/** Representative examples only — not a claim of full syllabus launch. */

export type SubjectExample = {
  id: string;
  classLabel: string;
  subject: string;
  chapter: string;
  board: string;
  task: string;
  mode: "tuition" | "studychat" | "learn" | "revision" | "practice" | "correct";
};

export const SUBJECT_EXAMPLES: SubjectExample[] = [
  {
    id: "c10-physics-reflection",
    classLabel: "Class 10",
    subject: "Physics",
    chapter: "Reflection and Refraction",
    board: "Kerala SSLC",
    task: "Ray diagrams for concave mirrors",
    mode: "tuition",
  },
  {
    id: "c10-maths-trig",
    classLabel: "Class 10",
    subject: "Mathematics",
    chapter: "Trigonometry",
    board: "Kerala SSLC",
    task: "Heights and distances — 5-mark pattern",
    mode: "practice",
  },
  {
    id: "c11-physics-plane",
    classLabel: "Class 10",
    subject: "Physics",
    chapter: "Motion in a Plane",
    board: "Kerala SSLC",
    task: "Projectile motion worked example",
    mode: "tuition",
  },
  {
    id: "c11-chem-bond",
    classLabel: "Class 10",
    subject: "Chemistry",
    chapter: "Chemical Bonding",
    board: "Kerala SSLC",
    task: "VSEPR shapes and exam keywords",
    mode: "tuition",
  },
  {
    id: "c12-maths-integrals",
    classLabel: "Class 10",
    subject: "Mathematics",
    chapter: "Integrals",
    board: "Kerala SSLC",
    task: "Definite integrals practice set",
    mode: "practice",
  },
  {
    id: "c12-chem-electro",
    classLabel: "Class 10",
    subject: "Chemistry",
    chapter: "Electrochemistry",
    board: "Kerala SSLC",
    task: "Nernst equation revision queue",
    mode: "revision",
  },
  {
    id: "eng-essay",
    classLabel: "Class 10–12",
    subject: "English",
    chapter: "Essay / long answer",
    board: "Any board",
    task: "Board-style answer correction",
    mode: "correct",
  },
  {
    id: "ss-pyq",
    classLabel: "Class 10",
    subject: "Social Science",
    chapter: "Previous-year patterns",
    board: "Kerala SSLC",
    task: "PYQ analysis for repeated themes",
    mode: "studychat",
  },
  {
    id: "ml-roadmap",
    classLabel: "Any",
    subject: "Learn Anything",
    chapter: "Machine Learning",
    board: "Skill path",
    task: "3-month roadmap · foundations → project",
    mode: "learn",
  },
];

export const LOOP_STAGES = [
  {
    id: "plan",
    label: "Plan",
    title: "Tonight is already chosen",
    body: "Class 10 Chemistry revision is first because yesterday’s test flagged a weak concept that needs another pass.",
    exampleId: "c12-chem-electro",
  },
  {
    id: "learn",
    label: "Learn",
    title: "A real lesson, not a playlist",
    body: "Class 10 Physics opens Reflection and Refraction with ray diagrams, keywords and a short checkpoint.",
    exampleId: "c10-physics-reflection",
  },
  {
    id: "ask",
    label: "Ask",
    title: "Doubts stay in the same desk",
    body: "In StudyChat, an English long-answer is rewritten for board marks with missing keywords highlighted.",
    exampleId: "eng-essay",
  },
  {
    id: "practise",
    label: "Practise",
    title: "Check understanding while it’s fresh",
    body: "Class 10 Mathematics opens a short board-style numerical set after the concept lands.",
    exampleId: "c12-maths-integrals",
  },
  {
    id: "correct",
    label: "Correct",
    title: "Feedback that names the miss",
    body: "Correction shows which step failed, which keywords were missing, and a board-style rewrite.",
    exampleId: "eng-essay",
  },
  {
    id: "revise",
    label: "Revise",
    title: "Weak topics re-enter the queue",
    body: "Missed concepts are scheduled for spaced revision—not left in a forgotten chat thread.",
    exampleId: "c12-chem-electro",
  },
  {
    id: "update",
    label: "Update",
    title: "Tomorrow’s plan moves",
    body: "Because the practice set missed two items, tomorrow opens with repair before the next chapter advances.",
    exampleId: "c10-maths-trig",
  },
] as const;

export function getExample(id: string) {
  return SUBJECT_EXAMPLES.find((e) => e.id === id) ?? SUBJECT_EXAMPLES[0];
}