import { isConfirmed, isDryRun, normalizeProjectLocator, pickAuthInput, request } from '../core.ts'
import { asRecord, readOptionalBoolean, readOptionalString, slimIssue } from '../shape.ts'

/**
 * Create a GitLab issue.
 *
 * Pass `dryRun: true` to preview the request. Live creates require `confirm: true`.
 *
 * @example
 * import createGitlabIssue from 'kody:@kody/gitlab/issues/create'
 * const preview = await createGitlabIssue({
 *   project: 'example-group/example-project',
 *   title: 'Example issue',
 *   dryRun: true,
 * })
 */
export default async function createGitlabIssue(params: Record<string, unknown> = {}) {
	const auth = pickAuthInput(params)
	const { projectId, projectPath } = normalizeProjectLocator(params)
	const title = readOptionalString(params.title)
	if (!title) {
		throw new Error('title is required')
	}

	const body: Record<string, unknown> = { title }
	const description = readOptionalString(params.description)
	if (description) body.description = description
	const labels = readOptionalString(params.labels)
	if (labels) body.labels = labels
	const confidential = readOptionalBoolean(params.confidential)
	if (confidential !== undefined) body.confidential = confidential
	if (params.assignee_ids !== undefined) body.assignee_ids = params.assignee_ids
	if (params.milestone_id !== undefined) body.milestone_id = params.milestone_id

	if (isDryRun(params)) {
		return {
			dryRun: true,
			wouldCreate: true,
			projectPath,
			body,
			auth,
		}
	}

	if (!isConfirmed(params)) {
		throw new Error(
			`Creating an issue in ${projectPath} requires dryRun: true (preview) or confirm: true (live write).`,
		)
	}

	const response = await request<Record<string, unknown>>({
		...auth,
		method: 'POST',
		path: `/projects/${projectId}/issues`,
		body,
		throwOnError: true,
		confirm: true,
	})

	return {
		...slimIssue(asRecord(response.data)),
		projectPath,
		auth: response.auth,
	}
}