import Foundation

// MARK: - OpenAI web error messaging

extension UsageStore {
    func openAIDashboardFriendlyError(
        body: String,
        targetEmail: String?,
        cookieImportStatus: String?) -> String?
    {
        let trimmed = body.trimmingCharacters(in: .whitespacesAndNewlines)
        let status = cookieImportStatus?.trimmingCharacters(in: .whitespacesAndNewlines)
        if trimmed.isEmpty {
            return [
                "OpenAI web dashboard returned an empty page.",
                "Sign in to chatgpt.com and update OpenAI cookies in Providers → Codex.",
            ].joined(separator: " ")
        }

        let lower = trimmed.lowercased()
        let looksLikePublicLanding = lower.contains("skip to content")
            && (lower.contains("about") || lower.contains("openai") || lower.contains("chatgpt"))
        let looksLoggedOut = lower.contains("sign in")
            || lower.contains("log in")
            || lower.contains("create account")
            || lower.contains("continue with google")
            || lower.contains("continue with apple")
            || lower.contains("continue with microsoft")

        guard looksLikePublicLanding || looksLoggedOut else { return nil }
        let emailLabel = targetEmail?.trimmingCharacters(in: .whitespacesAndNewlines)
        let targetLabel = (emailLabel?.isEmpty == false) ? emailLabel! : "your OpenAI account"
        if let status, !status.isEmpty {
            if status.contains("cookies do not match Codex account")
                || status.localizedCaseInsensitiveContains("cookie import failed")
            {
                return [
                    status,
                    "Sign in to chatgpt.com as \(targetLabel), then update OpenAI cookies in Providers → Codex.",
                ].joined(separator: " ")
            }
        }
        return [
            "OpenAI web dashboard returned a public page (not signed in).",
            "Sign in to chatgpt.com as \(targetLabel), then update OpenAI cookies in Providers → Codex.",
        ].joined(separator: " ")
    }
}