import { FeatureFlagValue, JsonType, PostHogCoreOptions } from '@posthog/core'
import { KnownUnsafeEditableEvent } from '@posthog/core'
import { Leanbase } from './leanbase'

export const COPY_AUTOCAPTURE_EVENT = '$copy_autocapture'

export type Property = any
export type Properties = Record<string, Property>

export type AutocaptureCompatibleElement = 'a' | 'button' | 'form' | 'input' | 'select' | 'textarea' | 'label'

export type DomAutocaptureEvents = 'click' | 'change' | 'submit'

export interface BootstrapConfig {
    distinctId?: string
    isIdentifiedId?: boolean
    featureFlags?: Record<string, FeatureFlagValue>
    featureFlagPayloads?: Record<string, JsonType>

    /**
     * Optionally provide a sessionID, this is so that you can provide an existing sessionID here to continue a user's session across a domain or device. It MUST be:
     * - unique to this user
     * - a valid UUID v7
     * - the timestamp part must be <= the timestamp of the first event in the session
     * - the timestamp of the last event in the session must be < the timestamp part + 24 hours
     * **/
    sessionID?: string
}

/**
 * If an array is passed for an allowlist, autocapture events will only be sent for elements matching
 * at least one of the elements in the array. Multiple allowlists can be used
 */
export interface AutocaptureConfig {
    /**
     * List of URLs to allow autocapture on, can be strings to match
     * or regexes e.g. ['https://example.com', 'test.com/.*']
     * this is useful when you want to autocapture on specific pages only
     *
     * if you set both url_allowlist and url_ignorelist,
     * we check the allowlist first and then the ignorelist.
     * the ignorelist can override the allowlist
     */
    url_allowlist?: (string | RegExp)[]

    /**
     * List of URLs to not allow autocapture on, can be strings to match
     * or regexes e.g. ['https://example.com', 'test.com/.*']
     * this is useful when you want to autocapture on most pages but not some specific ones
     *
     * if you set both url_allowlist and url_ignorelist,
     * we check the allowlist first and then the ignorelist.
     * the ignorelist can override the allowlist
     */
    url_ignorelist?: (string | RegExp)[]

    /**
     * List of DOM events to allow autocapture on  e.g. ['click', 'change', 'submit']
     */
    dom_event_allowlist?: DomAutocaptureEvents[]

    /**
     * List of DOM elements to allow autocapture on
     * e.g. ['a', 'button', 'form', 'input', 'select', 'textarea', 'label']
     *
     * We consider the tree of elements from the root to the target element of the click event
     * so for the tree `div > div > button > svg`
     * if the allowlist has `button` then we allow the capture when the `button` or the `svg` is the click target
     * but not if either of the `div`s are detected as the click target
     */
    element_allowlist?: AutocaptureCompatibleElement[]

    /**
     * List of CSS selectors to allow autocapture on
     * e.g. ['[ph-capture]']
     * we consider the tree of elements from the root to the target element of the click event
     * so for the tree div > div > button > svg
     * and allow list config `['[id]']`
     * we will capture the click if the click-target or its parents has any id
     *
     * Everything is allowed when there's no allowlist
     */
    css_selector_allowlist?: string[]

    /**
     * Exclude certain element attributes from autocapture
     * E.g. ['aria-label'] or [data-attr-pii]
     */
    element_attribute_ignorelist?: string[]

    /**
     * When set to true, autocapture will capture the text of any element that is cut or copied.
     */
    capture_copied_text?: boolean
}

export interface LeanbaseConfig extends Partial<PostHogCoreOptions> {
    /**
     * API host for Leanbase
     * @default 'https://i.leanbase.co'
     */
    host?: string

    /**
     * The token for your Leanbase project.
     * It should NOT be provided manually in the config, but rather passed as the first parameter to `leanbase.init()`.
     */
    token: string

    /**
     * Enables debug mode, which provides more verbose logging for development purposes.
     * @default false
     */
    debug?: boolean

