What causes "marque pelo menos um trecho antes de enviar" in tonhowtf/omniget?

Ensure at least one NewSegment with valid start/end times is present before calling build_payload/validate_segments.

marque pelo menos um trecho antes de enviar

Error message

marque pelo menos um trecho antes de enviar

What it means

Client-side pre-flight check in `validate_segments` that rejects an empty segments list. It mirrors what the SponsorBlock server would reject anyway, so the failure surfaces in Portuguese before spending a submission against the per-account rate limit.

Solutions

Ensure at least one NewSegment with valid start/end times is present before calling build_payload/validate_segments.
In the UI, disable the submit button until a segment is marked.
If validating in a test, populate the segments slice with sample data.

Example fix

// before
validate_segments(&[], duration)?;
// after
let segs = vec![NewSegment { category: "sponsor".into(), action_type: "skip".into(), start: 10.0, end: 30.0, description: String::new() }];
validate_segments(&segs, duration)?;

Defensive patterns

Strategy: validation

Validate before calling

if segments.is_empty() {
    return Err("mark at least one segment before submitting".into());
}

Prevention

Disable the submit button until at least one segment is marked.
Never call build_payload with a programmatically empty Vec.
Validate UI state before constructing the payload.

When it happens

Trigger: Calling `validate_segments(&[], duration)` (directly or via `build_payload`) when the user submitted a segment submission with no marked segments.

Common situations: UI bug clearing the segment list before submit; user clicking 'send' before dragging any timestamps; programmatic callers passing an empty Vec.

Understand the failure class

Background: "must not be empty", "cannot be empty" — required-field validation errors across open-source libraries — this error's family across 41 libraries.

Related errors

AI-assisted analysis of tonhowtf/omniget@8600b91f42 (2026-09-12). Data as JSON: /api/errors/4d9e425bb88e8d62. Report an issue: GitHub.

Appendix: source

Thrown at src-tauri/omniget-core/src/core/tools/sponsorblock.rs:208

    pub start: f64,
    pub end: f64,
    pub category: String,
    #[serde(default = "default_action")]
    pub action_type: String,
    /// Só o capítulo usa: é o título que aparece na barra.
    #[serde(default)]
    pub description: String,
}

fn default_action() -> String {
    "skip".to_string()
}

/// Recusa o que o servidor recusaria, com a mensagem em português e antes de
/// gastar um envio (o limite de taxa é por conta, não por tentativa válida).
pub fn validate_segments(segments: &[NewSegment], duration: f64) -> anyhow::Result<()> {
    if segments.is_empty() {
        return Err(anyhow!("marque pelo menos um trecho antes de enviar"));
    }
    if segments.len() > MAX_SEGMENTS_PER_SUBMIT {
        return Err(anyhow!(
            "no máximo {} trechos por envio",
            MAX_SEGMENTS_PER_SUBMIT
        ));
    }
    for (i, s) in segments.iter().enumerate() {
        let n = i + 1;
        if !CATEGORIES.contains(&s.category.as_str()) {
            return Err(anyhow!(
                "trecho {}: categoria desconhecida ({})",
                n,
                s.category
            ));
        }
        if !ACTION_TYPES.contains(&s.action_type.as_str()) {
            return Err(anyhow!(

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