import type {
    MobileDevice,
    MobileDeviceDetail,
    MobileMediaAsset,
    MobileSMS,
} from "@pkg/logic/domains/mobile/data";
import {
    getDeviceDetailSQ,
    getDeviceMediaSQ,
    getDeviceSmsSQ,
    getDevicesSQ,
} from "./mobile.remote";
import { toast } from "svelte-sonner";

class MobileViewModel {
    devices = $state([] as MobileDevice[]);
    devicesLoading = $state(false);
    devicesSearch = $state("");
    devicesPage = $state(1);
    devicesPageSize = $state(25);
    devicesTotal = $state(0);

    selectedDeviceDetail = $state(null as MobileDeviceDetail | null);
    deviceDetailLoading = $state(false);

    sms = $state([] as MobileSMS[]);
    smsLoading = $state(false);
    smsPage = $state(1);
    smsPageSize = $state(25);
    smsTotal = $state(0);

    media = $state([] as MobileMediaAsset[]);
    mediaLoading = $state(false);
    mediaPage = $state(1);
    mediaPageSize = $state(25);
    mediaTotal = $state(0);

    private devicesPollTimer: ReturnType<typeof setInterval> | null = null;
    private smsPollTimer: ReturnType<typeof setInterval> | null = null;
    private devicesRequestVersion = 0;

    async fetchDevices({
        showLoading = true,
        forceRefresh = false,
    }: {
        showLoading?: boolean;
        forceRefresh?: boolean;
    } = {}) {
        const requestVersion = ++this.devicesRequestVersion;
        if (showLoading) {
            this.devicesLoading = true;
        }

        try {
            const result = await getDevicesSQ({
                search: this.devicesSearch || undefined,
                refreshAt: forceRefresh ? Date.now() : undefined,
                pagination: {
                    page: this.devicesPage,
                    pageSize: this.devicesPageSize,
                    sortBy: "lastPingAt",
                    sortOrder: "desc",
                },
            });

            if (requestVersion !== this.devicesRequestVersion) {
                return;
            }

            if (result?.error || !result?.data) {
                toast.error(result?.error?.message || "Failed to load devices", {
                    description: result?.error?.description || "Please try again later",
                });
                return;
            }

            this.devices = [...(result.data.data as MobileDevice[])];
            this.devicesTotal = result.data.total;
        } catch (error) {
            if (requestVersion !== this.devicesRequestVersion) {
                return;
            }

            toast.error("Failed to load devices", {
                description:
                    error instanceof Error ? error.message : "Please try again later",
            });
        } finally {
            if (showLoading && requestVersion === this.devicesRequestVersion) {
                this.devicesLoading = false;
            }
        }
    }

    async refreshDevices() {
        await this.fetchDevices({ showLoading: true, forceRefresh: true });
    }

    async fetchDeviceDetail(deviceId: number) {
        this.deviceDetailLoading = true;
        try {
            const result = await getDeviceDetailSQ({ deviceId });
            if (result?.error || !result?.data) {
                toast.error(result?.error?.message || "Failed to load device details", {
                    description: result?.error?.description || "Please try again later",
                });
                return;
            }
            this.selectedDeviceDetail = result.data as MobileDeviceDetail;
        } catch (error) {
            toast.error("Failed to load device details", {
                description:
                    error instanceof Error ? error.message : "Please try again later",
            });
        } finally {
            this.deviceDetailLoading = false;
        }
    }

    async fetchSMS(deviceId: number) {
        this.smsLoading = true;
        try {
            const result = await getDeviceSmsSQ({
                deviceId,
                pagination: {
                    page: this.smsPage,
                    pageSize: this.smsPageSize,
                    sortBy: "sentAt",
                    sortOrder: "desc",
                },
            });
            if (result?.error || !result?.data) {
                toast.error(result?.error?.message || "Failed to load SMS", {
                    description: result?.error?.description || "Please try again later",
                });
                return;
            }
            this.sms = result.data.data as MobileSMS[];
            this.smsTotal = result.data.total;
        } catch (error) {
            toast.error("Failed to load SMS", {
                description:
                    error instanceof Error ? error.message : "Please try again later",
            });
        } finally {
            this.smsLoading = false;
        }
    }

    async fetchMedia(deviceId: number) {
        this.mediaLoading = true;
        try {
            const result = await getDeviceMediaSQ({
                deviceId,
                pagination: {
                    page: this.mediaPage,
                    pageSize: this.mediaPageSize,
                    sortBy: "createdAt",
                    sortOrder: "desc",
                },
            });
            if (result?.error || !result?.data) {
                toast.error(result?.error?.message || "Failed to load media assets", {
                    description: result?.error?.description || "Please try again later",
                });
                return;
            }
            this.media = result.data.data as MobileMediaAsset[];
            this.mediaTotal = result.data.total;
        } catch (error) {
            toast.error("Failed to load media assets", {
                description:
                    error instanceof Error ? error.message : "Please try again later",
            });
        } finally {
            this.mediaLoading = false;
        }
    }

    startDevicesPolling(intervalMs = 5000) {
        this.stopDevicesPolling();
        this.devicesPollTimer = setInterval(() => {
            void this.fetchDevices({
                showLoading: false,
                forceRefresh: true,
            });
        }, intervalMs);
    }

    stopDevicesPolling() {
        if (this.devicesPollTimer) {
            clearInterval(this.devicesPollTimer);
            this.devicesPollTimer = null;
        }
    }

    startSmsPolling(deviceId: number, intervalMs = 5000) {
        this.stopSmsPolling();
        this.smsPollTimer = setInterval(() => {
            this.fetchSMS(deviceId);
        }, intervalMs);
    }

    stopSmsPolling() {
        if (this.smsPollTimer) {
            clearInterval(this.smsPollTimer);
            this.smsPollTimer = null;
        }
    }

    formatLastPing(lastPingAt: Date | null | undefined) {
        if (!lastPingAt) {
            return "Never";
        }
        const pingDate =
            lastPingAt instanceof Date ? lastPingAt : new Date(lastPingAt);
        const diffSeconds = Math.floor((Date.now() - pingDate.getTime()) / 1000);

        if (diffSeconds < 60) {
            return `${diffSeconds}s ago`;
        }
        if (diffSeconds < 3600) {
            return `${Math.floor(diffSeconds / 60)}m ago`;
        }
        if (diffSeconds < 86400) {
            return `${Math.floor(diffSeconds / 3600)}h ago`;
        }
        return pingDate.toLocaleString();
    }
}

export const mobileVM = new MobileViewModel();