    /**
     * Determines whether Leanbase should autocapture events.
     * This setting does not affect capturing pageview events (see `capture_pageview`).
     *
     * by default autocapture is ignored on elements that match a `ph-no-capture` css class on the element or a parent
     * @default true
     */
    autocapture: boolean | AutocaptureConfig

    /**
     * Determines whether Leanbase should capture pageview events automatically.
     * Can be:
     * - `true`: Capture regular pageviews (default)
     * - `false`: Don't capture any pageviews
     * - `'history_change'`: Only capture pageviews on history API changes (pushState, replaceState, popstate)
     *
     * @default true
     */
    capture_pageview: boolean | 'history_change'

    /**
     * Determines the session idle timeout in seconds.
     * Any new event that's happened after this timeout will create a new session.
     *
     * @default 30 * 60 -- 30 minutes
     */
    session_idle_timeout_seconds: number

    /**
     * An object containing the `distinctID`, `isIdentifiedID`, and `featureFlags` keys,
     * where `distinctID` is a string, and `featureFlags` is an object of key-value pairs.
     *
     * Since there is a delay between initializing PostHog and fetching feature flags,
     * feature flags are not always available immediately.
     * This makes them unusable if you want to do something like redirecting a user
     * to a different page based on a feature flag.
     *
     * You can, therefore, fetch the feature flags in your server and pre-fill them here,
     * allowing PostHog to know the feature flag values immediately.
     *
     * After the SDK fetches feature flags from PostHog, it will use those flag values instead of bootstrapped ones.
     *
     * @default {}
     */
    bootstrap: BootstrapConfig

    /**
     * Determines whether Leanbase should capture pageleave events.
     * If set to `true`, it will capture pageleave events for all pages.
     * If set to `'if_capture_pageview'`, it will only capture pageleave events if `capture_pageview` is also set to `true` or `'history_change'`.
     *
     * @default 'if_capture_pageview'
     */
    capture_pageleave: boolean | 'if_capture_pageview'

    /**
     * Determines whether Leanbase should capture rage clicks.
     *
     * by default rageclicks are ignored on elements that match a `ph-no-capture` or `ph-no-rageclick` css class on the element or a parent
     * @default true
     */
    rageclick: boolean | RageclickConfig

    /**
     * Determines where to store the Leanbase persistence information.
     */
    persistence: 'localStorage' | 'cookie' | 'memory' | 'localStorage+cookie' | 'sessionStorage'

    /**
     * The name for the super properties persistent store
     *
     * @default ''
     */
    persistence_name: string

    /**
     * Prevent autocapture from capturing any attribute names on elements.
     *
     * @default false
     */
    mask_all_element_attributes: boolean

    /**
     * Prevent autocapture from capturing `textContent` on elements.
     *
     * @default false
     */
    mask_all_text: boolean

    /**
     * Used to extend the list of campaign parameters that are saved by default.
     *
     * @see {CAMPAIGN_PARAMS} from './utils/event-utils' - Default campaign parameters like utm_source, utm_medium, etc.
     * @default []
     */
    custom_campaign_params: string[]

    /**
     * Mask personal data properties from the current URL.
     * This will mask personal data properties such as advertising IDs (gclid, fbclid, etc.), and you can also add
     * custom properties to mask with `custom_personal_data_properties`.
     * @default false
     * @see {PERSONAL_DATA_CAMPAIGN_PARAMS} - Default campaign parameters that are masked by default.
     * @see {LeanbaseConfig.custom_personal_data_properties} - Custom list of personal data properties to mask.
     */
    mask_personal_data_properties: boolean

    /**
     * Custom list of personal data properties to mask.
     *
     * E.g. if you added `email` to this list, then any `email` property in the URL will be masked.
     * https://www.example.com/login?email=john.doe%40example.com => https://www.example.com/login?email=<MASKED>
     *
     * @default []
     * @see {LeanbaseConfig.mask_personal_data_properties} - Must be enabled for this to take effect.
     */
    custom_personal_data_properties: string[]

