import { BaseProvider, providerHttpError } from './base.js';
import { flattenMessageContent } from '../lib/content.js';
const API_BASE = 'https://api.cohere.ai/compatibility/v1';
export class CohereProvider extends BaseProvider {
    platform = 'cohere';
    name = 'Cohere';
    async chatCompletion(apiKey, messages, modelId, options) {
        const body = {
            model: modelId,
            messages: flattenMessageContent(messages),
            temperature: options?.temperature,
            max_tokens: options?.max_tokens,
            top_p: options?.top_p,
            tools: options?.tools,
            tool_choice: options?.tool_choice,
        };
        const res = await this.fetchWithTimeout(`${API_BASE}/chat/completions`, {
            method: 'POST',
            headers: {
                'Authorization': `Bearer ${apiKey}`,
                'Content-Type': 'application/json',
            },
            body: JSON.stringify(body),
        });
        if (!res.ok) {
            const err = await res.json().catch(() => ({}));
            throw providerHttpError(res, `Cohere API error ${res.status}: ${err.error?.message ?? res.statusText}`);
        }
        const data = await res.json();
        data._routed_via = { platform: 'cohere', model: modelId };
        return data;
    }
    async *streamChatCompletion(apiKey, messages, modelId, options) {
        const body = {
            model: modelId,
            messages: flattenMessageContent(messages),
            temperature: options?.temperature,
            max_tokens: options?.max_tokens,
            top_p: options?.top_p,
            tools: options?.tools,
            tool_choice: options?.tool_choice,
            stream: true,
        };
        const res = await this.fetchWithTimeout(`${API_BASE}/chat/completions`, {
            method: 'POST',
            headers: {
                'Authorization': `Bearer ${apiKey}`,
                'Content-Type': 'application/json',
            },
            body: JSON.stringify(body),
        });
        if (!res.ok) {
            const err = await res.json().catch(() => ({}));
            throw providerHttpError(res, `Cohere API error ${res.status}: ${err.error?.message ?? res.statusText}`);
        }
        yield* this.readSseStream(res);
    }
    async validateKey(apiKey) {
        // Transport errors propagate — health.ts marks status='error' without
        // counting toward auto-disable. Only confirmed 401/403 disables a key.
        const res = await this.fetchWithTimeout(`${API_BASE}/models`, {
            method: 'GET',
            headers: { 'Authorization': `Bearer ${apiKey}` },
        }, 10000);
        return res.status !== 401 && res.status !== 403;
    }
}
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