mirror of
https://github.com/tiennm99/miti99.git
synced 2026-08-24 10:27:25 +00:00
tiennm99
a44d13a437
One Go binary with a subcommand per former script, invoked as 'go run ./scripts/newsletter <command>' from repo root. Stdlib only; publications config embedded via go:embed (go run recompiles on edit). Behavior parity verified side-by-side before deleting the JS — see plans/reports/parity-260818-newsletter-go-migration-report.md. Permissions: allow 'Bash(go *)', drop 'Bash(node *)' and the redundant 'Write(content)' rule (Edit rules cover all file-editing tools).
64 lines
1.8 KiB
Go
64 lines
1.8 KiB
Go
// Detect whether an image URL is Substack-hosted and extract its S3 image UUID.
|
|
// Usage: go run ./scripts/newsletter detect-image-source "<image-url>"
|
|
// Output: JSON { original_url, clean_url, isSubstack, uuid?, innerUrl? }
|
|
//
|
|
// Substack images are usually served via a CDN wrapper:
|
|
//
|
|
// https://substackcdn.com/image/fetch/$s_!x!,.../https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F<uuid>_WxH.png
|
|
//
|
|
// The publication is NOT encoded in the URL — only the image identity (uuid) is.
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"net/url"
|
|
"os"
|
|
"strings"
|
|
)
|
|
|
|
// extractInnerURL pulls the inner S3 URL out of a substackcdn /image/fetch/
|
|
// wrapper (if present).
|
|
func extractInnerURL(target string) string {
|
|
if marker := strings.Index(target, "/https%3A%2F%2F"); marker != -1 {
|
|
decoded, err := url.PathUnescape(target[marker+1:])
|
|
if err != nil {
|
|
return target[marker+1:]
|
|
}
|
|
return decoded
|
|
}
|
|
// Some forms embed a plain (already-decoded) inner https URL.
|
|
if len(target) > 8 {
|
|
if plain := strings.Index(target[8:], "/https://"); plain != -1 {
|
|
return target[8+plain+1:]
|
|
}
|
|
}
|
|
return target
|
|
}
|
|
|
|
type detectImageOutput struct {
|
|
OriginalURL string `json:"original_url"`
|
|
CleanURL string `json:"clean_url"`
|
|
IsSubstack bool `json:"isSubstack"`
|
|
UUID string `json:"uuid,omitempty"`
|
|
InnerURL string `json:"innerUrl,omitempty"`
|
|
}
|
|
|
|
func runDetectImageSource(args []string) {
|
|
if len(args) < 1 || args[0] == "" {
|
|
fmt.Fprintln(os.Stderr, "Usage: go run ./scripts/newsletter detect-image-source <image-url>")
|
|
os.Exit(1)
|
|
}
|
|
target := args[0]
|
|
|
|
out := detectImageOutput{
|
|
OriginalURL: target,
|
|
CleanURL: cleanURL(target),
|
|
IsSubstack: isSubstackImage(target),
|
|
}
|
|
if out.IsSubstack {
|
|
out.UUID = substackImageUUID(target)
|
|
out.InnerURL = extractInnerURL(target)
|
|
}
|
|
printJSON(out)
|
|
}
|