    /**
     * Determines the number of days to store cookies for.
     *
     * @default 365
     */
    cookie_expiration: number

    /**
     * Determines whether Leanbase should use secure cookies.
     * If this is `true`, Leanbase cookies will be marked as secure,
     * meaning they will only be transmitted over HTTPS.
     *
     * @default window.location.protocol === 'https:'
     */
    secure_cookie: boolean

    /**
     * Determines if cookie should be set on the top level domain (example.com).
     * If leanbase-js is loaded on a subdomain (test.example.com), and `cross_subdomain_cookie` is set to false,
     * it'll set the cookie on the subdomain only (test.example.com).
     *
     * NOTE: It will be set to `false` if we detect that the domain is a subdomain of a platform that is excluded from cross-subdomain cookie setting.
     * The current list of excluded platforms is `herokuapp.com`, `vercel.app`, and `netlify.app`.
     *
     * @see `isCrossDomainCookie`
     * @default true
     */
    cross_subdomain_cookie: boolean

    /**
     * Determines whether Leanbase should disable persistence.
     * If set to `true`, the library will not save any data to the browser. It will also delete any data previously saved to the browser.
     *
     * @default false
     */
    disable_persistence: boolean

    /**
     * Enables cookieless mode. In this mode, Leanbase will not set any cookies, or use session or local storage. User
     * identity is handled by generating a privacy-preserving hash on Leanbase's servers.
     * - 'always' - enable cookieless mode immediately on startup, use this if you do not intend to show a cookie banner
     * - 'on_reject' - enable cookieless mode only if the user rejects cookies, use this if you want to show a cookie banner. If the user accepts cookies, cookieless mode will not be used, and PostHog will use cookies and local storage as usual.
     *
     * Note that you MUST enable cookieless mode in your Leanbase project's settings, otherwise all your cookieless events will be ignored. We plan to remove this requirement in the future.
     * */
    cookieless_mode?: 'always' | 'on_reject'

    /**
     * Determines whether PostHog should save referrer information.
     *
     * @default true
     */
    save_referrer: boolean

    /**
     * Determines whether PostHog should save marketing parameters.
     * These are `utm_*` paramaters and friends.
     *
     * @see {CAMPAIGN_PARAMS} from './utils/event-utils' - Default campaign parameters like utm_source, utm_medium, etc.
     * @default true
     */
    save_campaign_params: boolean

    /**
     * Determines whether to disable scroll properties.
     * These allow you to keep track of how far down someone scrolled in your website.
     *
     * @default false
     */
    disable_scroll_properties?: boolean

    /**
     * Let the pageview scroll stats use a custom css selector for the root element, e.g. `main`
     * It will use `window.document.documentElement` if not specified.
     */
    scroll_root_selector?: string | string[]

    /**
     * Determines if users should be opted out of user agent filtering such as googlebot or other bots.
     * If this is set to `true`, PostHog will set `$browser_type` to either `bot` or `browser` for all events,
     * but will process all events as if they were from a browser.
     *
     * @default false
     */
    opt_out_useragent_filter: boolean

    /**
     * Determines the maximum length of the properties string that can be sent with capture calls.
     *
     * @default 65535
     */
    properties_string_max_length: number

