/**
 * Single source of truth for the case-status lifecycle (UI-B1 / G2).
 *
 * The 17-status manual menu was trimmed to the **10 core statuses** that the
 * pipeline actually sets or that gate real logic. Decorative mid-stage markers
 * (uploading, analyst_verified, research_complete, brainstorming,
 * analysis_enriched, ready_for_writing, drafting) plus the legacy/dead
 * `in_progress` and `qa_failed` were removed — no pipeline code ever set them.
 *
 * Every status consumer (badge, changer, timeline, guide, donut, KPI cards,
 * compose chip) imports the list / labels / phases from here instead of
 * re-declaring its own array. Keep this file in sync with the backend
 * STATUS_ORDER in `mcp-server/src/legal_mcp/tools/cases.py`.
 */

/** Ordered lifecycle — also the order shown in the manual status dropdown. */
export const CASE_STATUSES = [
  "new",
  "processing",
  "documents_ready",
  "outcome_set",
  "direction_approved",
  "qa_review",
  "drafted",
  "exported",
  "reviewed",
  "final",
] as const;

export type CaseStatus = (typeof CASE_STATUSES)[number];

export type PhaseKey = "intake" | "prep" | "thinking" | "writing" | "done";

/** The 5 visual phases the lifecycle collapses into across the app. */
export const PHASES: { key: PhaseKey; label: string; statuses: CaseStatus[] }[] = [
  { key: "intake",   label: "קליטה ועיבוד", statuses: ["new", "processing"] },
  { key: "prep",     label: "הכנת תיק",      statuses: ["documents_ready"] },
  { key: "thinking", label: "ניתוח וכיוון",  statuses: ["outcome_set", "direction_approved"] },
  { key: "writing",  label: "כתיבת טיוטה",   statuses: ["qa_review", "drafted"] },
  { key: "done",     label: "סגירה",         statuses: ["exported", "reviewed", "final"] },
];

/** Which phase a status belongs to (undefined for unknown/legacy values). */
export function phaseOf(status?: CaseStatus | string): PhaseKey | undefined {
  if (!status) return undefined;
  return PHASES.find((p) => (p.statuses as string[]).includes(status))?.key;
}

export const STATUS_LABELS: Record<CaseStatus, string> = {
  new:                "חדש",
  processing:         "בעיבוד",
  documents_ready:    "מסמכים מוכנים",
  outcome_set:        "תוצאה נקבעה",
  direction_approved: "כיוון אושר",
  qa_review:          "בדיקת איכות",
  drafted:            "טיוטה",
  exported:           "יוצא",
  reviewed:           "נבדק",
  final:              "סופי",
};

/**
 * Hebrew labels for the removed/legacy statuses — display-only fallback so a
 * row that hasn't been migrated yet (or arrives from an old client) never
 * renders a raw English slug as a label. These are NOT selectable statuses.
 */
const LEGACY_STATUS_LABELS: Record<string, string> = {
  in_progress:       "בעבודה",
  uploading:         "מעלה",
  analyst_verified:  "ניתוח אומת",
  research_complete: "מחקר הושלם",
  brainstorming:     "סיעור מוחות",
  analysis_enriched: "ניתוח הועמק",
  ready_for_writing: "מוכן לכתיבה",
  drafting:          "בכתיבה",
  qa_failed:         "בדיקת איכות נכשלה",
  qa_passed:         "טיוטה",
};

/**
 * Always-Hebrew label for any status string. Use this everywhere a status is
 * rendered as a label so an unknown/legacy value never leaks an English slug.
 */
export function statusLabel(status?: string): string {
  if (!status) return "";
  return (
    STATUS_LABELS[status as CaseStatus] ??
    LEGACY_STATUS_LABELS[status] ??
    "לא ידוע"
  );
}

export const STATUS_DESCRIPTIONS: Record<CaseStatus, string> = {
  new:                "התיק נוצר וממתין להעלאת מסמכים",
  processing:         "המערכת מעבדת ומנתחת את המסמכים",
  documents_ready:    "כל המסמכים עובדו ומוכנים לעבודה",
  outcome_set:        "נקבעה תוצאה צפויה לערר",
  direction_approved: "כיוון ההחלטה אושר — בהעמקת ניתוח וכתיבה",
  qa_review:          "הטיוטה בבדיקת איכות אוטומטית",
  drafted:            "טיוטה מוכנה לעיון",
  exported:           "ההחלטה יוצאה לקובץ DOCX",
  reviewed:           'ההחלטה נבדקה ע"י היו"ר',
  final:              "החלטה סופית — מוכנה להגשה",
};