import { get } from 'svelte/store';
import { slct } from '$lib/stores/ae_stores';
import { events_slct } from '$lib/stores/ae_events_stores';
import type { key_val } from '$lib/stores/ae_stores';
import { api } from '$lib/ae_api/api';

import { db_save_ae_obj_li__ae_obj } from '$lib/ae_core/core__idb_dexie';
import { db_events } from '$lib/ae_events/db_events';
import type { ae_EventPresenter } from '$lib/types/ae_types';

import { load_ae_obj_li__event_file } from '$lib/ae_events/ae_events__event_file';

const ae_promises: key_val = {};

// Updated 2026-01-30: Optimized Non-Blocking SWR Pattern
export async function load_ae_obj_id__event_presenter({
    api_cfg,
    event_presenter_id,
    inc_file_li = false,
    view = 'default',
    try_cache = true,
    log_lvl = 0
}: {
    api_cfg: any;
    event_presenter_id: string;
    inc_file_li?: boolean;
    view?: string;
    try_cache?: boolean;
    log_lvl?: number;
}): Promise<ae_EventPresenter | null> {
    if (log_lvl) {
        console.log(
            `*** load_ae_obj_id__event_presenter() *** [V3] id=${event_presenter_id} (SWR)`
        );
    }

    // 1. FAST PATH: Cache hit
    if (try_cache) {
        try {
            const cached = await db_events.presenter.get(event_presenter_id);
            if (cached) {
                // Background refresh (non-blocking)
                _refresh_presenter_id_background({
                    api_cfg,
                    event_presenter_id,
                    view,
                    try_cache,
                    inc_file_li,
                    log_lvl: 0
                });
                return cached;
            }
        } catch (e) {}
    }

    // 2. SLOW PATH: Wait for API
    return await _refresh_presenter_id_background({
        api_cfg,
        event_presenter_id,
        view,
        try_cache,
        inc_file_li,
        log_lvl
    });
}

async function _refresh_presenter_id_background({
    api_cfg,
    event_presenter_id,
    view,
    try_cache,
    inc_file_li,
    log_lvl
}: any) {
    if (typeof navigator !== 'undefined' && !navigator.onLine) return null;
    try {
        const result = await api.get_ae_obj({
            api_cfg,
            obj_type: 'event_presenter',
            obj_id: event_presenter_id,
            view,
            log_lvl
        });
        if (result) {
            const processed = await process_ae_obj__event_presenter_props({
                obj_li: [result],
                log_lvl
            });
            const processed_obj = processed[0];
            if (try_cache) {
                await db_save_ae_obj_li__ae_obj({
                    db_instance: db_events,
                    table_name: 'presenter',
                    obj_li: [processed_obj],
                    properties_to_save,
                    log_lvl
                });
            }
            if (inc_file_li) {
                processed_obj.event_file_li = await load_ae_obj_li__event_file({
                    api_cfg,
                    for_obj_type: 'event_presenter',
                    for_obj_id: event_presenter_id,
                    enabled: 'all',
                    // WHY: include hidden files so Manage Files UI can show/unhide them.
                    hidden: 'all',
                    limit: 25,
                    try_cache: false,
                    log_lvl
                });
            }
            return processed_obj;
        }
    } catch (e) {}
    return null;
}

// Updated 2026-01-30: Robust Cache Lookups
export async function load_ae_obj_li__event_presenter({
    api_cfg,
    for_obj_type = 'event_presentation',
    for_obj_id,
    inc_file_li = false,
    enabled = 'enabled',
    hidden = 'not_hidden',
    view = 'default',
    limit = 50,
    offset = 0,
    order_by_li = [
        { priority: 'DESC' },
        { sort: 'DESC' },
        { given_name: 'ASC' },
        { family_name: 'ASC' }
    ],
    try_cache = true,
    log_lvl = 0
}: {
    api_cfg: any;
    for_obj_type?: string;
    for_obj_id: string;
    inc_file_li?: boolean;
    enabled?: 'enabled' | 'all' | 'not_enabled';
    hidden?: 'hidden' | 'all' | 'not_hidden';
    view?: string;
    limit?: number;
    offset?: number;
    order_by_li?: any;
    try_cache?: boolean;
    log_lvl?: number;
}): Promise<ae_EventPresenter[]> {
    if (log_lvl) {
        console.log(
            `*** load_ae_obj_li__event_presenter() *** [V3] for=${for_obj_type}:${for_obj_id} (SWR)`
        );
    }

