{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://openbrandexchange.com/schemas/v0.1/Materials.json",
  "type": "array",
  "items": {
    "type": "object",
    "properties": {
      "part": {
        "type": "string",
        "description": "Garment part. Recommended keys: main, outer, lining, filling, trim, sole, upper, insole. 'main' when the product has one composition.",
        "pattern": "^[a-z][a-z0-9_]{0,63}$",
        "examples": [
          "main"
        ]
      },
      "fibers": {
        "type": "array",
        "items": {
          "type": "object",
          "properties": {
            "fiber": {
              "type": "string",
              "description": "Fibre key, lowercase English (recommended list in docs/import-format.md#fibres), e.g. cotton, organic_cotton, elastane, wool, merino_wool, polyester, recycled_polyester, polyamide, viscose, linen, silk, leather.",
              "pattern": "^[a-z][a-z0-9_]{0,63}$"
            },
            "percentage": {
              "type": "number",
              "exclusiveMinimum": 0,
              "maximum": 100
            }
          },
          "required": [
            "fiber",
            "percentage"
          ],
          "additionalProperties": false,
          "patternProperties": {
            "^x-[a-z0-9]+-[a-z0-9_-]+$": true
          }
        },
        "minItems": 1,
        "description": "Percentages of one part SHOULD sum to 100."
      }
    },
    "required": [
      "part",
      "fibers"
    ],
    "additionalProperties": false,
    "patternProperties": {
      "^x-[a-z0-9]+-[a-z0-9_-]+$": true
    }
  },
  "title": "Materials",
  "description": "Fibre composition per part (textile labelling regulation / DPP ready)."
}