/*
 * This file is part of matrix-glib-sdk
 *
 * matrix-glib-sdk is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation, either
 * version 3 of the License, or (at your option) any later version.
 *
 * matrix-glib-sdk is distributed in the hope that it will be
 * useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with matrix-glib-sdk. If not, see
 * <http://www.gnu.org/licenses/>.
 */

#include "matrix-types.h"
#include "matrix-enumtypes.h"
#include "matrix-glib.h"

/**
 * SECTION:matrix-types
 * @title: Generic types
 * @short_description: Generic types for Matrix GLib SDK calls
 *
 * These are the generic types used by many SDK calls for
 * communication with the homeserver.
 */

/**
 * MatrixError:
 * @MATRIX_ERROR_NONE: no error
 * @MATRIX_ERROR_COMMUNICATION_ERROR: there was a problem in
 *                                    communication (e.g. connection
 *                                    error)
 * @MATRIX_ERROR_INCOMPLETE: the passed/generated data is incomplete
 * @MATRIX_ERROR_BAD_REQUEST: the request is invalid
 * @MATRIX_ERROR_BAD_RESPONSE: malformed response, or the response is
 *                             not a JSON object
 * @MATRIX_ERROR_INVALID_ROOM_ID: the provided string doesn’t contain
 *                                a valid room ID
 * @MATRIX_ERROR_INVALID_TYPE: the provided type is invalid
 * @MATRIX_ERROR_UNSUPPORTED: the operation is unsupported
 * @MATRIX_ERROR_INVALID_FORMAT: the format of the JSON node is
 *                               invalid (e.g. it is an array instead
 *                               of an object)
 * @MATRIX_ERROR_UNKNOWN_VALUE: the response from the Matrix.org
 *                              server contains a value unknown to
 *                              this library. These should be reported
 *                              to the Matrix GLib SDK developers
 * @MATRIX_ERROR_M_MISSING_TOKEN: authorization token is missing from
 *                                the request
 * @MATRIX_ERROR_M_FORBIDDEN: access was forbidden (e.g. due to a
 *                            missing/invalid token, or using a bad
 *                            password during login)
 * @MATRIX_ERROR_M_UNKNOWN: an error unknown to the Matrix homeserver
 * @MATRIX_ERROR_M_UNKNOWN_TOKEN: the token provided is not known for
 *                                the homeserver
 * @MATRIX_ERROR_M_NOT_JSON: illegal request, the content is not valid
 *                           JSON
 * @MATRIX_ERROR_M_UNRECOGNIZED: the homeserver didn't understand the
 *                               request
 * @MATRIX_ERROR_M_UNAUTHORIZED: the request is unauthorized
 * @MATRIX_ERROR_M_BAD_JSON: the JSON data is not in the required
 *                           format
 * @MATRIX_ERROR_M_USER_IN_USE: the specified username is in use
 * @MATRIX_ERROR_M_ROOM_IN_USE: the specified room is in use
 * @MATRIX_ERROR_M_BAD_PAGINATION: invalid pagination parameters
 * @MATRIX_ERROR_M_BAD_STATE: invalid state event
 * @MATRIX_ERROR_M_NOT_FOUND: the requested resource is not found
 * @MATRIX_ERROR_M_GUEST_ACCESS_FORBIDDEN: guest access was requested,
 *                                         but it is forbidden
 * @MATRIX_ERROR_M_LIMIT_EXCEEDED: the request was rate limited
 * @MATRIX_ERROR_M_CAPTCHA_NEEDED: a captcha is needed to continue
 * @MATRIX_ERROR_M_CAPTCHA_INVALID: the provided captcha is invalid
 * @MATRIX_ERROR_M_MISSING_PARAM: a parameter is missing from the
 *                                request
 * @MATRIX_ERROR_M_TOO_LARGE: the request data is too large
 * @MATRIX_ERROR_M_EXCLUSIVE: the desired user ID is in an exclusive
 *                            namespace claimed by an application
 *                            server
 * @MATRIX_ERROR_M_THREEPID_AUTH_FAILED: 3rd party authentication
 *                                       failed
 * @MATRIX_ERROR_M_THREEPID_IN_USE: the provided 3rd party ID is
 *                                  already in use
 * @MATRIX_ERROR_M_INVALID_USERNAME: the given username is invalid
 * @MATRIX_ERROR_UNSPECIFIED: no error code was sent by the
 *                            homeserver. If you see this error, that
 *                            usually indicates a homeserver bug
 * @MATRIX_ERROR_UNKNOWN_ERROR: an error unknown to this library
 *
 * Value mappings from Matrix.org API error codes
 * (e.g. <code>M_MISSING_TOKEN</code>). They should be set
 * automatically by API calls, if the response contains an error code.
 */