    // 1. FAST PATH: Check cache using specific indices
    if (try_cache) {
        try {
            let cached_li: any[] = [];
            if (for_obj_type === 'event_presentation') {
                cached_li = await db_events.presenter
                    .where('event_presentation_id')
                    .equals(for_obj_id)
                    .toArray();
            } else if (for_obj_type === 'event_session') {
                cached_li = await db_events.presenter
                    .where('event_session_id')
                    .equals(for_obj_id)
                    .toArray();
            } else if (for_obj_type === 'event') {
                cached_li = await db_events.presenter
                    .where('event_id')
                    .equals(for_obj_id)
                    .toArray();
            }

            if (cached_li && cached_li.length > 0) {
                // Background refresh (non-blocking)
                _refresh_presenter_li_background({
                    api_cfg,
                    for_obj_type,
                    for_obj_id,
                    inc_file_li,
                    enabled,
                    hidden,
                    view,
                    limit,
                    offset,
                    order_by_li,
                    try_cache,
                    log_lvl: 0
                });
                return cached_li;
            }
        } catch (e) {}
    }

    // 2. SLOW PATH: Wait for API
    return await _refresh_presenter_li_background({
        api_cfg,
        for_obj_type,
        for_obj_id,
        inc_file_li,
        enabled,
        hidden,
        view,
        limit,
        offset,
        order_by_li,
        try_cache,
        log_lvl
    });
}

async function _refresh_presenter_li_background({
    api_cfg,
    for_obj_type,
    for_obj_id,
    inc_file_li,
    enabled,
    hidden,
    view,
    limit,
    offset,
    order_by_li,
    try_cache,
    log_lvl
}: any) {
    if (typeof navigator !== 'undefined' && !navigator.onLine) return [];
    try {
        const result_li = await api.get_ae_obj_li({
            api_cfg,
            obj_type: 'event_presenter',
            for_obj_type,
            for_obj_id,
            enabled,
            hidden,
            view,
            limit,
            offset,
            order_by_li,
            log_lvl
        });
        if (result_li) {
            const processed = await process_ae_obj__event_presenter_props({
                obj_li: result_li,
                log_lvl
            });

            // String-Only ID Vision: Ensure linking ID is set for indexing
            processed.forEach((p) => {
                if (for_obj_type === 'event_presentation') {
                    p.event_presentation_id = for_obj_id;
                    p.event_presentation_id_random = for_obj_id;
                }
                if (for_obj_type === 'event_session') {
                    p.event_session_id = for_obj_id;
                    p.event_session_id_random = for_obj_id;
                }
                if (for_obj_type === 'event') {
                    p.event_id = for_obj_id;
                    p.event_id_random = for_obj_id;
                }
            });

            if (try_cache) {
                await db_save_ae_obj_li__ae_obj({
                    db_instance: db_events,
                    table_name: 'presenter',
                    obj_li: processed,
                    properties_to_save,
                    log_lvl
                });
                // CRITICAL FIX (2026-02-26): Yield to microtask queue so Dexie liveQuery observers
                // fire before we return. Without this, component-mounted liveQueries may subscribe
                // to IDB *before* the write completes, causing empty results on cold-start.
                await Promise.resolve();
            }

            // Background nested loads for refreshed items (FIRE AND FORGET)
            if (inc_file_li) {
                processed.forEach((p) => {
                    load_ae_obj_li__event_file({
                        api_cfg,
                        for_obj_type: 'event_presenter',
                        for_obj_id: p.id,
                        enabled: 'all',
                        // WHY: include hidden files so Manage Files UI can show/unhide them.
                        hidden: 'all',
                        limit: 25,
                        try_cache: false,
                        log_lvl: 0
                    });
                });
            }

            return processed;
        }
    } catch (e) {}
    return [];
}

// Updated 2026-01-20 to V3
export async function create_ae_obj__event_presenter({
    api_cfg,
    event_presentation_id,
    data_kv,
    try_cache = true,
    log_lvl = 0
}: {
    api_cfg: any;
    event_presentation_id?: string;
    data_kv: key_val;
    try_cache?: boolean;
    log_lvl?: number;
}): Promise<ae_EventPresenter | null> {
    if (!event_presentation_id)
        event_presentation_id = get(events_slct).event_presentation_id;
    if (!event_presentation_id) {
        console.error(
            'create_ae_obj__event_presenter: event_presentation_id is required'
        );
        return null;
    }
    // event_id and event_session_id are required for the v_event_presenter view
    // (which uses INNER JOIN with event on event_id). Without them the API cannot
    // return the full object after creation and the Dexie save fails.
    const ev_slct = get(events_slct);
    const fields_with_ids = {
        event_id: ev_slct.event_id ?? undefined,
        event_session_id: ev_slct.event_session_id ?? undefined,
        ...data_kv
    };
    const result = await api.create_nested_obj({
        api_cfg,
        for_obj_type: 'event_presentation',
        for_obj_id: event_presentation_id,
        obj_type: 'event_presenter',
        fields: fields_with_ids,
        log_lvl
    });

