web/notify.moe
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Rewritten infinite scrolling

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This commit is contained in:
Eduard Urbach
2018-03-13 22:38:26 +01:00
parent 663070cf2a
commit 3e2594ab9f
10 changed files with 108 additions and 189 deletions
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61
pages/quotes/quotes.go
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@ -1,72 +1,41 @@
package quotes
import (
"net/http"
"strconv"
"github.com/aerogo/aero"
"github.com/animenotifier/arn"
"github.com/animenotifier/notify.moe/components"
"github.com/animenotifier/notify.moe/utils"
"github.com/animenotifier/notify.moe/utils/infinitescroll"
)
const maxQuotes = 9
const maxQuotes = 12
// Latest renders the quotes page.
// Latest renders the latest quotes.
func Latest(ctx *aero.Context) string {
user := utils.GetUser(ctx)
index, _ := ctx.GetInt("index")
quotes := arn.FilterQuotes(func(track *arn.Quote) bool {
return !track.IsDraft
})
arn.SortQuotesLatestFirst(quotes)
// Limit the number of displayed quotes
loadMoreIndex := 0
if len(quotes) > maxQuotes {
quotes = quotes[:maxQuotes]
loadMoreIndex = maxQuotes
}
return ctx.HTML(components.Quotes(quotes, loadMoreIndex, user))
}
// LatestFrom renders the quotes from the given index.
func LatestFrom(ctx *aero.Context) string {
user := utils.GetUser(ctx)
index, err := ctx.GetInt("index")
if err != nil {
return ctx.Error(http.StatusBadRequest, "Invalid start index", err)
}
allQuotes := arn.FilterQuotes(func(track *arn.Quote) bool {
return !track.IsDraft
})
if index < 0 || index >= len(allQuotes) {
return ctx.Error(http.StatusBadRequest, "Invalid start index (maximum is "+strconv.Itoa(len(allQuotes))+")", nil)
}
// Fetch all eligible quotes
allQuotes := fetchAll()
// Sort the quotes by date
arn.SortQuotesLatestFirst(allQuotes)
// Slice the part that we need
quotes := allQuotes[index:]
if len(quotes) > maxQuotes {
quotes = quotes[:maxQuotes]
}
nextIndex := index + maxQuotes
// Next index
nextIndex := infinitescroll.NextIndex(ctx, len(allQuotes), maxQuotes, index)
if nextIndex >= len(allQuotes) {
// End of data - no more scrolling
ctx.Response().Header().Set("X-LoadMore-Index", "-1")
} else {
// Send the index for the next request
ctx.Response().Header().Set("X-LoadMore-Index", strconv.Itoa(nextIndex))
// In case we're scrolling, send quotes only (without the page frame)
if index > 0 {
return ctx.HTML(components.QuotesScrollable(quotes, user))
}
return ctx.HTML(components.QuotesScrollable(quotes, user))
// Otherwise, send the full page
return ctx.HTML(components.Quotes(quotes, nextIndex, user))
}