import { MachineConfig, MachinePreset, MachinePresetName } from "@trigger.dev/core/v3";
import { defaultMachine, machines } from "~/services/platform.v3.server";
import { logger } from "~/services/logger.server";

export function machinePresetFromConfig(config: unknown): MachinePreset {
  const parsedConfig = MachineConfig.safeParse(config);

  if (!parsedConfig.success) {
    logger.info("Failed to parse machine config", { config });

    return machinePresetFromName("small-1x");
  }

  if (parsedConfig.data.preset) {
    return machinePresetFromName(parsedConfig.data.preset);
  }

  if (parsedConfig.data.cpu && parsedConfig.data.memory) {
    const name = derivePresetNameFromValues(parsedConfig.data.cpu, parsedConfig.data.memory);

    return machinePresetFromName(name);
  }

  return machinePresetFromName("small-1x");
}

export function machinePresetFromName(name: MachinePresetName): MachinePreset {
  return {
    name,
    ...machines[name],
  };
}

export function machinePresetFromRun(run: { machinePreset: string | null }): MachinePreset | null {
  const presetName = MachinePresetName.safeParse(run.machinePreset).data;

  if (!presetName) {
    return null;
  }

  return machinePresetFromName(presetName);
}

// Finds the smallest machine preset name that satisfies the given CPU and memory requirements
function derivePresetNameFromValues(cpu: number, memory: number): MachinePresetName {
  for (const [name, preset] of Object.entries(machines)) {
    if (preset.cpu >= cpu && preset.memory >= memory) {
      return name as MachinePresetName;
    }
  }

  return defaultMachine;
}

export function allMachines(): Record<string, MachinePreset> {
  return Object.fromEntries(
    Object.entries(machines).map(([name, preset]) => [
      name,
      {
        name: name as MachinePresetName,
        ...preset,
      },
    ])
  );
}