    /**
     * A function to be called once the Leanbase scripts have loaded successfully.
     *
     * @param instance - The Leanbase instance that has been loaded.
     */
    loaded: (instance: Leanbase) => void
}

export interface RageclickConfig {
    /**
     * List of CSS selectors to ignore rageclicks on
     * e.g. ['.my-calendar-button']
     * we consider the tree of elements from the root to the target element of the click event
     * so for the tree div > div > button > svg
     * and ignore list config `['[id]']`
     * we will ignore the rageclick if the click-target or its parents has any id
     *
     * Nothing is ignored when there's an empty ignorelist, e.g. []
     * If no ignorelist is set, we default to ignoring .ph-no-rageclick
     * If an element has .ph-no-capture, it will always be ignored by rageclick and autocapture
     */
    css_selector_ignorelist?: string[]
}

export type PropertyMatchType = 'regex' | 'not_regex' | 'exact' | 'is_not' | 'icontains' | 'not_icontains'

export interface ErrorTrackingSuppressionRule {
    type: 'AND' | 'OR'
    values: ErrorTrackingSuppressionRuleValue[]
}

export interface ErrorTrackingSuppressionRuleValue {
    key: '$exception_types' | '$exception_values'
    operator: PropertyMatchType
    value: string | string[]
    type: string
}

export enum Compression {
    GZipJS = 'gzip-js',
    Base64 = 'base64',
}

export type SupportedWebVitalsMetrics = 'LCP' | 'CLS' | 'FCP' | 'INP'

export interface PerformanceCaptureConfig {
    /**
     *  Works with session replay to use the browser's native performance observer to capture performance metrics
     */
    network_timing?: boolean

    /**
     * Use chrome's web vitals library to wrap fetch and capture web vitals
     */
    web_vitals?: boolean

    /**
     * We observe very large values reported by the Chrome web vitals library
     * These outliers are likely not real, useful values, and we exclude them
     * You can set this to 0 in order to include all values, NB this is not recommended
     *
     * @default 15 * 60 * 1000 (15 minutes)
     */
    __web_vitals_max_value?: number

    /**
     * By default all 4 metrics are captured
     * You can set this config to restrict which metrics are captured
     * e.g. ['CLS', 'FCP'] to only capture those two metrics
     * NB setting this does not override whether the capture is enabled
     *
     * @default ['LCP', 'CLS', 'FCP', 'INP']
     */
    web_vitals_allowed_metrics?: SupportedWebVitalsMetrics[]

    /**
     * We delay flushing web vitals metrics to reduce the number of events we send
     * This is the maximum time we will wait before sending the metrics
     *
     * @default 5000
     */
    web_vitals_delayed_flush_ms?: number
}

/**
 * Remote configuration for the Leanbase instance
 *
 * All of these settings can be configured directly in your Leanbase instance
 * Any configuration set in the client overrides the information from the server
 */
export interface RemoteConfig {
    /**
     * Supported compression algorithms
     */
    supportedCompression: Compression[]

    /**
     * If set, disables autocapture
     */
    autocapture_opt_out?: boolean

    /**
     *     originally capturePerformance was replay only and so boolean true
     *     is equivalent to { network_timing: true }
     *     now capture performance can be separately enabled within replay
     *     and as a standalone web vitals tracker
     *     people can have them enabled separately
     *     they work standalone but enhance each other
     *     TODO: deprecate this so we make a new config that doesn't need this explanation
     */
    capturePerformance?: boolean | PerformanceCaptureConfig

    /**
     * Whether we should use a custom endpoint for analytics
     *
     * @default { endpoint: "/e" }
     */
    analytics?: {
        endpoint?: string
    }

    /**
     * Whether the `$elements_chain` property should be sent as a string or as an array
     *
     * @default false
     */
    elementsChainAsString?: boolean

    /**
     * Error tracking configuration options
     */
    errorTracking?: {
        autocaptureExceptions?: boolean
        captureExtensionExceptions?: boolean
        suppressionRules?: ErrorTrackingSuppressionRule[]
    }

    /**
     * This is currently in development and may have breaking changes without a major version bump
     */
    autocaptureExceptions?: boolean | { endpoint?: string }

    /**
     * @deprecated, moved to toolbarParams
     */
    toolbarVersion: 'toolbar'

    /**
     * Whether the user is authenticated
     */
    isAuthenticated: boolean

