<th>监控历史</th>
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<th width="80">库存</th>
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<th width="150">最后检测</th>
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<th width="120">操作</th>
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</tr>
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</thead>
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<tbody></tbody>
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</table>
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</div>
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<div class="modal" id="modal">
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<div class="modal-content">
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<h2 id="modalTitle">添加监控</h2>
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<form id="taskForm">
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<input type="hidden" id="taskId">
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<div class="form-group">
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<label>名称</label>
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<input id="name" required>
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</div>
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<div class="form-group">
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<label>URL</label>
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<input id="url" required>
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</div>
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<div class="form-group">
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<label>页面加载标识</label>
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<input id="pageLoaded" placeholder="如: froots/js-js" required>
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</div>
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<div class="form-group">
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<label>缺货标识</label>
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<input id="outOfStock" placeholder="如: Out of Stock" required>
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</div>
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<div class="form-actions">
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<button type="button" class="btn" onclick="hideModal()">取消</button>
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<button type="submit" class="btn">保存</button>
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</div>
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</form>
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</div>
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</div>
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<div class="modal" id="configModal">
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<div class="modal-content">
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<h2>系统设置</h2>
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<form id="configForm">
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<div class="form-group">
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<label>
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<input type="checkbox" id="notifyEnabled"> 启用通知推送
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</label>
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</div>
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<div class="form-group">
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<label>Gotify URL</label>
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<input id="gotifyUrl" placeholder="https://gotify.example.com">
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</div>
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<div class="form-group">
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<label>Gotify Token</label>
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<input id="gotifyToken" placeholder="通知令牌">
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</div>
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<div class="form-group">
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<label>检测间隔(秒)</label>
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<input id="interval" type="number" min="10" required>
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</div>
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<div class="form-group">
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<label>超时时间(秒)</label>
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<input id="timeout" type="number" min="5" required>
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</div>
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<div class="form-actions">
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<button type="button" class="btn" onclick="testNotification()">测试通知</button>
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<button type="button" class="btn" onclick="hideConfigModal()">取消</button>
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<button type="submit" class="btn">保存</button>
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</div>
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</form>
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</div>
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</div>
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<script>
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const token = localStorage.getItem('token') || prompt('请输入访问令牌:');
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if(token) localStorage.setItem('token', token);
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const headers = {'Authorization': 'Bearer ' + token};
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let historyData = {};
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const MAX_BARS = 90;
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function initHistory(id) {
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if(!historyData[id]) {
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historyData[id] = Array(MAX_BARS).fill({state: 'unknown', time: null});
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}
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}
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function updateHistory(id, state, time) {
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initHistory(id);
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historyData[id].shift();
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historyData[id].push({state, time});
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}
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function loadTasks() {
