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// Copyright 2025 Shota FUJI
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// SPDX-License-Identifier: Apache-2.0

const std = @import("std");

const rc = @import("../rc.zig");
const json = @import("../json.zig");

const allocator = std.heap.c_allocator;

pub const ControlType = enum(c_int) {
    pub const cname = "roon_transport_ControlType";

    play,
    pause,
    playpause,
    stop,
    previous,
    next,
};

pub const SeekMode = enum(c_int) {
    pub const cname = "roon_transport_SeekMode";

    relative,
    absolute,
};

pub const ChangeVolumeMode = enum(c_int) {
    pub const cname = "roon_transport_ChangeVolumeMode";

    absolute,
    relative,
    relative_step,
};

pub const SubscribeZoneChanges = struct {
    pub const Request = json.Serializable(rc.RefCounted(struct {
        pub const cname = "roon_transport_SubscribeZoneChanges_Request";

        subscription_key: []const u8,

        pub fn init(subscription_id: []const u8) @This() {
            return .{ .subscription_key = subscription_id };
        }

        pub fn deinit(self: *const @This()) void {
            allocator.free(self.subscription_key);
        }
    }), .{});

    export fn roon_transport_SubscribeZoneChanges_Request_new(
        subscription_id: [*:0]const u8,
    ) callconv(.C) ?*Request {
        const copy = allocator.dupe(u8, std.mem.span(subscription_id)) catch {
            std.log.err("Unable to copy subscription_id: out of memory", .{});
            return null;
        };

        return Request.new(.init(copy)) catch {
            std.log.err("Unable to create SubscribeZoneChange request: out of memory", .{});
            allocator.free(copy);
            return null;
        };
    }
};

pub const Control = struct {
    pub const Request = json.Serializable(rc.RefCounted(struct {
        pub const cname = "roon_transport_Control_Request";

        zone_or_output_id: []const u8,
        control: ControlType,

        pub fn init(zone_or_output_id: []const u8, control: ControlType) @This() {
            return .{
                .zone_or_output_id = zone_or_output_id,
                .control = control,
            };
        }

        pub fn deinit(self: *const @This()) void {
            allocator.free(self.zone_or_output_id);
        }
    }), .{});

    export fn roon_transport_Control_Request_new(
        zone_or_output_id: [*:0]const u8,
        control: ControlType,
    ) callconv(.C) ?*Request {
        const copy = allocator.dupe(u8, std.mem.span(zone_or_output_id)) catch {
            std.log.err("Unable to copy zone_or_output_id: out of memory", .{});
            return null;
        };

        return Request.new(.init(copy, control)) catch {
            std.log.err("Unable to create Control request: out of memory", .{});
            allocator.free(copy);
            return null;
        };
    }
};

pub const Seek = struct {
    pub const Request = json.Serializable(rc.RefCounted(struct {
        pub const cname = "roon_transport_Seek_Request";

        zone_or_output_id: []const u8,
        how: SeekMode = .relative,
        seconds: i64 = 0,

        pub fn init(zone_or_output_id: []const u8) @This() {
            return .{ .zone_or_output_id = zone_or_output_id };
        }

        pub fn deinit(self: *const @This()) void {
            allocator.free(self.zone_or_output_id);
        }
    }), .{});

    export fn roon_transport_Seek_Request_new(zone_or_output_id: [*:0]const u8) callconv(.C) ?*Request {
        const copy = allocator.dupe(u8, std.mem.span(zone_or_output_id)) catch {
            std.log.err("Unable to copy zone_or_output_id: out of memory", .{});
            return null;
        };

        return Request.new(.init(copy)) catch {
            std.log.err("Unable to create Seek request: out of memory", .{});
            allocator.free(copy);
            return null;
        };
    }
};

pub const ChangeVolume = struct {
    pub const Request = json.Serializable(rc.RefCounted(struct {
        pub const cname = "roon_transport_ChangeVolume_Request";

        output_id: []const u8,
        how: ChangeVolumeMode = .relative,
        value: f64 = 0,

        pub fn init(output_id: []const u8) @This() {
            return .{ .output_id = output_id };
        }

        pub fn deinit(self: *const @This()) void {
            allocator.free(self.output_id);
        }
    }), .{});

    export fn roon_transport_ChangeVolume_Request_new(output_id: [*:0]const u8) callconv(.C) ?*Request {
        const copy = allocator.dupe(u8, std.mem.span(output_id)) catch {
            std.log.err("Unable to copy output_id: out of memory", .{});
            return null;
        };

        return Request.new(.init(copy)) catch {
            std.log.err("Unable to create ChangeVolume request: out of memory", .{});
            allocator.free(copy);
            return null;
        };
    }
};