    /**
     * List of site apps with their IDs and URLs
     */
    siteApps: { id: string; url: string }[]

    /**
     * Whether heatmaps are enabled
     */
    heatmaps?: boolean

    /**
     * Whether to only capture identified users by default
     */
    defaultIdentifiedOnly?: boolean

    /**
     * Whether to capture dead clicks
     */
    captureDeadClicks?: boolean

    /**
     * Indicates if the team has any flags enabled (if not we don't need to load them)
     */
    hasFeatureFlags?: boolean
}

/**
 * These are known events Leanbase events that can be processed by the `beforeCapture` function
 * That means Leanbase functionality does not rely on receiving 100% of these for calculations
 * So, it is safe to sample them to reduce the volume of events sent to Leanbase
 */
export type KnownEventName =
    | '$heatmaps_data'
    | '$opt_in'
    | '$exception'
    | '$$heatmap'
    | '$web_vitals'
    | '$dead_click'
    | '$autocapture'
    | typeof COPY_AUTOCAPTURE_EVENT
    | '$rageclick'

export type EventName = KnownUnsafeEditableEvent | KnownEventName | (string & {})

export interface PersistentStore {
    _is_supported: () => boolean
    _error: (error: any) => void
    _parse: (name: string) => any
    _get: (name: string) => any
    _set: (
        name: string,
        value: any,
        expire_days?: number | null,
        cross_subdomain?: boolean,
        secure?: boolean,
        debug?: boolean
    ) => void
    _remove: (name: string, cross_subdomain?: boolean) => void
}

export interface RequestResponse {
    statusCode: number
    text?: string
    json?: any
}

export type RequestCallback = (response: RequestResponse) => void

// See https://nextjs.org/docs/app/api-reference/functions/fetch#fetchurl-options
type NextOptions = { revalidate: false | 0 | number; tags: string[] }

export interface RequestWithOptions {
    url: string
    data?: Record<string, any> | Record<string, any>[]
    headers?: Record<string, any>
    transport?: 'XHR' | 'fetch' | 'sendBeacon'
    method?: 'POST' | 'GET'
    urlQueryArgs?: { compression: Compression }
    callback?: RequestCallback
    timeout?: number
    noRetries?: boolean
    disableTransport?: ('XHR' | 'fetch' | 'sendBeacon')[]
    disableXHRCredentials?: boolean
    compression?: Compression | 'best-available'
    fetchOptions?: {
        cache?: RequestInit['cache']
        next?: NextOptions
    }
}

export type SessionIdChangedCallback = (
    sessionId: string,
    windowId: string | null | undefined,
    changeReason?: { noSessionId: boolean; activityTimeout: boolean; sessionPastMaximumLength: boolean }
) => void

export type LeanbasegCaptureOptions = {
    /** If provided overrides the auto-generated event ID */
    uuid?: string
    disableGeoip?: boolean
    /**
     * Used when `$identify` is called
     * Will set person properties overriding previous values
     */
    $set?: Properties

    /**
     * Used when `$identify` is called
     * Will set person properties but only once, it will NOT override previous values
     */
    $set_once?: Properties

    /**
     * Used to override the desired endpoint for the captured event
     */
    _url?: string

    /**
     * key of queue, e.g. 'sessionRecording' vs 'event'
     */
    _batchKey?: string

    /**
     * If set, overrides and disables config.properties_string_max_length
     */
    _noTruncate?: boolean

    /**
     * If set, skips the batched queue
     */
    send_instantly?: boolean

    /**
     * If set, skips the client side rate limiting
     */
    skip_client_rate_limiting?: boolean

    /**
     * If set, overrides the desired transport method
     */
    transport?: RequestWithOptions['transport']

    /**
     * If set, overrides the current timestamp
     */
    timestamp?: Date
}

export interface CaptureResult {
    uuid: string
    event: EventName
    properties: Properties
    $set?: Properties
    $set_once?: Properties
    timestamp?: Date
}