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fetch('/api/tasks', {headers})
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.then(r => r.json())
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.then(tasks => {
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tasks.forEach(t => {
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initHistory(t.id);
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const state = t.status === 'ok' ? (t.in_stock ? 'stock' : 'no-stock') : (t.status === 'error' ? 'error' : 'unknown');
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const lastState = historyData[t.id][MAX_BARS - 1];
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if(!lastState.time || lastState.time !== t.last_check) {
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updateHistory(t.id, state, t.last_check || Date.now());
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}
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});
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const tbody = document.querySelector('#taskTable tbody');
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tbody.innerHTML = tasks.map(t => {
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const statusClass = t.status || 'checking';
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const stockText = t.in_stock ? '<span class="stock-yes">有货</span>' : '<span class="stock-no">无货</span>';
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const lastCheck = t.last_check ? new Date(t.last_check).toLocaleString('zh-CN') : '-';
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const history = historyData[t.id] || [];
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const uptimeBar = history.map(h => {
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const time = h.time ? new Date(h.time).toLocaleString('zh-CN') : '等待检测';
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const label = h.state === 'stock' ? '有货' : h.state === 'no-stock' ? '无货' : h.state === 'error' ? '错误' : '未知';
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return '<div class="uptime-item ' + h.state + '"><span class="uptime-tooltip">' + time + '<br>' + label + '</span></div>';
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}).join('');
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return '<tr>' +
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'<td class="status-cell"><span class="status ' + statusClass + '"></span></td>' +
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'<td>' + t.name + '</td>' +
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'<td><div class="uptime-bar">' + uptimeBar + '</div></td>' +
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'<td>' + stockText + '</td>' +
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'<td>' + lastCheck + '</td>' +
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'<td>' +
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'<button class="btn" onclick="editTask(\'' + t.id + '\')" title="编辑">✏️</button>' +
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'<button class="btn btn-del" onclick="delTask(\'' + t.id + '\')" title="删除">🗑️</button>' +
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'</td></tr>';
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}).join('');
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});
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}
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function showModal(task) {
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document.getElementById('modalTitle').textContent = task ? '编辑监控' : '添加监控';
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document.getElementById('taskId').value = task?.id || '';
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document.getElementById('name').value = task?.name || '';
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document.getElementById('url').value = task?.url || '';
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document.getElementById('pageLoaded').value = task?.page_loaded || '';
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document.getElementById('outOfStock').value = task?.out_of_stock || '';
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document.getElementById('modal').classList.add('show');
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}
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function hideModal() {
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document.getElementById('modal').classList.remove('show');
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}
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function showConfigModal() {
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fetch('/api/config', {headers})
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.then(r => r.json())
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.then(cfg => {
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document.getElementById('gotifyUrl').value = cfg.gotify_url || '';
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document.getElementById('gotifyToken').value = cfg.gotify_token || '';
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document.getElementById('interval').value = cfg.interval || 60;
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document.getElementById('timeout').value = cfg.timeout || 20;
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document.getElementById('notifyEnabled').checked = cfg.notify_enabled !== false;
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document.getElementById('configModal').classList.add('show');
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});
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}
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function hideConfigModal() {
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document.getElementById('configModal').classList.remove('show');
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}
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function testNotification() {
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const testConfig = {
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gotify_url: document.getElementById('gotifyUrl').value,
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gotify_token: document.getElementById('gotifyToken').value
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};
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fetch('/api/test-notification', {
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method: 'POST',
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headers: {...headers, 'Content-Type': 'application/json'},
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body: JSON.stringify(testConfig)
