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#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <errno.h>

#include "e-corba-utils.h"

#include "evolution-mail-store.h"
#include "evolution-mail-folder.h"
#include "evolution-mail-messagestream.h"

#include "em-message-stream.h"

#include <camel/camel-folder-summary.h>
#include <camel/camel-stream-mem.h>
#include <camel/camel-mime-message.h>

#include <bonobo/bonobo-stream-memory.h>
#include <bonobo/bonobo-i18n.h>
#include <bonobo/bonobo-exception.h>

#include <libedataserver/e-msgport.h>

static CORBA_char *
e_corba_strdup(const char *v)
{
    if (v)
        return CORBA_string_dup(v);
    else
        return CORBA_string_dup("");
}

void
e_mail_property_set_string(Evolution_Mail_Property *prop, const char *name, const char *val)
{
    prop->value._release = CORBA_TRUE;
    prop->value._type = TC_CORBA_string;
    prop->value._value = CORBA_sequence_CORBA_string_allocbuf(1);
    ((char **)prop->value._value)[0] = CORBA_string_dup(val);
    prop->name = CORBA_string_dup(name);
}

void
e_mail_property_set_null(Evolution_Mail_Property *prop, const char *name)
{
    prop->value._release = CORBA_TRUE;
    prop->value._type = TC_null;
    prop->name = CORBA_string_dup(name);
}

void
e_mail_storeinfo_set_store(Evolution_Mail_StoreInfo *si, EvolutionMailStore *store)
{
    si->name = CORBA_string_dup(evolution_mail_store_get_name(store));
    si->uid = CORBA_string_dup(evolution_mail_store_get_uid(store));
    si->store = CORBA_Object_duplicate(bonobo_object_corba_objref((BonoboObject *)store), NULL);
}

void
e_mail_messageinfo_set_message(Evolution_Mail_MessageInfo *mi, CamelMessageInfo *info)
{
    const CamelTag *tag;
    const CamelFlag *flag;
    int i;

    mi->uid = CORBA_string_dup(camel_message_info_uid(info));
    mi->subject = e_corba_strdup(camel_message_info_subject(info));
    mi->to = e_corba_strdup(camel_message_info_to(info));
    mi->from = e_corba_strdup(camel_message_info_from(info));
    mi->flags = camel_message_info_flags(info);

    flag = camel_message_info_user_flags(info);
    mi->userFlags._maximum = camel_flag_list_size((CamelFlag **)&flag);
    mi->userFlags._length = mi->userFlags._maximum;
    if (mi->userFlags._maximum) {
        mi->userFlags._buffer = Evolution_Mail_UserFlags_allocbuf(mi->userFlags._maximum);
        CORBA_sequence_set_release(&mi->userFlags, CORBA_TRUE);

        for (i=0;flag;flag = flag->next,i++) {
            mi->userFlags._buffer[i] = CORBA_string_dup(flag->name);
            g_assert(mi->userFlags._buffer[i]);
        }
    }

    tag = camel_message_info_user_tags(info);
    mi->userTags._maximum = camel_tag_list_size((CamelTag **)&tag);
    mi->userTags._length = mi->userTags._maximum;
    if (mi->userTags._maximum) {
        mi->userTags._buffer = Evolution_Mail_UserTags_allocbuf(mi->userTags._maximum);
        CORBA_sequence_set_release(&mi->userFlags, CORBA_TRUE);

        for (i=0;tag;tag = tag->next,i++) {
            mi->userTags._buffer[i].name = CORBA_string_dup(tag->name);
            mi->userTags._buffer[i].value = CORBA_string_dup(tag->value);
            g_assert(mi->userTags._buffer[i].name);
            g_assert(mi->userTags._buffer[i].value);
        }
    }
}

CamelMessageInfo *
e_mail_messageinfoset_to_info(const Evolution_Mail_MessageInfoSet *mi)
{
    CamelMessageInfo *info;
    int i;

    info = camel_message_info_new(NULL);
    camel_message_info_set_flags(info, mi->flagSet, mi->flagMask);
    for (i=0;i<mi->userFlagSet._length;i++)
        camel_message_info_set_user_flag(info, mi->userFlagSet._buffer[i], TRUE);
    for (i=0;i<mi->userTags._length;i++)
        camel_message_info_set_user_tag(info, mi->userTags._buffer[i].name, mi->userTags._buffer[i].value);

    return info;
}

void
e_mail_folderinfo_set_folder(Evolution_Mail_FolderInfo *fi, EvolutionMailFolder *emf)
{
    fi->name = CORBA_string_dup(emf->name);
    fi->full_name = CORBA_string_dup(emf->full_name);
    fi->folder = CORBA_Object_duplicate(bonobo_object_corba_objref((BonoboObject *)emf), NULL);
}