    if (result) {
        const processed = await process_ae_obj__event_presenter_props({
            obj_li: [result],
            log_lvl
        });
        const processed_obj = processed[0];
        if (try_cache) {
            await db_save_ae_obj_li__ae_obj({
                db_instance: db_events,
                table_name: 'presenter',
                obj_li: [processed_obj],
                properties_to_save,
                log_lvl
            });
        }
        return processed_obj;
    }
    return null;
}

// Updated 2026-01-20 to V3
export async function delete_ae_obj_id__event_presenter({
    api_cfg,
    event_presentation_id,
    event_presenter_id,
    method = 'delete',
    try_cache = true,
    log_lvl = 0
}: {
    api_cfg: any;
    event_presentation_id?: string;
    event_presenter_id: string;
    method?: 'delete' | 'soft_delete' | 'disable' | 'hide';
    try_cache?: boolean;
    log_lvl?: number;
}) {
    if (!event_presentation_id)
        event_presentation_id = get(events_slct).event_presentation_id;
    if (!event_presentation_id) {
        console.error(
            'delete_ae_obj_id__event_presenter: event_presentation_id is required'
        );
        return null;
    }
    const result = await api.delete_nested_ae_obj({
        api_cfg,
        for_obj_type: 'event_presentation',
        for_obj_id: event_presentation_id,
        obj_type: 'event_presenter',
        obj_id: event_presenter_id,
        method,
        log_lvl
    });
    if (try_cache) await db_events.presenter.delete(event_presenter_id);
    return result;
}

// Updated 2026-01-20 to V3
export async function update_ae_obj__event_presenter({
    api_cfg,
    event_presentation_id,
    event_presenter_id,
    data_kv,
    try_cache = true,
    log_lvl = 0
}: {
    api_cfg: any;
    event_presentation_id?: string;
    event_presenter_id: string;
    data_kv: key_val;
    try_cache?: boolean;
    log_lvl?: number;
}): Promise<ae_EventPresenter | null> {
    if (!event_presentation_id)
        event_presentation_id = get(events_slct).event_presentation_id;
    if (!event_presentation_id) {
        console.error(
            'update_ae_obj__event_presenter: event_presentation_id is required'
        );
        return null;
    }
    const result = await api.update_nested_obj({
        api_cfg,
        for_obj_type: 'event_presentation',
        for_obj_id: event_presentation_id,
        obj_type: 'event_presenter',
        obj_id: event_presenter_id,
        fields: data_kv,
        log_lvl
    });
    if (result) {
        const processed = await process_ae_obj__event_presenter_props({
            obj_li: [result],
            log_lvl
        });
        const processed_obj = processed[0];
        if (try_cache) {
            await db_save_ae_obj_li__ae_obj({
                db_instance: db_events,
                table_name: 'presenter',
                obj_li: [processed_obj],
                properties_to_save,
                log_lvl
            });
        }
        return processed_obj;
    }
    return null;
}

