// src/octoprint-client.ts
// OctoPrint REST API client

export interface OctoPrintSettings {
  host: string;      // e.g. "http://octopi.local" or "http://192.168.1.100"
  port: string;      // e.g. "80" or "5000"
  apiKey: string;    // OctoPrint API key
}

export interface PrinterState {
  state: {
    text: string;
    flags: {
      operational: boolean;
      paused: boolean;
      printing: boolean;
      pausing: boolean;
      cancelling: boolean;
      sdReady: boolean;
      error: boolean;
      ready: boolean;
      closedOrError: boolean;
    };
  };
  temperature?: {
    tool0?: { actual: number; target: number };
    bed?: { actual: number; target: number };
  };
}

export interface JobState {
  job: {
    file: { name: string | null };
    estimatedPrintTime: number | null;
  };
  progress: {
    completion: number | null;
    printTimeLeft: number | null;
    printTime: number | null;
  };
  state: string;
}

export interface ConnectionState {
  current: {
    baudrate: number | null;
    port: string | null;
    printerProfile: string;
    state: string;
  };
}

export interface PsuControlState {
  isPSUOn: boolean;
}

export class OctoPrintClient {
  private baseUrl: string;
  private apiKey: string;

  constructor(settings: OctoPrintSettings) {
    const port = settings.port ? `:${settings.port}` : "";
    this.baseUrl = `${settings.host}${port}/api`;
    this.apiKey = settings.apiKey;
  }

  private get headers(): Record<string, string> {
    return {
      "X-Api-Key": this.apiKey,
      "Content-Type": "application/json",
    };
  }

  async getPrinterState(): Promise<PrinterState> {
    const res = await fetch(`${this.baseUrl}/printer`, {
      headers: this.headers,
    });
    if (!res.ok) throw new Error(`HTTP ${res.status}: ${res.statusText}`);
    return res.json() as Promise<PrinterState>;
  }

  async getJobState(): Promise<JobState> {
    const res = await fetch(`${this.baseUrl}/job`, {
      headers: this.headers,
    });
    if (!res.ok) throw new Error(`HTTP ${res.status}: ${res.statusText}`);
    return res.json() as Promise<JobState>;
  }

  async getConnectionState(): Promise<ConnectionState> {
    const res = await fetch(`${this.baseUrl}/connection`, {
      headers: this.headers,
    });
    if (!res.ok) throw new Error(`HTTP ${res.status}: ${res.statusText}`);
    return res.json() as Promise<ConnectionState>;
  }

  async pausePrint(): Promise<void> {
    await fetch(`${this.baseUrl}/job`, {
      method: "POST",
      headers: this.headers,
      body: JSON.stringify({ command: "pause", action: "toggle" }),
    });
  }

  async cancelPrint(): Promise<void> {
    await fetch(`${this.baseUrl}/job`, {
      method: "POST",
      headers: this.headers,
      body: JSON.stringify({ command: "cancel" }),
    });
  }

  async homeAxes(axes: string[] = ["x", "y", "z"]): Promise<void> {
    await fetch(`${this.baseUrl}/printer/printhead`, {
      method: "POST",
      headers: this.headers,
      body: JSON.stringify({ command: "home", axes }),
    });
  }

  async setTemperature(tool: "tool0" | "bed", target: number): Promise<void> {
    if (tool === "bed") {
      await fetch(`${this.baseUrl}/printer/bed`, {
        method: "POST",
        headers: this.headers,
        body: JSON.stringify({ command: "target", target }),
      });
    } else {
      await fetch(`${this.baseUrl}/printer/tool`, {
        method: "POST",
        headers: this.headers,
        body: JSON.stringify({ command: "target", targets: { [tool]: target } }),
      });
    }
  }

  async getPSUState(): Promise<PsuControlState> {
    const res = await fetch(`${this.baseUrl}/plugin/psucontrol`, {
      headers: this.headers,
    });
    if (!res.ok) throw new Error(`HTTP ${res.status}: ${res.statusText}`);
    return res.json() as Promise<PsuControlState>;
  }

  async turnPSUOn(): Promise<void> {
    await fetch(`${this.baseUrl}/plugin/psucontrol`, {
      method: "POST",
      headers: this.headers,
      body: JSON.stringify({ command: "turnPSUOn" }),
    });
  }

  async turnPSUOff(): Promise<void> {
    await fetch(`${this.baseUrl}/plugin/psucontrol`, {
      method: "POST",
      headers: this.headers,
      body: JSON.stringify({ command: "turnPSUOff" }),
    });
  }

  async testConnection(): Promise<boolean> {
    try {
      const res = await fetch(`${this.baseUrl}/version`, { headers: this.headers });
      return res.ok;
    } catch {
      return false;
    }
  }
}

export function formatTime(seconds: number | null): string {
  if (seconds === null || seconds === undefined) return "--:--";
  const h = Math.floor(seconds / 3600);
  const m = Math.floor((seconds % 3600) / 60);
  if (h > 0) return `${h}h ${m}m`;
  return `${m}m`;
}