// Provider docking: add new providers here (order + meta + aliases), then
// register the plugin in src/providers/plugins/index.ts and keep protocol IDs in sync.
export const CHAT_PROVIDER_ORDER = [
  "telegram",
  "whatsapp",
  "discord",
  "slack",
  "signal",
  "imessage",
  "msteams",
] as const;

export type ChatProviderId = (typeof CHAT_PROVIDER_ORDER)[number];

export const PROVIDER_IDS = [...CHAT_PROVIDER_ORDER] as const;

export const DEFAULT_CHAT_PROVIDER: ChatProviderId = "whatsapp";

export type ChatProviderMeta = {
  id: ChatProviderId;
  label: string;
  selectionLabel: string;
  docsPath: string;
  docsLabel?: string;
  blurb: string;
  // Provider docking: selection-line formatting for onboarding prompts.
  // Keep this data-driven to avoid provider-specific branches in shared code.
  selectionDocsPrefix?: string;
  selectionDocsOmitLabel?: boolean;
  selectionExtras?: string[];
};

const WEBSITE_URL = "https://clawd.bot";

const CHAT_PROVIDER_META: Record<ChatProviderId, ChatProviderMeta> = {
  telegram: {
    id: "telegram",
    label: "Telegram",
    selectionLabel: "Telegram (Bot API)",
    docsPath: "/telegram",
    docsLabel: "telegram",
    blurb:
      "simplest way to get started — register a bot with @BotFather and get going.",
    selectionDocsPrefix: "",
    selectionDocsOmitLabel: true,
    selectionExtras: [WEBSITE_URL],
  },
  whatsapp: {
    id: "whatsapp",
    label: "WhatsApp",
    selectionLabel: "WhatsApp (QR link)",
    docsPath: "/whatsapp",
    docsLabel: "whatsapp",
    blurb: "works with your own number; recommend a separate phone + eSIM.",
  },
  discord: {
    id: "discord",
    label: "Discord",
    selectionLabel: "Discord (Bot API)",
    docsPath: "/discord",
    docsLabel: "discord",
    blurb: "very well supported right now.",
  },
  slack: {
    id: "slack",
    label: "Slack",
    selectionLabel: "Slack (Socket Mode)",
    docsPath: "/slack",
    docsLabel: "slack",
    blurb: "supported (Socket Mode).",
  },
  signal: {
    id: "signal",
    label: "Signal",
    selectionLabel: "Signal (signal-cli)",
    docsPath: "/signal",
    docsLabel: "signal",
    blurb:
      'signal-cli linked device; more setup (David Reagans: "Hop on Discord.").',
  },
  imessage: {
    id: "imessage",
    label: "iMessage",
    selectionLabel: "iMessage (imsg)",
    docsPath: "/imessage",
    docsLabel: "imessage",
    blurb: "this is still a work in progress.",
  },
  msteams: {
    id: "msteams",
    label: "MS Teams",
    selectionLabel: "Microsoft Teams (Bot Framework)",
    docsPath: "/msteams",
    docsLabel: "msteams",
    blurb: "supported (Bot Framework).",
  },
};

export const CHAT_PROVIDER_ALIASES: Record<string, ChatProviderId> = {
  imsg: "imessage",
  teams: "msteams",
};

const normalizeProviderKey = (raw?: string | null): string | undefined => {
  const normalized = raw?.trim().toLowerCase();
  return normalized || undefined;
};

export function listChatProviders(): ChatProviderMeta[] {
  return CHAT_PROVIDER_ORDER.map((id) => CHAT_PROVIDER_META[id]);
}

export function listChatProviderAliases(): string[] {
  return Object.keys(CHAT_PROVIDER_ALIASES);
}

export function getChatProviderMeta(id: ChatProviderId): ChatProviderMeta {
  return CHAT_PROVIDER_META[id];
}

export function normalizeChatProviderId(
  raw?: string | null,
): ChatProviderId | null {
  const normalized = normalizeProviderKey(raw);
  if (!normalized) return null;
  const resolved = CHAT_PROVIDER_ALIASES[normalized] ?? normalized;
  return CHAT_PROVIDER_ORDER.includes(resolved as ChatProviderId)
    ? (resolved as ChatProviderId)
    : null;
}

// Provider docking: prefer this helper in shared code. Importing from
// `src/providers/plugins/*` can eagerly load provider implementations.
export function normalizeProviderId(
  raw?: string | null,
): ChatProviderId | null {
  return normalizeChatProviderId(raw);
}

export function formatProviderPrimerLine(meta: ChatProviderMeta): string {
  return `${meta.label}: ${meta.blurb}`;
}

export function formatProviderSelectionLine(
  meta: ChatProviderMeta,
  docsLink: (path: string, label?: string) => string,
): string {
  const docsPrefix = meta.selectionDocsPrefix ?? "Docs:";
  const docsLabel = meta.docsLabel ?? meta.id;
  const docs = meta.selectionDocsOmitLabel
    ? docsLink(meta.docsPath)
    : docsLink(meta.docsPath, docsLabel);
  const extras = (meta.selectionExtras ?? []).filter(Boolean).join(" ");
  return `${meta.label} — ${meta.blurb} ${docsPrefix ? `${docsPrefix} ` : ""}${docs}${extras ? ` ${extras}` : ""}`;
}