{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://colitur/schema/day-v1.json",
  "title": "colitur liturgical year, v1",
  "type": "object",
  "required": ["rite", "year", "months", "days"],
  "properties": {
    "rite":   { "type": "string" },
    "year":   { "type": "string", "pattern": "^[0-9]{4}$" },
    "months": { "type": "array", "items": { "$ref": "#/$defs/month" } },
    "days":   { "type": "array", "items": { "$ref": "#/$defs/day" } }
  },
  "$defs": {
    "month": {
      "type": "object",
      "required": ["num", "name", "days", "weeks"],
      "properties": {
        "num":   { "type": "string" },
        "name":  { "type": "object", "additionalProperties": { "type": "string" } },
        "days":  { "type": "array", "items": { "$ref": "#/$defs/day" } },
        "weeks": { "type": "array", "items": { "$ref": "#/$defs/week" } }
      }
    },
    "week": {
      "type": "object",
      "required": ["num", "days"],
      "properties": {
        "num":  { "type": "string" },
        "days": { "type": "array", "minItems": 7, "maxItems": 7, "items": { "$ref": "#/$defs/day" } }
      }
    },
    "day": {
      "type": "object",
      "required": ["iso", "dom", "dow", "in_month", "season", "week", "slug",
                   "name", "rank", "colour", "is_white", "is_red", "is_green",
                   "is_violet", "is_rose", "is_black", "subject", "comms",
                   "transferred_in", "transferred_out", "first", "gospel", "last"],
      "properties": {
        "iso":      { "type": "string", "description": "empty on a grid padding cell" },
        "dom":      { "type": "string" },
        "dow":      { "type": "string", "description": "0 = Sunday" },
        "in_month": { "type": "boolean", "description": "false = grid padding cell" },
        "season":   { "type": "string" },
        "week":     { "type": "string", "description": "empty when the rite numbers no week here" },
        "slug":     { "type": "string" },
        "name":     { "type": "object", "additionalProperties": { "type": "string" } },
        "rank":     { "type": "string" },
        "colour":   { "type": "string", "enum": ["white","red","green","violet","rose","black",""] },
        "is_white": { "type": "boolean" }, "is_red":   { "type": "boolean" },
        "is_green": { "type": "boolean" }, "is_violet":{ "type": "boolean" },
        "is_rose":  { "type": "boolean" }, "is_black": { "type": "boolean" },
        "subject":  { "type": "string" },
        "comms": {
          "type": "array",
          "items": {
            "type": "object",
            "required": ["slug", "name", "privileged"],
            "properties": {
              "slug":       { "type": "string" },
              "name":       { "type": "object", "additionalProperties": { "type": "string" } },
              "privileged": { "type": "boolean" }
            }
          }
        },
        "transferred_in":  { "type": "array", "items": { "type": "object" } },
        "transferred_out": { "type": "array", "items": { "type": "object" } },
        "first":  { "type": "string", "description": "Epistle/Lesson citation, never scripture text" },
        "gospel": { "type": "string", "description": "Gospel citation, never scripture text" },
        "last":   { "type": "boolean", "description": "true on the 7th cell of a grid row" }
      }
    }
  }
}