63 lines
2.2 KiB
Go
63 lines
2.2 KiB
Go
package fa
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import (
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"context"
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"fmt"
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"net/url"
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"git.anthrove.art/public/go-fa-api/internal/urls"
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)
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// PostCommentOptions configures a comment post. ParentID is the comment
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// being replied to (0 for a top-level comment on the submission/journal).
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type PostCommentOptions struct {
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ParentID CommentID
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}
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// PostSubmissionComment posts a comment on a submission. Body is BBCode-
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// formatted text (FA's comment markup). Returns nil on success; an
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// [ErrUnauthorized] when called without auth cookies; an
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// [*SystemMessageError] if FA refused the post (rate limiter, blocked
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// user, etc).
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//
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// FA's comment form (`#add_comment_form`) posts to the submission's own
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// URL with fields `action=reply`, `replyto=<parent>`, `reply=<body>`.
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// There is no separate per-form CSRF key auth cookies + Cloudflare
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// clearance are the only gates.
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func (c *Client) PostSubmissionComment(ctx context.Context, id SubmissionID, body string, opts PostCommentOptions, reqOpts ...Option) error {
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if id <= 0 {
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return fmt.Errorf("fa: PostSubmissionComment: id must be > 0")
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}
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return c.postCommentForm(ctx, urls.Submission(int64(id)), body, opts, reqOpts)
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}
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// PostJournalComment posts a comment on a journal. Same form shape as
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// submissions; the form action just points at /journal/{id}/.
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func (c *Client) PostJournalComment(ctx context.Context, id JournalID, body string, opts PostCommentOptions, reqOpts ...Option) error {
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if id <= 0 {
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return fmt.Errorf("fa: PostJournalComment: id must be > 0")
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}
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return c.postCommentForm(ctx, urls.Journal(int64(id)), body, opts, reqOpts)
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}
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// postCommentForm builds the field set #add_comment_form sends. Shared
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// between submission and journal comment posting because FA renders an
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// identical form on both pages.
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func (c *Client) postCommentForm(ctx context.Context, pageURL, body string, opts PostCommentOptions, reqOpts []Option) error {
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if body == "" {
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return fmt.Errorf("fa: PostComment: empty body")
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}
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v := url.Values{}
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v.Set("f", "0")
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v.Set("action", "reply")
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if opts.ParentID > 0 {
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v.Set("replyto", opts.ParentID.String())
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} else {
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v.Set("replyto", "")
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}
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v.Set("reply", body)
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v.Set("submit", "Post Comment")
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_, err := c.postForm(ctx, pageURL, v, reqOpts...)
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return err
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}
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