98 lines
2.7 KiB
Go
98 lines
2.7 KiB
Go
package main
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import (
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"log"
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"net/http"
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"strconv"
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"github.com/gin-gonic/gin"
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)
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// MovieList 电影列表
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func MovieList(c *gin.Context) {
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response := gin.H{
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"code": http.StatusInternalServerError,
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"message": "An unexpected error occurred.", // Default error message
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"data": gin.H{"items": []Movie{}, "total": 0},
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}
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categoryName := c.Query("category") // Expects category name like "15min", "30min", etc.
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var moviesToPaginate []Movie
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// Filter movies by category if a categoryName is provided
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if categoryName != "" {
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for _, m := range movies { // 'movies' is the global slice from initMovie()
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if m.TimeCategory == categoryName {
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moviesToPaginate = append(moviesToPaginate, m)
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}
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}
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} else {
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// If no category is specified, use all movies
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// The global 'movies' slice is already sorted by category, then duration.
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// So, if no category is given, pagination will occur over this pre-sorted list.
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moviesToPaginate = movies
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}
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// Pagination logic
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page := 0 // Default to page 1 (0-indexed internally)
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spage := c.Query("page")
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if spage != "" {
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p, err := strconv.Atoi(spage)
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if err != nil || p < 1 { // Page numbers should be 1 or greater
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log.Println("Invalid page number:", spage, err)
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response["code"] = http.StatusBadRequest
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response["message"] = "Invalid page number. Must be a positive integer."
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c.JSON(http.StatusBadRequest, response) // Send response immediately for bad input
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return
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}
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page = p - 1 // Convert to 0-indexed
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}
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limit := 12 // Default limit
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slimit := c.Query("limit")
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if slimit != "" {
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l, err := strconv.Atoi(slimit)
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if err != nil || l < 1 { // Limit should be positive
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log.Println("Invalid limit number:", slimit, err)
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response["code"] = http.StatusBadRequest
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response["message"] = "Invalid limit number. Must be a positive integer."
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c.JSON(http.StatusBadRequest, response) // Send response immediately
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return
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}
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limit = l
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}
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// Calculate start and end for slicing
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start := page * limit
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end := start + limit
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// Handle cases where the requested page is out of bounds
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if start >= len(moviesToPaginate) {
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// Requested page is beyond the available data, return empty list for items
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response["data"] = gin.H{
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"items": []Movie{},
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"total": len(moviesToPaginate),
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}
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response["code"] = http.StatusOK
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response["message"] = "Success"
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c.JSON(http.StatusOK, response)
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return
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}
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if end > len(moviesToPaginate) {
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end = len(moviesToPaginate)
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}
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// Prepare successful response data
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responseData := gin.H{
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"items": moviesToPaginate[start:end],
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"total": len(moviesToPaginate),
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}
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response["code"] = http.StatusOK
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response["message"] = "Success"
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response["data"] = responseData
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c.JSON(http.StatusOK, response)
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}
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