import type { MetricItem } from "@/components/key-metrics"
import {
  type CourseOffering,
  offeringActivityTypes,
} from "@/lib/mock/learning-activities-offerings"

export function learningActivitiesKpiMetrics(rows: CourseOffering[]): MetricItem[] {
  let withForms = 0
  let withLogs = 0
  for (const row of rows) {
    const types = new Set(offeringActivityTypes(row))
    if (types.has("forms-evaluations")) withForms += 1
    if (types.has("patient-log")) withLogs += 1
  }
  const cohorts = new Set(rows.map(r => r.cohort)).size

  return [
    {
      id: "offerings",
      label: "Course offerings",
      value: String(rows.length),
      delta: "",
      trend: "neutral",
      description: "In scope",
    },
    {
      id: "forms",
      label: "With evaluations",
      value: String(withForms),
      delta: "",
      trend: "neutral",
      description: "Linked",
    },
    {
      id: "logs",
      label: "With patient logs",
      value: String(withLogs),
      delta: "",
      trend: "neutral",
      description: "Linked",
    },
    {
      id: "cohorts",
      label: "Cohorts",
      value: String(cohorts),
      delta: "",
      trend: "neutral",
      description: "Represented",
    },
  ]
}