import {httpStatusToCloudError, RuntimeUnavailableError} from '../cloud-spi/errors'

export type LightsailStaticDeployment = {status: 'deployed'; files: number}
export type LightsailNodeDeployment = {status: 'deployed'; files: number; port: number; releaseId: string}

export async function deployLightsailStaticFiles(instanceName: string, form: FormData): Promise<LightsailStaticDeployment> {
    const endpoint = process.env.FLOCI_ENDPOINT
    if (!endpoint) throw new RuntimeUnavailableError('TheCloud diagnostics are unavailable')

    let response: Response
    try {
        response = await fetch(new URL(`/_floci/diagnostics/lightsail/instances/${encodeURIComponent(instanceName)}/static-files`, endpoint).toString(), {
            method: 'POST', body: form, redirect: 'error', signal: AbortSignal.timeout(30_000),
        })
    } catch (error) {
        throw new RuntimeUnavailableError('TheCloud diagnostics are unavailable', {cause: error})
    }
    const body = await response.json().catch(() => ({})) as {message?: unknown; files?: unknown; status?: unknown}
    if (!response.ok) throw httpStatusToCloudError(response.status, typeof body.message === 'string' ? body.message : 'Static file deployment failed')
    if (body.status !== 'deployed' || typeof body.files !== 'number') {
        throw new RuntimeUnavailableError('TheCloud diagnostics returned an invalid deployment response')
    }
    return {status: 'deployed', files: body.files}
}

export async function deployLightsailNodeApplication(instanceName: string, form: FormData): Promise<LightsailNodeDeployment> {
    const endpoint = process.env.FLOCI_ENDPOINT
    if (!endpoint) throw new RuntimeUnavailableError('TheCloud diagnostics are unavailable')

    let response: Response
    try {
        response = await fetch(new URL(`/_floci/diagnostics/lightsail/instances/${encodeURIComponent(instanceName)}/node-application`, endpoint).toString(), {
            method: 'POST', body: form, redirect: 'error', signal: AbortSignal.timeout(360_000),
        })
    } catch (error) {
        throw new RuntimeUnavailableError('TheCloud diagnostics are unavailable', {cause: error})
    }
    const body = await response.json().catch(() => ({})) as {message?: unknown; files?: unknown; status?: unknown; port?: unknown; releaseId?: unknown}
    if (!response.ok) throw httpStatusToCloudError(response.status, typeof body.message === 'string' ? body.message : 'Node.js deployment failed')
    if (body.status !== 'deployed' || typeof body.files !== 'number' || typeof body.port !== 'number' || typeof body.releaseId !== 'string') {
        throw new RuntimeUnavailableError('TheCloud diagnostics returned an invalid Node.js deployment response')
    }
    return {status: 'deployed', files: body.files, port: body.port, releaseId: body.releaseId}
}