{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://prezograph.dev/schema/deck-2.0.json",
  "title": "Prezograph deck",
  "type": "object",
  "required": ["schemaVersion", "meta", "entities", "scenes"],
  "properties": {
    "schemaVersion": { "const": "2.0" },
    "meta": {
      "type": "object",
      "required": ["title"],
      "properties": {
        "title": { "type": "string", "minLength": 1 },
        "author": { "type": "string" },
        "event": { "type": "string" },
        "date": { "type": "string" },
        "asOf": { "type": "string" },
        "repository": { "type": "string", "format": "uri" }
      },
      "additionalProperties": true
    },
    "entities": {
      "type": "object",
      "additionalProperties": {
        "type": "object",
        "required": ["title"],
        "properties": {
          "title": { "type": "string", "minLength": 1 },
          "sub": { "type": "string" },
          "body": { "type": "string" },
          "tip": { "type": "string" },
          "source": { "type": "string", "format": "uri" },
          "sourceDate": { "type": "string" }
        },
        "additionalProperties": false
      }
    },
    "scenes": {
      "type": "array",
      "minItems": 1,
      "items": { "$ref": "#/$defs/scene" }
    },
    "connections": {
      "type": "array",
      "items": { "$ref": "#/$defs/edge" }
    },
    "theme": {
      "type": "object",
      "properties": {
        "colors": {
          "type": "object",
          "additionalProperties": { "type": "string", "pattern": "^#[0-9a-fA-F]{6}$" }
        }
      },
      "additionalProperties": true
    }
  },
  "$defs": {
    "pair": {
      "type": "array",
      "prefixItems": [{ "type": "number" }, { "type": "number" }],
      "minItems": 2,
      "maxItems": 2
    },
    "instance": {
      "type": "object",
      "required": ["id", "entity", "pos"],
      "properties": {
        "id": { "type": "string" },
        "entity": { "type": "string" },
        "pos": { "$ref": "#/$defs/pair" },
        "kind": { "type": "string" },
        "w": { "type": "number" },
        "r": { "type": "number" },
        "visual": { "enum": ["network7", "table7", "jsonSnippet"] }
      },
      "additionalProperties": false
    },
    "edge": {
      "type": "object",
      "required": ["from", "to"],
      "properties": {
        "id": { "type": "string", "pattern": "^[a-zA-Z][a-zA-Z0-9_.:-]*$" },
        "from": { "type": "string" },
        "to": { "type": "string" },
        "label": { "type": "string" },
        "kind": { "type": "string" },
        "curve": { "type": "number" }
      },
      "additionalProperties": false
    },
    "beat": {
      "type": "object",
      "required": ["id", "show"],
      "properties": {
        "id": { "type": "string" },
        "label": { "type": "string" },
        "caption": { "type": "string" },
        "show": { "type": "array", "items": { "type": "string" } },
        "focus": { "type": "array", "items": { "type": "string" } },
        "revealOrder": { "type": "array", "items": { "type": "string" } }
      },
      "additionalProperties": false
    },
    "overlay": {
      "type": "object",
      "properties": {
        "position": { "const": "center" },
        "shape": { "const": "slide" },
        "aspectRatio": { "const": "16:9" },
        "title": { "type": "string", "minLength": 1 },
        "caption": { "type": "string" },
        "background": {
          "type": "object",
          "required": ["type"],
          "properties": {
            "type": { "const": "overviewTour" },
            "dim": { "type": "number", "minimum": 0, "maximum": 0.8 },
            "interactive": { "type": "boolean" }
          },
          "additionalProperties": false
        },
        "tour": {
          "type": "object",
          "properties": {
            "cycles": { "type": "integer", "minimum": 1, "maximum": 5 },
            "moveMs": { "type": "number", "minimum": 100, "maximum": 10000 },
            "pauseMs": { "type": "number", "minimum": 0, "maximum": 10000 },
            "endBehavior": { "enum": ["hold", "loop"] }
          },
          "additionalProperties": false
        }
      },
      "dependentRequired": {
        "tour": ["background"]
      },
      "additionalProperties": false
    },
    "scene": {
      "type": "object",
      "required": ["id", "title", "anchor", "instances"],
      "properties": {
        "id": { "type": "string" },
        "title": { "type": "string", "minLength": 1 },
        "caption": { "type": "string" },
        "overlay": { "$ref": "#/$defs/overlay" },
        "anchor": { "$ref": "#/$defs/pair" },
        "instances": { "type": "array", "minItems": 1, "items": { "$ref": "#/$defs/instance" } },
        "edges": { "type": "array", "items": { "$ref": "#/$defs/edge" } },
        "beats": { "type": "array", "items": { "$ref": "#/$defs/beat" } },
        "layout": {
          "type": "object",
          "properties": {
            "fitMargin": { "type": "number", "minimum": 0 },
            "pushMargin": { "type": "number", "minimum": 0 },
            "zoomMax": { "type": "number", "minimum": 0 },
            "floatAmp": { "type": "number", "minimum": 0 },
            "minReadableScale": { "type": "number", "minimum": 0 },
            "noCard": { "type": "boolean" }
          },
          "additionalProperties": false
        }
      },
      "additionalProperties": false
    }
  }
}