#ifndef ____imapaccounts_h__
# define ____imapaccounts_h__

# include "Tag.h"
# include "ZString.h"
# include "MString.h"
# include <string>
# include <utility>
# include <vector>

namespace jet {

   ///
   /// <imapaccounts action="add|remove|getpassword|gethost|firstuser|list"
   ///                list="$[@_imap_accounts]" host="..." user="..." password="...">
   ///
   /// Pure list-transform tag (no session-variable access of its own,
   /// no IMAP connection) that manages the multi-account list webmail
   /// keeps in the single session variable "_imap_accounts" - the .jet
   /// route wraps each call in <eval name="_imap_accounts"> itself and
   /// <set>s it back, the same separation-of-concerns every other
   /// session variable in this codebase already uses (this tag never
   /// touches Global's session-variable map directly).
   ///
   /// The list's own on-the-wire encoding (semicolon-separated
   /// "base64(host):base64(user):base64(password)" entries) is private
   /// to this tag - callers only ever pass the whole `list` value back
   /// in verbatim and use the returned value the same way, so the
   /// choice of delimiter can't collide with any real username or
   /// password character. Each account can live on its own IMAP server
   /// (see the <imap>/<imaplist>/etc. tags' own optional host/port
   /// keywords), not just the one fixed host in email.cfg.
   ///
   /// action="add": upserts host/user/password (removing any existing
   /// entry for the same user first, so reconnecting with a changed
   /// password or server updates it) - returns the updated encoded list.
   /// action="remove": drops the entry for user, if present - returns
   /// the updated encoded list.
   /// action="getpassword": returns the stored password for user, or
   /// an empty string if not present.
   /// action="gethost": returns the stored host for user, or an empty
   /// string if not present.
   /// action="firstuser": returns the first entry's username, or an
   /// empty string if the list is empty.
   /// action="list": returns JSON ({"accounts":[...],"active":"..."})
   /// - the one client-facing action; "active" echoes the `active`
   /// keyword (typically $[@_imap_user]) back verbatim so the sidebar
   /// can highlight the current one, and never includes any password or
   /// host (unchanged shape from before per-account hosts existed -
   /// nothing client-side needs the host to switch between already-
   /// connected accounts).
   ///
   class __imapaccounts : public Tag {

      struct Account {
         std::string host, user, password;
      };

    public:
      __imapaccounts(coreutils::ZString &in, coreutils::MString &parentOut, Global &global, Tag *parent, Tag *local);

    private:
      static std::vector<Account> decodeList(const std::string &encoded);
      static std::string encodeList(const std::vector<Account> &entries);
      static std::string jsonEscape(const std::string &s);
   };

}

#endif