{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/nasa-mars/main/json-schema/manifest.json",
  "title": "Manifest",
  "description": "Mission manifest for a NASA Mars rover, including launch/landing dates, mission status, and per-sol photo breakdowns.",
  "type": "object",
  "properties": {
    "name": {
      "type": "string",
      "description": "Rover name.",
      "enum": ["Curiosity", "Opportunity", "Spirit", "Perseverance"]
    },
    "landing_date": {
      "type": "string",
      "format": "date",
      "description": "Date the rover landed on Mars (YYYY-MM-DD)."
    },
    "launch_date": {
      "type": "string",
      "format": "date",
      "description": "Date the rover launched from Earth (YYYY-MM-DD)."
    },
    "status": {
      "type": "string",
      "enum": ["active", "complete"],
      "description": "Current mission status."
    },
    "max_sol": {
      "type": "integer",
      "minimum": 0,
      "description": "Maximum Martian sol reached and stored in the database."
    },
    "max_date": {
      "type": "string",
      "format": "date",
      "description": "Maximum Earth date reached and stored in the database."
    },
    "total_photos": {
      "type": "integer",
      "minimum": 0,
      "description": "Total photos taken by this rover stored in the database."
    },
    "photos": {
      "type": "array",
      "description": "Per-sol summary of photo counts and cameras used.",
      "items": {
        "$ref": "#/$defs/SolSummary"
      }
    }
  },
  "required": ["name", "landing_date", "launch_date", "status", "max_sol", "max_date", "total_photos", "photos"],
  "$defs": {
    "SolSummary": {
      "title": "SolSummary",
      "description": "Summary of photos taken on a single Martian sol.",
      "type": "object",
      "properties": {
        "sol": {
          "type": "integer",
          "minimum": 0,
          "description": "Martian sol number."
        },
        "earth_date": {
          "type": "string",
          "format": "date",
          "description": "Earth date corresponding to this sol."
        },
        "total_photos": {
          "type": "integer",
          "minimum": 0,
          "description": "Total photos taken on this sol."
        },
        "cameras": {
          "type": "array",
          "description": "Cameras used on this sol.",
          "items": {
            "type": "string"
          }
        }
      },
      "required": ["sol", "earth_date", "total_photos", "cameras"]
    }
  }
}