// ============================================================================
// Step 00a: Site Audit (DataForSEO + AI)
// ============================================================================

import { PageAuditor } from "@mintel/page-audit";
import type { ConceptState, StepResult, PipelineConfig } from "../types.js";

export async function executeSiteAudit(
    state: ConceptState,
    config: PipelineConfig,
): Promise<StepResult> {
    const startTime = Date.now();

    if (!state.url) {
        return {
            success: true,
            data: null,
            usage: { step: "00a-site-audit", model: "none", promptTokens: 0, completionTokens: 0, cost: 0, durationMs: Date.now() - startTime },
        };
    }

    try {
        const login = process.env.DATA_FOR_SEO_LOGIN || process.env.DATA_FOR_SEO_API_KEY?.split(":")?.[0];
        const password = process.env.DATA_FOR_SEO_PASSWORD || process.env.DATA_FOR_SEO_API_KEY?.split(":")?.slice(1)?.join(":");

        if (!login || !password) {
            console.warn("  ⚠️ Site Audit skipped: DataForSEO credentials missing from environment.");
            return {
                success: true,
                data: null,
                usage: { step: "00a-site-audit", model: "none", promptTokens: 0, completionTokens: 0, cost: 0, durationMs: Date.now() - startTime },
            };
        }

        const auditor = new PageAuditor({
            dataForSeoLogin: login,
            dataForSeoPassword: password,
            openrouterKey: config.openrouterKey,
            outputDir: config.outputDir ? `${config.outputDir}/audits` : undefined,
        });

        // Run audit (max 20 pages for the estimation phase to keep it fast)
        const result = await auditor.audit(state.url, { maxPages: 20 });

        return {
            success: true,
            data: result,
            usage: {
                step: "00a-site-audit",
                model: "dataforseo",
                cost: 0, // DataForSEO cost tracking could be added later
                promptTokens: 0,
                completionTokens: 0,
                durationMs: Date.now() - startTime,
            },
        };
    } catch (err: any) {
        console.warn(`  ⚠️ Site Audit failed, skipping: ${err.message}`);
        return {
            success: true,
            data: null,
            usage: { step: "00a-site-audit", model: "none", promptTokens: 0, completionTokens: 0, cost: 0, durationMs: Date.now() - startTime },
        };
    }
}