import { getSetting } from "./settings";

const NEXTDOOR_API_URL = "https://ads.nextdoor.com/v1";

async function getNextdoorConfig() {
  const token = await getSetting("NEXTDOOR_API_TOKEN");
  const advertiserId = await getSetting("NEXTDOOR_ADVERTISER_ID");
  return { token, advertiserId };
}

async function nextdoorFetch(query: string, variables: Record<string, unknown> = {}) {
  const { token } = await getNextdoorConfig();
  const res = await fetch(`${NEXTDOOR_API_URL}/graphql`, {
    method: "POST",
    headers: {
      Authorization: `Bearer ${token}`,
      "Content-Type": "application/json",
    },
    body: JSON.stringify({ query, variables }),
  });

  if (!res.ok) {
    const text = await res.text();
    throw new Error(`Nextdoor API error ${res.status}: ${text}`);
  }

  const data = await res.json();
  if (data.errors?.length) {
    throw new Error(`Nextdoor GraphQL error: ${data.errors[0].message}`);
  }

  return data.data;
}

export async function createNextdoorCampaign(
  name: string,
  budget: number,
  schedule: { startDate: string; endDate: string }
) {
  const mutation = `
    mutation CreateCampaign($input: CreateCampaignInput!) {
      createCampaign(input: $input) {
        campaign { id name status }
      }
    }
  `;

  return nextdoorFetch(mutation, {
    input: {
      advertiserId: (await getNextdoorConfig()).advertiserId,
      name,
      objective: "WEBSITE_CONVERSION",
      budget: { amount: budget, currency: "USD" },
      schedule,
    },
  });
}

export async function createNextdoorAdGroup(
  campaignId: string,
  targeting: Record<string, unknown>
) {
  const mutation = `
    mutation CreateAdGroup($input: CreateAdGroupInput!) {
      createAdGroup(input: $input) {
        adGroup { id name status }
      }
    }
  `;

  return nextdoorFetch(mutation, {
    input: {
      campaignId,
      name: "Auto-generated Ad Group",
      targeting,
    },
  });
}

export async function uploadNextdoorCreative(imageUrl: string) {
  const mutation = `
    mutation CreateCreative($input: CreateCreativeInput!) {
      createCreative(input: $input) {
        creative { id status }
      }
    }
  `;

  return nextdoorFetch(mutation, {
    input: {
      advertiserId: (await getNextdoorConfig()).advertiserId,
      imageUrl,
      type: "IMAGE",
    },
  });
}

export async function createNextdoorAd(
  adGroupId: string,
  creativeId: string,
  copy: { headline: string; body: string; ctaText: string; destinationUrl: string }
) {
  const mutation = `
    mutation CreateAd($input: CreateAdInput!) {
      createAd(input: $input) {
        ad { id name status }
      }
    }
  `;

  return nextdoorFetch(mutation, {
    input: {
      adGroupId,
      creativeId,
      headline: copy.headline,
      body: copy.body,
      callToAction: copy.ctaText,
      destinationUrl: copy.destinationUrl,
    },
  });
}