/**
 * MATRIX_ERROR:
 *
 * Error domain for Matrix GLib SDK. See #GError for more information
 * on error domains.
 */

/**
 * matrix_error_quark:
 *
 * Gets the Matrix error #GQuark
 */
G_DEFINE_QUARK(matrix-error-quark, matrix_error);

/**
 * MatrixRoomPreset:
 * @MATRIX_ROOM_PRESET_NONE: no preset
 * @MATRIX_ROOM_PRESET_PRIVATE: preset for private rooms
 * @MATRIX_ROOM_PRESET_TRUSTED_PRIVATE: same as private rooms, but all
 *                                      users get the same power level
 *                                      as the room creator
 * @MATRIX_ROOM_PRESET_PUBLIC: preset for public rooms
 *
 * Preset values for matrix_api_create_room() calls.
 */

/**
 * MatrixRoomVisibility:
 * @MATRIX_ROOM_VISIBILITY_DEFAULT: use a server-assigned value
 *                                  (usually <code>private</code>
 * @MATRIX_ROOM_VISIBILITY_PUBLIC: make the room visible in the public
 *                                 room list
 * @MATRIX_ROOM_VISIBILITY_PRIVATE: hide the room from the public room
 *                                  list
 *
 * Visibility values for room creation. Not to be confused with join
 * rules.
 */

/**
 * MatrixPusherKind:
 * @MATRIX_PUSHER_KIND_OVERRIDE: highest priority rules
 * @MATRIX_PUSHER_KIND_SENDER: for (unencrypted) messages that match
 *                             certain patterns
 * @MATRIX_PUSHER_KIND_ROOM: for all messages for a given room. The
 *                           rule ID of a room rule is always the ID
 *                           of the room that it affects
 * @MATRIX_PUSHER_KIND_CONTENT: for messages from a specific Matrix
 *                              user ID. The rule ID of such rules is
 *                              always the Matrix ID of the user whose
 *                              messages they'd apply to
 * @MATRIX_PUSHER_KIND_UNDERRIDE: lowest priority rules
 *
 * Pusher types.
 */

/**
 * MatrixReceiptType:
 * @MATRIX_RECEIPT_TYPE_READ: indicate that the message has been read
 *
 * Receipt types of acknowledgment.
 */

/**
 * MatrixStateEvent:
 *
 * An opaque structure to hold a state event filter.
 */
struct _MatrixStateEvent {
    gchar *type;
    gchar *state_key;
    JsonNode *content;
    guint refcount;
};

G_DEFINE_BOXED_TYPE(MatrixStateEvent, matrix_state_event,
                    (GBoxedCopyFunc)matrix_state_event_ref,
                    (GBoxedFreeFunc)matrix_state_event_unref);

/**
 * matrix_state_event_new:
 *
 * Create a new #MatrixStateEvent object with reference count of 1.
 *
 * Returns: (transfer full): a new #MatrixStateEvent
 */
MatrixStateEvent *
matrix_state_event_new(void)
{
    MatrixStateEvent *event;

    event = g_new0(MatrixStateEvent, 1);
    event->refcount = 1;

    return event;
}

static void
matrix_state_event_free(MatrixStateEvent *event)
{
    g_free(event->type);
    g_free(event->state_key);

    if (event->content) {
        json_node_free(event->content);
    }

    g_free(event);
}

/**
 * matrix_state_event_ref:
 * @event: a #MatrixStateEvent
 *
 * Increase reference count of @event by one.
 *
 * Returns: (transfer none): the same #MatrixStateEvent
 */
MatrixStateEvent *
matrix_state_event_ref(MatrixStateEvent *event)
{
    event->refcount++;

    return event;
}

/**
 * matrix_state_event_unref:
 * @event: a #MatrixStateEvent
 *
 * Decrease reference count of @event by one. If reference count
 * reaches zero, @event is freed.
 */
void
matrix_state_event_unref(MatrixStateEvent *event)
{
    if (--event->refcount == 0) {
        matrix_state_event_free(event);
    }
}

