88 lines
2.6 KiB
Go
88 lines
2.6 KiB
Go
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package config
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import (
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"fmt"
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"os"
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"strconv"
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)
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// v1.0.6: single source of truth for upload-size limits. Previously the same
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// values were duplicated in track/service.go, handlers/upload.go,
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// handlers/education_handler.go, apps/web/.../upload-modal/constants.ts, and
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// apps/web/.../CloudUploadModal.tsx — a drift waiting to happen. The frontend
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// now consumes these via GET /api/v1/upload/limits and the backend reads them
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// from env with sane defaults.
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const (
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// DefaultAudioMaxMB is the default upper bound for uploaded audio tracks.
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DefaultAudioMaxMB = 100
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// DefaultImageMaxMB is the default upper bound for cover art / avatars.
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DefaultImageMaxMB = 10
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// DefaultVideoMaxMB is the default upper bound for education videos.
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DefaultVideoMaxMB = 500
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)
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// UploadLimitMB represents a single category's limit and its environment
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// variable override. The bytes form is the authoritative value used for
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// validation; the human form is what we send back to the UI.
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type UploadLimitMB struct {
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Category string
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EnvVar string
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DefaultMB int
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AllowedMIMEs []string
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}
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// AudioLimit, ImageLimit, VideoLimit expose the category definitions used by
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// both the upload handler and the track service. Values are resolved lazily
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// from the environment (no global state) so config changes take effect on
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// the next request without a rebuild.
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var (
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AudioLimit = UploadLimitMB{
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Category: "audio",
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EnvVar: "MAX_UPLOAD_AUDIO_MB",
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DefaultMB: DefaultAudioMaxMB,
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AllowedMIMEs: []string{
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"audio/mpeg",
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"audio/mp3",
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"audio/wav",
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"audio/flac",
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"audio/aac",
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"audio/ogg",
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"audio/m4a",
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},
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}
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ImageLimit = UploadLimitMB{
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Category: "image",
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EnvVar: "MAX_UPLOAD_IMAGE_MB",
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DefaultMB: DefaultImageMaxMB,
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AllowedMIMEs: []string{"image/jpeg", "image/png", "image/gif", "image/webp"},
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}
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VideoLimit = UploadLimitMB{
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Category: "video",
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EnvVar: "MAX_UPLOAD_VIDEO_MB",
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DefaultMB: DefaultVideoMaxMB,
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AllowedMIMEs: []string{"video/mp4", "video/webm", "video/ogg", "video/avi"},
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}
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)
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// Bytes returns the category's current byte limit, honoring the env override.
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// Invalid or negative env values fall back to the compile-time default.
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func (l UploadLimitMB) Bytes() int64 {
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return int64(l.MB()) * 1024 * 1024
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}
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// MB returns the category's current megabyte limit, honoring the env override.
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func (l UploadLimitMB) MB() int {
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if raw := os.Getenv(l.EnvVar); raw != "" {
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if v, err := strconv.Atoi(raw); err == nil && v > 0 {
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return v
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}
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}
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return l.DefaultMB
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}
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// HumanReadable renders the limit in "%dMB" form for UI consumption.
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func (l UploadLimitMB) HumanReadable() string {
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return fmt.Sprintf("%dMB", l.MB())
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}
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