import {
	IntegrationFieldContent,
	IntegrationFieldContentType,
	isIntegrationFieldContent,
} from "@prismicio/types-internal/lib/content"
import type { IntegrationField } from "@prismicio/types-internal/lib/customtypes"
import {
	DiffChange,
	DiffOperation,
} from "@prismicio/types-internal/lib/customtypes/diff"

import type { NestableMock, Patch } from "../../Mock"
import type { MockConfig } from "../../MockConfig"

export type IntegrationFieldMockConfig = MockConfig<
	IntegrationField["type"],
	string
>

function random(): string {
	return "integration-field-product-id"
}

export const IntegrationFieldMock: NestableMock<
	IntegrationField,
	IntegrationFieldContent,
	IntegrationFieldMockConfig
> = {
	generate(
		_def: IntegrationField,
		config?: IntegrationFieldMockConfig,
	): IntegrationFieldContent {
		const value = config?.value || random()

		return {
			__TYPE__: IntegrationFieldContentType,
			value,
		}
	},

	applyPatch(data: Patch):
		| {
				result: IntegrationFieldContent | undefined
		  }
		| undefined {
		if (data.diff.op === DiffOperation.Removed) return { result: undefined }

		if (data.diff.value.type === "IntegrationFields") {
			const patched = this.patch(
				data.diff,
				isIntegrationFieldContent(data.content) ? data.content : undefined,
				data.config?.type === "IntegrationFields" ? data.config : undefined,
			)
			return { result: patched }
		}
		return
	},

	patch(
		diff: DiffChange<IntegrationField, IntegrationField>,
		_content: IntegrationFieldContent,
		config?: IntegrationFieldMockConfig,
	): IntegrationFieldContent | undefined {
		switch (diff.op) {
			case DiffOperation.Removed:
				return
			case DiffOperation.Updated:
			case DiffOperation.Added:
				return this.generate(diff.value, config)
		}
	},
}