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}).then(r => r.ok ? alert('测试通知已发送，请检查 Gotify') : alert('发送失败，查看后台日志'));
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}
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function editTask(id) {
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fetch('/api/tasks', {headers})
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.then(r => r.json())
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.then(tasks => {
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const task = tasks.find(t => t.id === id);
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if(task) showModal(task);
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});
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}
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function delTask(id) {
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if(!confirm('确认删除?')) return;
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fetch('/api/task?id=' + id, {method: 'DELETE', headers})
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.then(() => {
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delete historyData[id];
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loadTasks();
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});
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}
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document.getElementById('taskForm').onsubmit = e => {
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e.preventDefault();
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const data = {
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id: document.getElementById('taskId').value,
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name: document.getElementById('name').value,
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url: document.getElementById('url').value,
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page_loaded: document.getElementById('pageLoaded').value,
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out_of_stock: document.getElementById('outOfStock').value
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};
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fetch('/api/task', {
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method: 'POST',
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headers: {...headers, 'Content-Type': 'application/json'},
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body: JSON.stringify(data)
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}).then(() => {
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hideModal();
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loadTasks();
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});
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};
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document.getElementById('configForm').onsubmit = e => {
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e.preventDefault();
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const data = {
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gotify_url: document.getElementById('gotifyUrl').value,
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gotify_token: document.getElementById('gotifyToken').value,
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interval: parseInt(document.getElementById('interval').value),
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timeout: parseInt(document.getElementById('timeout').value),
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notify_enabled: document.getElementById('notifyEnabled').checked
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};
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fetch('/api/config', {
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method: 'POST',
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headers: {...headers, 'Content-Type': 'application/json'},
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body: JSON.stringify(data)
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}).then(() => {
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hideConfigModal();
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alert('设置已保存并生效');
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});
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};
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loadTasks();
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setInterval(loadTasks, 30000);
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</script>
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</body>
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</html>`
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w.Header().Set("Content-Type", "text/html")
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template.Must(template.New("").Parse(tmpl)).Execute(w, nil)
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}
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func handleTasks(w http.ResponseWriter, r *http.Request) {
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mu.RLock()
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defer mu.RUnlock()
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list := make([]*Task, 0, len(tasks))
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for _, t := range tasks {
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list = append(list, t)
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}
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json.NewEncoder(w).Encode(list)
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}
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func handleTask(w http.ResponseWriter, r *http.Request) {
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if r.Method == "DELETE" {
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id := r.URL.Query().Get("id")
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mu.Lock()
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delete(tasks, id)
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mu.Unlock()
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saveTasks()
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return
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}
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var task Task
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json.NewDecoder(r.Body).Decode(&task)
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if task.ID == "" {
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task.ID = time.Now().Format("20060102150405")
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}
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mu.Lock()