// Updated 2026-01-21 to Restore Full Aether Search Logic
export async function search__event_presenter({
    api_cfg,
    event_id,
    fulltext_search_qry_str = '',
    ft_presenter_search_qry_str = null,
    like_search_qry_str = '',
    like_presentation_search_qry_str = '',
    like_presenter_search_qry_str = '',
    agree = null,
    biography = null,
    enabled = 'enabled',
    hidden = 'not_hidden',
    view = 'default',
    limit = 25,
    offset = 0,
    order_by_li = [
        { sort: 'ASC' },
        { given_name: 'ASC' },
        { family_name: 'ASC' }
    ],
    try_cache = true,
    log_lvl = 0
}: {
    api_cfg: any;
    event_id: string;
    fulltext_search_qry_str?: string;
    ft_presenter_search_qry_str?: string | null;
    like_search_qry_str?: string;
    like_presentation_search_qry_str?: string;
    like_presenter_search_qry_str?: string;
    agree?: null | boolean;
    biography?: null | boolean;
    enabled?: 'enabled' | 'all' | 'not_enabled';
    hidden?: 'hidden' | 'all' | 'not_hidden';
    view?: string;
    limit?: number;
    offset?: number;
    order_by_li?: any;
    try_cache?: boolean;
    log_lvl?: number;
}): Promise<ae_EventPresenter[]> {
    const search_query: any = {
        q: '',
        and: [{ field: 'event_id', op: 'eq', value: event_id }]
    };
    const params: key_val = {};
    if (fulltext_search_qry_str && fulltext_search_qry_str.length > 2)
        params['ft_qry'] = { default_qry_str: fulltext_search_qry_str };
    if (ft_presenter_search_qry_str && ft_presenter_search_qry_str.length > 2)
        params['ft_qry'] = {
            ...params['ft_qry'],
            event_presenter_li_qry_str: ft_presenter_search_qry_str
        };
    if (like_search_qry_str)
        params['lk_qry'] = { default_qry_str: like_search_qry_str };
    if (like_presentation_search_qry_str)
        params['lk_qry'] = {
            ...params['lk_qry'],
            event_presentation_li_qry_str: like_presentation_search_qry_str
        };
    if (like_presenter_search_qry_str)
        params['lk_qry'] = {
            ...params['lk_qry'],
            event_presenter_li_qry_str: like_presenter_search_qry_str
        };
    if (agree !== null)
        search_query.and.push({
            field: 'agree',
            op: 'eq',
            value: agree ? 1 : 0
        });
    if (biography === true)
        search_query.and.push({ field: 'biography', op: 'ne', value: '' });
    if (enabled === 'enabled')
        search_query.and.push({ field: 'enable', op: 'eq', value: 1 });
    else if (enabled === 'not_enabled')
        search_query.and.push({ field: 'enable', op: 'eq', value: 0 });
    if (hidden === 'hidden')
        search_query.and.push({ field: 'hide', op: 'eq', value: 1 });
    else if (hidden === 'not_hidden')
        search_query.and.push({ field: 'hide', op: 'eq', value: 0 });

    const result_li = await api.search_ae_obj({
        api_cfg,
        obj_type: 'event_presenter',
        search_query,
        order_by_li,
        params,
        view,
        limit,
        offset,
        log_lvl
    });
    if (result_li) {
        const processed = await process_ae_obj__event_presenter_props({
            obj_li: result_li,
            log_lvl
        });
        if (try_cache) {
            await db_save_ae_obj_li__ae_obj({
                db_instance: db_events,
                table_name: 'presenter',
                obj_li: processed,
                properties_to_save,
                log_lvl
            });
        }
        return processed;
    }
    return [];
}

export const qry__event_presenter = search__event_presenter;

export async function email_sign_in__event_presenter({
    api_cfg,
    to_email,
    to_name,
    base_url,
    person_id,
    person_passcode,
    event_id,
    event_session_id,
    event_presentation_id,
    event_presenter_id,
    session_name,
    presentation_name
}: {
    api_cfg: any;
    to_email?: string | null;
    to_name?: string | null;
    base_url?: string | null;
    person_id?: string | null;
    person_passcode?: string | null;
    event_id?: string | null;
    event_session_id?: string | null;
    event_presentation_id?: string | null;
    event_presenter_id?: string | null;
    session_name?: string | null;
    presentation_name?: string | null;
}) {
    if (
        !to_email ||
        !person_passcode ||
        !event_id ||
        !event_presenter_id
    ) {
        console.error(
            'Missing required parameters for email_sign_in__event_presenter'
        );
        return null;
    }
    const subject = `Pres Mgmt Hub Sign In Link for Presenter: ${to_name ?? 'Presenter'}`;
    // Routes to the session page (which has the sign-in handler mounted) not /presenter/[id]
    // which has no sign-in handler. Includes presenter_id + presentation_id so the handler
    // can grant presenter-level auth (not just session read access).
    // person_id is omitted for email-only presenters (no Person record) — the sign-in handler
    // falls back to presenter_id and resolves their identity via Dexie lookup.
    const sign_in_parts: string[] = [];
    if (person_id) sign_in_parts.push(`person_id=${encodeURIComponent(person_id)}`);
    sign_in_parts.push(`person_pass=${encodeURIComponent(person_passcode ?? '')}`);
    sign_in_parts.push(`presenter_id=${encodeURIComponent(event_presenter_id ?? '')}`);
    if (event_presentation_id) sign_in_parts.push(`presentation_id=${encodeURIComponent(event_presentation_id)}`);
    const sign_in_url = `${base_url}/events/${event_id}/session/${event_session_id}?${sign_in_parts.join('&')}`;
    const body_html = `<div>${to_name},<p>Your sign-in link for ${presentation_name ?? 'Presentation'} (Session: ${session_name ?? 'Session'}): <a href="${sign_in_url}">${sign_in_url}</a></p><p>This link takes you to the session page — your presentation and file upload sections will be available after you sign in.</p></div>`;
    return await api.send_email({
        api_cfg,
        from_email: 'noreply+presmgmt@oneskyit.com',
        from_name: 'Aether Pres Mgmt',
        to_email,
        subject,
        body_html
    });
}

