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Add basic implementation of geometry type and subtypes #90

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Add basic implementation of geometry type and subtypes #90

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71 changes: 68 additions & 3 deletions lib/type-mapper.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@ const BOOLEAN = { type: 'boolean' };
const INTEGER = { type: 'integer' };
const NUMBER = { type: 'number' };
const STRING = { type: 'string' };
const GEOMETRY = { type: 'object' };
const ANY = { anyOf: [OBJECT, ARRAY, BOOLEAN, INTEGER, NUMBER, STRING] };

/**
Expand Down Expand Up @@ -186,9 +187,73 @@ class TypeMapper {
// @todo GEOMETRY('POINT', 4326)
// ----------------------------------------------------------------------
case 'GEOMETRY': {
throw new TypeError(
'sequelize-to-json-schemas has not yet implemented the GEOMETRY DataType',
);
const geometrySubType = properties.type?.options?.type?.toUpperCase();

result = {
...GEOMETRY,
required: ['type', 'coordinates'],
properties: {
type: {
type: 'string',
enum: geometrySubType
? [geometrySubType[0] + geometrySubType.slice(1).toLowerCase()]
: [
'Point',
'LineString',
'Polygon',
'MultiPoint',
'MultiLineString',
'MultiPolygon',
'GeometryCollection',
],
},
coordinates: { type: 'array' }, // refined below
},
};

switch (geometrySubType) {
case 'POINT':
result.properties.coordinates = {
type: 'array',
items: { type: 'number' },
minItems: 2,
};
break;

case 'MULTIPOINT':
case 'LINESTRING':
result.properties.coordinates = {
type: 'array',
items: { type: 'array', items: { type: 'number' }, minItems: 2 },
};
break;

case 'MULTILINESTRING':
case 'POLYGON':
result.properties.coordinates = {
type: 'array',
items: {
type: 'array',
items: { type: 'array', items: { type: 'number' }, minItems: 2 },
},
};
break;

case 'MULTIPOLYGON':
result.properties.coordinates = {
type: 'array',
items: {
type: 'array',
items: {
type: 'array',
items: { type: 'array', items: { type: 'number' }, minItems: 2 },
},
},
};
break;
}

break;
}

// ----------------------------------------------------------------------
Expand Down