{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/university-of-warsaw/main/json-schema/university-of-warsaw-course-schema.json",
  "title": "USOS Course",
  "description": "JSON Schema for a University of Warsaw USOS API course object (services/courses/course). Derived from the live USOS API machine-readable reference.",
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "ID of the course."
    },
    "name": {
      "$ref": "#/$defs/LangDict",
      "description": "A LangDict object with the course's name."
    },
    "homepage_url": {
      "type": ["string", "null"],
      "format": "uri",
      "description": "Course's homepage URL, or null if none."
    },
    "profile_url": {
      "type": "string",
      "format": "uri",
      "description": "Course's USOSweb profile URL."
    },
    "is_currently_conducted": {
      "type": "boolean",
      "description": "Indicates if the course is conducted in an active academic term."
    },
    "terms": {
      "type": "array",
      "description": "Academic terms the course was conducted in (newest to oldest).",
      "items": {
        "type": "object",
        "properties": {
          "id": { "type": "string" }
        }
      }
    },
    "fac_id": {
      "type": "string",
      "description": "ID of the faculty which runs this course."
    },
    "lang_id": {
      "type": ["string", "null"],
      "description": "ID of the language the course is conducted in, or null if unknown."
    },
    "ects_credits_simplified": {
      "type": ["number", "null"],
      "description": "Approximate number of ECTS credits, or null if unknown."
    },
    "description": { "$ref": "#/$defs/LangDict" },
    "bibliography": { "$ref": "#/$defs/LangDict" },
    "learning_outcomes": { "$ref": "#/$defs/LangDict" },
    "assessment_criteria": { "$ref": "#/$defs/LangDict" },
    "practical_placement": { "$ref": "#/$defs/LangDict" }
  },
  "required": ["id", "name"],
  "$defs": {
    "LangDict": {
      "type": "object",
      "description": "Language dictionary mapping ISO language codes to localized strings.",
      "properties": {
        "pl": { "type": "string" },
        "en": { "type": "string" }
      }
    }
  }
}