CamelMimeMessage *
e_messagestream_to_message(const Evolution_Mail_MessageStream in, CORBA_Environment *ev)
{
    CamelStream *emms;
    CamelMimeMessage *msg;

    emms = em_message_stream_new(in);
    if (emms == NULL) {
        e_mail_exception_set(ev, Evolution_Mail_FAILED, _("Unknown reason"));
        return NULL;
    }

    msg = camel_mime_message_new();
    if (camel_data_wrapper_construct_from_stream((CamelDataWrapper *)msg, emms) == -1) {
        e_mail_exception_set(ev, Evolution_Mail_SYSTEM_ERROR, g_strerror(errno));
        camel_object_unref(msg);
        msg = NULL;
    }
    camel_object_unref(emms);

    return msg;
}

Evolution_Mail_MessageStream
e_messagestream_from_message(CamelMimeMessage *msg, CORBA_Environment *ev)
{
    CamelStreamMem *mem;
    EvolutionMailMessageStream *emms;
    Evolution_Mail_MessageStream out;

    /* didn't say it was going to be efficient ... */

    mem = (CamelStreamMem *)camel_stream_mem_new();
    if (camel_data_wrapper_write_to_stream((CamelDataWrapper *)msg, (CamelStream *)mem) == -1) {
        e_mail_exception_set(ev, Evolution_Mail_SYSTEM_ERROR, g_strerror(errno));
        out = CORBA_OBJECT_NIL;
    } else {
        camel_stream_reset((CamelStream *)mem);
        emms = evolution_mail_messagestream_new((CamelStream *)mem);
        out = CORBA_Object_duplicate(bonobo_object_corba_objref((BonoboObject *)emms), NULL);
    }
    camel_object_unref(mem);

    return out;
}

struct _e_mail_listener {
    struct _e_mail_listener *next;
    struct _e_mail_listener *prev;

    CORBA_Object listener;
};

static struct _e_mail_listener *
eml_find(struct _EDList *list, CORBA_Object listener)
{
    struct _e_mail_listener *l, *n;

    l = (struct _e_mail_listener *)list->head;
    n = l->next;
    while (n) {
        if (l->listener == listener)
            return l;
        l = n;
        n = n->next;
    }

    return NULL;
}

static void
eml_remove(struct _e_mail_listener *l)
{
    CORBA_Environment ev = { 0 };

    e_dlist_remove((EDListNode *)l);
    CORBA_Object_release(l->listener, &ev);
    g_free(l);

    if (ev._major != CORBA_NO_EXCEPTION)
        CORBA_exception_free(&ev);
}

void e_mail_listener_add(struct _EDList *list, CORBA_Object listener)
{
    struct _e_mail_listener *l;
    CORBA_Environment ev = { 0 };

    if (eml_find(list, listener) != NULL)
        return;

    listener = CORBA_Object_duplicate(listener, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        CORBA_exception_free(&ev);
    } else {
        l = g_malloc(sizeof(*l));
        l->listener = listener;
        e_dlist_addtail(list, (EDListNode *)l);
    }
}

gboolean e_mail_listener_remove(struct _EDList *list, CORBA_Object listener)
{
    struct _e_mail_listener *l;

    l = eml_find(list, listener);
    if (l)
        eml_remove(l);

    return !e_dlist_empty(list);
}

gboolean e_mail_listener_emit(struct _EDList *list, EMailListenerChanged emit, CORBA_Object source, void *changes)
{
    struct _e_mail_listener *l, *n;
    CORBA_Environment ev = { 0 };

    l = (struct _e_mail_listener *)list->head;
    n = l->next;
    while (n) {
        emit(l->listener, source, changes, &ev);
        if (ev._major != CORBA_NO_EXCEPTION) {
            printf("emit changed failed '%s', removing listener\n", ev._id);
            CORBA_exception_free(&ev);
            eml_remove(l);
        }
        l = n;
        n = n->next;
    }

    return !e_dlist_empty(list);
}

void e_mail_listener_free(struct _EDList *list)
{
    struct _e_mail_listener *l, *n;

    l = (struct _e_mail_listener *)list->head;
    n = l->next;
    while (n) {
        eml_remove(l);

        l = n;
        n = n->next;
    }
}

void e_mail_exception_set(CORBA_Environment *ev, Evolution_Mail_ErrorType id, const char *desc)
{
    Evolution_Mail_MailException *x;

    x = Evolution_Mail_MailException__alloc();
    x->id = id;
    x->desc = CORBA_string_dup(desc);
    CORBA_exception_set(ev, CORBA_USER_EXCEPTION, ex_Evolution_Mail_MailException, x);
}

void e_mail_exception_xfer_camel(CORBA_Environment *ev, CamelException *ex)
{
    e_mail_exception_set(ev, Evolution_Mail_CAMEL_ERROR, ex && ex->desc ? ex->desc:"");
    camel_exception_clear(ex);
}