import { getSiteIntegrations } from '../payload/index.js';
import { graphAdapter } from './graphAdapter.js';
import { panelSmtpAdapter } from './panelSmtpAdapter.js';
/** True when the agency Graph credentials are present in the environment. */ function graphAvailable() {
    return Boolean(process.env.GRAPH_TENANT_ID && process.env.GRAPH_CLIENT_ID && process.env.GRAPH_CLIENT_SECRET && process.env.GRAPH_SENDER);
}
/**
 * Dispatcher email adapter: wired into the config ONCE, but picks the transport
 * (SMTP or Graph) per send by reading `emailTransport` from SiteIntegrations.
 * This is what makes the choice switchable in the panel — Payload builds the
 * email adapter at boot and can't swap it at runtime, so instead of choosing
 * between two adapters at boot we install one that delegates on every send.
 *
 * Availability guard: Graph only runs if its agency credentials exist in env
 * (this is *our* Exchange). If the panel says 'graph' but env isn't set up,
 * we DON'T silently fail — we log clearly and fall back to SMTP, so a client
 * flipping the switch without the backing config still gets mail out (over SMTP)
 * rather than silent nothing. If neither is usable, the send reports an error.
 *
 * @example
 * // payload.config.ts
 * import { mailAdapter } from '@intecion/ipal-kit'
 * email: mailAdapter()
 */ export const mailAdapter = (args = {})=>(deps)=>{
        // Build both delegates once; each still resolves its own config per send.
        const smtp = panelSmtpAdapter({
            fallbackFromAddress: args.fallbackFromAddress,
            fallbackFromName: args.fallbackFromName,
            ...args.smtp
        })(deps);
        const graph = graphAdapter({
            fallbackFromAddress: args.fallbackFromAddress,
            fallbackFromName: args.fallbackFromName,
            ...args.graph
        })(deps);
        const { payload } = deps;
        return {
            name: 'ipal-mail-dispatcher',
            defaultFromAddress: smtp.defaultFromAddress,
            defaultFromName: smtp.defaultFromName,
            sendEmail: async (message)=>{
                const settings = await getSiteIntegrations(payload);
                const choice = settings.emailTransport ?? 'smtp';
                if (choice === 'graph') {
                    if (graphAvailable()) {
                        return graph.sendEmail(message);
                    }
                    // Panel asked for Graph but the agency creds aren't configured for
                    // this project. Fall back to SMTP rather than silently dropping mail.
                    payload.logger.warn('[ipal] Transport set to Graph but GRAPH_* env vars are missing; falling back to SMTP.');
                    return smtp.sendEmail(message);
                }
                return smtp.sendEmail(message);
            }
        };
    };

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