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tasks[task.ID] = &task
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mu.Unlock()
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saveTasks()
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}
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func handleConfig(w http.ResponseWriter, r *http.Request) {
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if r.Method == "POST" {
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var cfg Config
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json.NewDecoder(r.Body).Decode(&cfg)
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configMu.Lock()
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config = &cfg
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configMu.Unlock()
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updateClient()
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saveConfig()
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return
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}
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configMu.RLock()
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defer configMu.RUnlock()
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json.NewEncoder(w).Encode(config)
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}
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func checker(ctx context.Context) {
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for {
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select {
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case <-ctx.Done():
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return
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default:
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}
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configMu.RLock()
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interval := config.Interval
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configMu.RUnlock()
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mu.RLock()
|
|
list := make([]*Task, 0, len(tasks))
|
|
for _, t := range tasks {
|
|
list = append(list, t)
|
|
}
|
|
mu.RUnlock()
|
|
|
|
for _, task := range list {
|
|
go checkTask(task)
|
|
time.Sleep(time.Duration(2+rand.Intn(5)) * time.Second)
|
|
}
|
|
|
|
jitter := rand.Intn(20) - 10
|
|
time.Sleep(time.Duration(interval+jitter) * time.Second)
|
|
}
|
|
}
|
|
|
|
func checkTask(task *Task) {
|
|
task.Status = "checking"
|
|
|
|
body, err := fetch(task.URL)
|
|
now := time.Now()
|
|
|
|
status := "ok"
|
|
inStock := false
|
|
|
|
if err != nil || !strings.Contains(body, task.PageLoaded) {
|
|
status = "error"
|
|
} else {
|
|
inStock = !strings.Contains(body, task.OutOfStock)
|
|
}
|
|
|
|
mu.Lock()
|
|
wasInStock := task.InStock
|
|
wasNotified := task.Notified
|
|
task.Status = status
|
|
task.InStock = inStock
|
|
task.LastCheck = now
|
|
|
|
if !inStock {
|
|
task.Notified = false
|
|
}
|
|
mu.Unlock()
|
|
saveTasks()
|
|
|
|
configMu.RLock()
|
|
notifyEnabled := config.NotifyEnabled
|
|
configMu.RUnlock()
|
|
|
|
if notifyEnabled && inStock && !wasInStock && !wasNotified {
|
|
notify(task.Name + " 有货了！", task.URL)
|
|
mu.Lock()
|
|
task.Notified = true
|
|
mu.Unlock()
|
|
saveTasks()
|
|
}
|
|
}
|
|
|
|
func fetch(url string) (string, error) {
|
|
req, _ := http.NewRequest("GET", url, nil)
|
|
req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36")
|
|
req.Header.Set("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")
|
|
req.Header.Set("Accept-Language", "en-US,en;q=0.9")
|
|
|
|
resp, err := client.Do(req)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
defer resp.Body.Close()
|
|
body, _ := io.ReadAll(resp.Body)
|
|
return string(body), nil
|
|
}
|
|
|
|
func notify(title, msg string) {
|
|
configMu.RLock()
|
|
url, token := config.GotifyURL, config.GotifyToken
|
|
configMu.RUnlock()
|
|
|
|
if url == "" || token == "" {
|
|
return
|
|
}
|
|
|
|
go func() {
|
|
endpoint := strings.TrimRight(url, "/") + "/message"
|
|
payload := fmt.Sprintf(`{"title":"%s","message":"%s","priority":10}`, title, msg)
|
|
req, _ := http.NewRequest("POST", endpoint, strings.NewReader(payload))
|
|
req.Header.Set("Content-Type", "application/json")
|
|
req.Header.Set("X-Gotify-Key", token)
|
|
|
|
resp, err := http.DefaultClient.Do(req)
|
|
if err != nil {
|
|
log.Printf("发送通知失败: %v", err)
|
|
return
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
if resp.StatusCode != 200 {
|
|
body, _ := io.ReadAll(resp.Body)
|
|
log.Printf("通知返回错误 %d: %s", resp.StatusCode, body)
|
|
}
|
|
}()
|
|
}
|
|
|
|
func handleTestNotification(w http.ResponseWriter, r *http.Request) {
|
|
var testConfig struct {
|
|
GotifyURL string `json:"gotify_url"`
|
|
GotifyToken string `json:"gotify_token"`
|
|
}
|
|
json.NewDecoder(r.Body).Decode(&testConfig)
|
|
|
|
if testConfig.GotifyURL == "" || testConfig.GotifyToken == "" {
|
|
http.Error(w, "缺少配置", 400)
|
|
return
|
|
}
|
|
|
|
endpoint := strings.TrimRight(testConfig.GotifyURL, "/") + "/message"
|
|
payload := `{"title":"测试通知","message":"Gotify 配置正常","priority":10}`
|
|
req, _ := http.NewRequest("POST", endpoint, strings.NewReader(payload))
|
|
req.Header.Set("Content-Type", "application/json")
|
|
req.Header.Set("X-Gotify-Key", testConfig.GotifyToken)
|
|
|
|
resp, err := http.DefaultClient.Do(req)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), 500)
|
|
return
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
if resp.StatusCode != 200 {
|
|
body, _ := io.ReadAll(resp.Body)
|
|
http.Error(w, string(body), resp.StatusCode)
|
|
return
|
|
}
|
|
|
|
json.NewEncoder(w).Encode(map[string]string{"status": "ok"})
|
|
}
|
|
|
|
func updateClient() {
|
|
configMu.RLock()
|
|
timeout := config.Timeout
|
|
configMu.RUnlock()
|
|
client = &http.Client{Timeout: time.Duration(timeout) * time.Second}
|
|
}
|
|
|
|
func saveJSON(filename string, v interface{}) {
|
|
data, _ := json.MarshalIndent(v, "", " ")
|
|
os.WriteFile(filename, data, 0644)
|
|
}
|
|
|
|
func loadTasks() {
|
|
data, err := os.ReadFile("tasks.json")
|
|
if err != nil {
|
|
return
|
|
}
|
|
var list []*Task
|
|
json.Unmarshal(data, &list)
|
|
mu.Lock()
|
|
for _, t := range list {
|
|
tasks[t.ID] = t
|
|
}
|
|
mu.Unlock()
|
|
}
|
|
|
|
func saveTasks() {
|
|
mu.RLock()
|
|
list := make([]*Task, 0, len(tasks))
|
|
for _, t := range tasks {
|
|
list = append(list, t)
|
|
}
|
|
mu.RUnlock()
|
|
saveJSON("tasks.json", list)
|
|
}
|
|
|
|
func loadConfig() {
|
|
data, err := os.ReadFile("config.json")
|
|
if err != nil {
|
|
return
|
|
}
|
|
configMu.Lock()
|
|
json.Unmarshal(data, config)
|
|
configMu.Unlock()
|
|
}
|
|
|
|
func saveConfig() {
|
|
configMu.RLock()
|
|
defer configMu.RUnlock()
|
|
saveJSON("config.json", config)
|
|
}
|