import type { Incident } from "@/types/incident";

const DEFAULT_TEMPLATE = `# [TITRE]

**Date**: [DATE ISO]
**Service**: [SERVICE]
**Status**: [STATUS]
**Tags**: [TAGS]

## Symptom
[SYMPTOM]

## Root Cause
[ROOT_CAUSE]

## Fix Applied
[FIX]
`;

export function renderMarkdown(
  incident: Incident,
  template: string = DEFAULT_TEMPLATE
): string {
  const tagList =
    incident.tags.length > 0 ? incident.tags.join(", ") : "—";

  return template
    .replace("[TITRE]", incident.title || "Untitled")
    .replace("[DATE ISO]", incident.createdAt)
    .replace("[SERVICE]", incident.service || "—")
    .replace("[STATUS]", incident.status)
    .replace("[TAGS]", tagList)
    .replace("[SYMPTOM]", incident.symptom || "—")
    .replace("[ROOT_CAUSE]", incident.rootCause || "—")
    .replace("[FIX]", incident.fix || "—");
}

export function incidentToFilename(incident: Incident): string {
  const date = incident.createdAt.slice(0, 10);
  const slug = incident.title
    .toLowerCase()
    .replace(/[^a-z0-9]+/g, "-")
    .replace(/^-|-$/g, "")
    .slice(0, 50);
  return `incidents/${date}-${slug || "incident"}.md`;
}

export { DEFAULT_TEMPLATE };