"use strict";
// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseSplitAttributes = exports.split = void 0;
const attribute_with_cache_key_1 = require("../../../attribute-with-cache-key");
const util_1 = require("../../../util");
const types_1 = require("../types");
const splitProgramMetadata = {
    name: 'Split',
    inputNames: ['A'],
    inputTypes: [types_1.TextureType.unpacked],
};
const split = (inferenceHandler, inputs, attributes) => {
    validateInputs(inputs);
    const axis = util_1.ShapeUtil.normalizeAxis(attributes.axis, inputs[0].dims.length);
    const count = getProgramCount(inferenceHandler, inputs, axis, attributes);
    const output = [];
    for (let i = 0; i < count; ++i) {
        output.push(inferenceHandler.run(Object.assign(Object.assign({}, splitProgramMetadata), { cacheHint: `${attributes.cacheKey};${i}`, get: () => createSplitProgramInfo(inferenceHandler, inputs[0], attributes, axis, i) }), inputs));
    }
    return output;
};
exports.split = split;
const parseSplitAttributes = (node) => {
    const axis = node.attributes.getInt('axis', 0);
    const split = node.attributes.getInts('split', []);
    const numOutputs = node.outputs.length;
    return (0, attribute_with_cache_key_1.createAttributeWithCacheKey)({ axis, split, numOutputs });
};
exports.parseSplitAttributes = parseSplitAttributes;
const getProgramCount = (inferenceHandler, inputs, axis, attributes) => {
    const [, offsets] = util_1.SplitUtil.splitShape(inputs[0].dims, axis, attributes.split, attributes.numOutputs);
    return offsets.length;
};
const createSplitProgramInfo = (inferenceHandler, input, attributes, axis, index) => {
    const [shapes, offsets] = util_1.SplitUtil.splitShape(input.dims, axis, attributes.split, attributes.numOutputs);
    const offset = offsets[index];
    const outputShape = shapes[index];
    const rank = outputShape.length;
    const shaderSource = `
      float process(int indices[${rank}]) {
        indices[${axis}] += ${offset};
        return _A(indices);
      }
    `;
    return Object.assign(Object.assign({}, splitProgramMetadata), { cacheHint: `${attributes.cacheKey}:${index}`, output: { dims: outputShape, type: input.type, textureType: types_1.TextureType.unpacked }, shaderSource });
};
const validateInputs = (inputs) => {
    if (!inputs || inputs.length !== 1) {
        throw new Error('Split requires one input.');
    }
    if (inputs[0].type !== 'int8' && inputs[0].type !== 'uint8' && inputs[0].type !== 'int16' &&
        inputs[0].type !== 'uint16' && inputs[0].type !== 'int32' && inputs[0].type !== 'uint32' &&
        inputs[0].type !== 'float32' && inputs[0].type !== 'float64' && inputs[0].type !== 'bool') {
        throw new Error('Invalid input type.');
    }
};
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