/**
 * matrix_state_event_set_event_type:
 * @event: a #MatrixStateEvent
 * @event_type: the type of the state event
 *
 * Set the type of the state event in @event.
 */
void
matrix_state_event_set_event_type(MatrixStateEvent *event,
                                  const gchar *event_type)
{
    g_free(event->type);
    event->type = g_strdup(event_type);
}

/**
 * matrix_state_event_get_event_type:
 * @event: a #MatrixStateEvent
 *
 * Get the type of the state event in @event.
 *
 * Returns: (transfer none): the event type. The returned value is
 *          owned by @event and should not be freed nor modified.
 */
const gchar *
matrix_state_event_get_event_type(MatrixStateEvent *event)
{
    return event->type;
}

/**
 * matrix_state_event_set_state_key:
 * @event: a #MatrixStateEvent
 * @state_key: the key of the state event
 *
 * Set the state key for the state event @event.
 */
void
matrix_state_event_set_state_key(MatrixStateEvent *event,
                                 const gchar *state_key)
{
    g_free(event->state_key);
    event->state_key = g_strdup(state_key);
}

/**
 * matrix_state_event_get_state_key:
 * @event: a #MatrixStateEvent
 *
 * Get the state key of @event.
 *
 * Returns: (transfer none): the state key. The returned value is
 *          owned by @event and should not be freed nor modified
 */
const gchar *
matrix_state_event_get_state_key(MatrixStateEvent *event)
{
    return event->state_key;
}

/**
 * matrix_state_event_set_content:
 * @event: a #MatrixStateEvent
 * @content: the desired content of the state event
 *
 * Set the content of the state event.
 */
void
matrix_state_event_set_content(MatrixStateEvent *event, const JsonNode *content)
{
    if (event->content) {
        json_node_free(event->content);
    }

    event->content = json_node_copy((JsonNode *)content);
}

/**
 * matrix_state_event_get_content:
 * @event: a #MatrixStateEvent
 *
 * Get the contents of the state event.
 *
 * Returns: (transfer none): the contents of the state event. The
 *          returned value is owned by @event and should not be freed
 *          nor modified
 */
const JsonNode *
matrix_state_event_get_content(MatrixStateEvent *event)
{
    return event->content;
}

/**
 * matrix_state_event_get_json_node:
 * @event: a #MatrixStateEvent
 *
 * Get the JSON representation of the state event as a #JsonNode
 * object.
 *
 * Returns: (transfer full): the JSON representation of the state
 *          event
 */
JsonNode *
matrix_state_event_get_json_node(MatrixStateEvent *event)
{
    JsonBuilder *builder;
    JsonNode *node;

    builder = json_builder_new();
    json_builder_begin_object(builder);

    json_builder_set_member_name(builder, "state_key");
    json_builder_add_string_value(builder, event->state_key);

    json_builder_set_member_name(builder, "type");
    json_builder_add_string_value(builder, event->type);

    json_builder_set_member_name(builder, "content");
    json_builder_add_value(builder, event->content);

    json_builder_end_object(builder);

    node = json_builder_get_root(builder);
    g_object_unref(builder);

    return node;
}

/**
 * matrix_state_event_get_json_data:
 * @event: a #MatrixStateEvent
 * @datalen: (out): storage for the the length of the JSON data or
 *           %NULL
 *
 * Get the JSON representation of the state event as a string.
 *
 * Returns: (transfer full): the JSON representation of the state
 *          event
 */
gchar *
matrix_state_event_get_json_data(MatrixStateEvent *event, gsize *datalen)
{
    JsonGenerator *generator;
    JsonNode *node = matrix_state_event_get_json_node(event);
    gchar *data;

    generator = json_generator_new();
    json_generator_set_root(generator, node);
    json_node_free(node);

    data = json_generator_to_data(generator, datalen);
    g_object_unref(generator);

    return data;
}