{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://brainwave.invalid/schema/hexagram-content-v1.json",
  "title": "Brainwave local hexagram content package",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "schemaVersion",
    "contentVersion",
    "specialUsageTexts",
    "sources",
    "hexagrams"
  ],
  "properties": {
    "schemaVersion": { "const": 1 },
    "contentVersion": { "type": "string", "minLength": 1 },
    "specialUsageTexts": {
      "type": "object",
      "additionalProperties": false,
      "required": ["qian", "kun"],
      "properties": {
        "qian": { "type": "boolean" },
        "kun": { "type": "boolean" }
      }
    },
    "sources": {
      "type": "array",
      "minItems": 1,
      "items": { "$ref": "#/$defs/source" }
    },
    "hexagrams": {
      "type": "array",
      "minItems": 64,
      "maxItems": 64,
      "items": { "$ref": "#/$defs/hexagram" }
    }
  },
  "$defs": {
    "nonBlankText": {
      "type": "string",
      "minLength": 1,
      "pattern": "\\S"
    },
    "trigram": {
      "enum": ["QIAN", "DUI", "LI", "ZHEN", "XUN", "KAN", "GEN", "KUN"]
    },
    "polarity": {
      "enum": ["YIN", "YANG"]
    },
    "source": {
      "type": "object",
      "additionalProperties": false,
      "required": ["id", "title", "edition", "license", "url"],
      "properties": {
        "id": { "$ref": "#/$defs/nonBlankText" },
        "title": { "$ref": "#/$defs/nonBlankText" },
        "edition": { "$ref": "#/$defs/nonBlankText" },
        "license": { "$ref": "#/$defs/nonBlankText" },
        "url": { "type": "string", "format": "uri" }
      }
    },
    "sixPolarities": {
      "type": "array",
      "minItems": 6,
      "maxItems": 6,
      "items": { "$ref": "#/$defs/polarity" }
    },
    "sixTexts": {
      "type": "array",
      "minItems": 6,
      "maxItems": 6,
      "items": { "$ref": "#/$defs/nonBlankText" }
    },
    "hexagram": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "kingWenNumber",
        "name",
        "symbol",
        "lowerTrigram",
        "upperTrigram",
        "patternBottomUp",
        "judgmentOriginal",
        "judgmentPlain",
        "lineTextsBottomUp",
        "linePlainBottomUp",
        "specialUsageText",
        "sourceRefs"
      ],
      "properties": {
        "kingWenNumber": { "type": "integer", "minimum": 1, "maximum": 64 },
        "name": { "$ref": "#/$defs/nonBlankText" },
        "symbol": { "$ref": "#/$defs/nonBlankText" },
        "lowerTrigram": { "$ref": "#/$defs/trigram" },
        "upperTrigram": { "$ref": "#/$defs/trigram" },
        "patternBottomUp": { "$ref": "#/$defs/sixPolarities" },
        "judgmentOriginal": { "$ref": "#/$defs/nonBlankText" },
        "judgmentPlain": { "$ref": "#/$defs/nonBlankText" },
        "lineTextsBottomUp": { "$ref": "#/$defs/sixTexts" },
        "linePlainBottomUp": { "$ref": "#/$defs/sixTexts" },
        "specialUsageText": {
          "oneOf": [
            { "$ref": "#/$defs/nonBlankText" },
            { "type": "null" }
          ]
        },
        "sourceRefs": {
          "type": "array",
          "minItems": 1,
          "uniqueItems": true,
          "items": { "$ref": "#/$defs/nonBlankText" }
        }
      }
    }
  }
}