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share: upload a .diff/.patch as a diff pin, with --title and --desc #5

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share: upload a .diff/.patch as a diff pin, with --title and --desc #5

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46 changes: 42 additions & 4 deletions main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -83,7 +83,8 @@ func usage() {

Usage:
pin login [--device] Sign in via Google. Use --device on SSH/headless.
pin share <file> Upload an HTML or MDX file. Prints the share URL.
pin share <file> Upload an HTML, MDX or .diff/.patch file. Prints the share URL.
A diff takes --title and --desc (markdown, the PR description).
pin get <id-or-url> Fetch a share's MDX source to stdout. --html for
the rendered HTML form.
pin publish <id-or-url> Make a share publicly viewable (no login) via a
Expand Down Expand Up @@ -396,10 +397,29 @@ func runWhoami(_ []string) int {
// ----- share -----

func runShare(args []string) int {
if len(args) != 1 {
fmt.Fprintln(os.Stderr, "usage: pin share <file>")
// pin share <file> [--title T] [--desc D]. --title and --desc apply to a .diff/.patch: the server renders a
// diff with an optional banner title and a markdown PR description (X-Pin-Title, X-Pin-Description).
var file, title, desc string
for i := 0; i < len(args); i++ {
switch {
case args[i] == "--title" && i+1 < len(args):
title = args[i+1]
i++
case args[i] == "--desc" && i+1 < len(args):
desc = args[i+1]
i++
case file == "":
file = args[i]
default:
fmt.Fprintln(os.Stderr, "usage: pin share <file> [--title T] [--desc D]")
return 2
}
}
if file == "" {
fmt.Fprintln(os.Stderr, "usage: pin share <file> [--title T] [--desc D]")
return 2
}
args = []string{file}
body, err := os.ReadFile(args[0])
if err != nil {
fmt.Fprintf(os.Stderr, "pin share: %v\n", err)
Expand All @@ -425,14 +445,32 @@ func runShare(args []string) int {
// agents can fetch via GET /p/{id}.mdx instead of paying tokens for
// the rendered markup.
contentType := "text/html; charset=utf-8"
if strings.HasSuffix(strings.ToLower(args[0]), ".mdx") {
lower := strings.ToLower(args[0])
isDiff := strings.HasSuffix(lower, ".diff") || strings.HasSuffix(lower, ".patch")
switch {
case strings.HasSuffix(lower, ".mdx"):
contentType = "text/mdx; charset=utf-8"
case isDiff:
// A patch renders as a side-by-side diff (diffview), with the PR description as markdown.
contentType = "text/x-diff; charset=utf-8"
}
if !isDiff && (title != "" || desc != "") {
fmt.Fprintln(os.Stderr, "pin share: --title and --desc apply to a .diff or .patch")
return 2
}

req, _ := http.NewRequestWithContext(ctx, http.MethodPut, c.Issuer+"/api/pins", bytes.NewReader(body))
req.Header.Set("Content-Type", contentType)
req.Header.Set("Authorization", "Bearer "+c.AccessToken)
req.Header.Set("X-Agent", agent())
if title != "" {
req.Header.Set("X-Pin-Title", title)
}
if desc != "" {
// Headers cannot carry newlines, so the description travels base64-encoded, which the server decodes.
req.Header.Set("X-Pin-Description", base64.StdEncoding.EncodeToString([]byte(desc)))
req.Header.Set("X-Pin-Description-Encoding", "base64")
}

resp, err := http.DefaultClient.Do(req)
if err != nil {
Expand Down
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