export const properties_to_save = [
    'id',
    'event_presenter_id',
    'event_presenter_id_random',
    'external_id',
    'code',
    'event_id',
    'event_session_id',
    'event_presentation_id',
    'event_person_id',
    'person_id',
    'person_profile_id',
    'person_id_random',
    'person_profile_id_random',
    'pronouns',
    'informal_name',
    'title_names',
    'given_name',
    'middle_name',
    'family_name',
    'designations',
    'professional_title',
    'full_name',
    'affiliations',
    'email',
    'biography',
    'agree',
    'comments',
    'passcode',
    'hide_event_launcher',
    'data_json',
    'enable',
    'hide',
    'priority',
    'sort',
    'group',
    'notes',
    'created_on',
    'updated_on',
    'tmp_sort_1',
    'tmp_sort_2',
    'file_count',
    'event_session_code',
    'event_session_name',
    'event_session_start_datetime',
    'event_presentation_code',
    'event_presentation_name',
    'event_presentation_start_datetime',
    'person_external_id',
    'person_external_sys_id',
    'person_given_name',
    'person_family_name',
    'person_full_name',
    'person_professional_title',
    'person_affiliations',
    'person_primary_email',
    'person_passcode'
];

async function _process_generic_props<T extends Record<string, any>>({
    obj_li,
    obj_type,
    log_lvl = 0,
    specific_processor
}: {
    obj_li: T[];
    obj_type: string;
    log_lvl?: number;
    specific_processor?: (obj: T) => Promise<T> | T;
}): Promise<T[]> {
    if (!obj_li || obj_li.length === 0) return [];
    const processed_obj_li: T[] = [];
    for (const original_obj of obj_li) {
        let processed_obj = { ...original_obj };
        for (const key in processed_obj) {
            if (key.endsWith('_random')) {
                const newKey = key.slice(0, -7);
                (processed_obj as any)[newKey] = processed_obj[key];
            }
        }
        const randomIdKey = `${obj_type}_id_random`;
        const baseIdKey = `${obj_type}_id`;
        if (processed_obj[randomIdKey]) {
            (processed_obj as any).id = processed_obj[randomIdKey];
            (processed_obj as any)[baseIdKey] = processed_obj[randomIdKey];
        } else if (processed_obj[baseIdKey])
            (processed_obj as any).id = processed_obj[baseIdKey];
        const group = processed_obj.group ?? '0';
        const priority = processed_obj.priority ? 1 : 0;
        const sort = processed_obj.sort ?? '0';
        const updated =
            processed_obj.updated_on ??
            processed_obj.created_on ??
            new Date(0).toISOString();
        const name = processed_obj.name ?? '';
        (processed_obj as any).tmp_sort_1 =
            `${group}_${priority}_${sort}_${updated}`;
        (processed_obj as any).tmp_sort_2 =
            `${group}_${priority}_${sort}_${name}_${updated}`;
        if (specific_processor)
            processed_obj = await Promise.resolve(
                specific_processor(processed_obj)
            );
        processed_obj_li.push(processed_obj as T);
    }
    return processed_obj_li;
}

export async function process_ae_obj__event_presenter_props({
    obj_li,
    log_lvl = 0
}: {
    obj_li: any[];
    log_lvl?: number;
}) {
    return _process_generic_props({
        obj_li,
        obj_type: 'event_presenter',
        log_lvl,
        specific_processor: (obj) => {
            // String-Only ID Vision: Ensure linking IDs are the string versions for indexing
            if (obj.event_presenter_id_random)
                obj.event_presenter_id = obj.event_presenter_id_random;
            if (obj.event_presentation_id_random)
                obj.event_presentation_id = obj.event_presentation_id_random;
            if (obj.event_session_id_random)
                obj.event_session_id = obj.event_session_id_random;
            if (obj.event_id_random) obj.event_id = obj.event_id_random;
            return obj;
        }
    });
}
