/**
 * @packageDocumentation
 *
 * This module provides utilities for handling and updating links within Obsidian vaults. It includes
 * functions to split paths, update links in files, and generate markdown links with various options.
 */
import type { App, CachedMetadata, Plugin, Reference, TFile } from 'obsidian';
import type { Promisable } from 'type-fest';
import type { MaybeReturn } from '../Type.cjs';
import type { PathOrFile } from './FileSystem.cjs';
import type { ProcessOptions } from './Vault.cjs';
/**
 * A style of the link path.
 */
export declare enum LinkPathStyle {
    /**
     * Use the absolute path in the vault.
     *
     * @example `[[path/from/the/vault/root/target]]`
     */
    AbsolutePathInVault = "AbsolutePathInVault",
    /**
     * Use the default link path style defined in Obsidian settings.
     */
    ObsidianSettingsDefault = "ObsidianSettingsDefault",
    /**
     * Use the relative path to the source.
     *
     * @example `[[../../relative/path/to/target]]`
     */
    RelativePathToTheSource = "RelativePathToTheSource",
    /**
     * Use the shortest path when possible.
     *
     * @example `[[shortest-path-to-target]]`
     */
    ShortestPathWhenPossible = "ShortestPathWhenPossible"
}
/**
 * A style of the link.
 */
export declare enum LinkStyle {
    /**
     * Force the link to be in markdown format.
     *
     * @example `[alias](path/to/target.md)`
     */
    Markdown = "Markdown",
    /**
     * Use the default link style defined in Obsidian settings.
     */
    ObsidianSettingsDefault = "ObsidianSettingsDefault",
    /**
     * Preserve the existing link style.
     */
    PreserveExisting = "PreserveExisting",
    /**
     * Force the link to be in wikilink format.
     *
     * @example `[[path/to/target]]`
     * @example `[[path/to/target|alias]]`
     */
    Wikilink = "Wikilink"
}
/**
 * Options for {@link convertLink}.
 */
export interface ConvertLinkOptions {
    /**
     * An Obsidian app instance.
     */
    app: App;
    /**
     * A reference for the link.
     */
    link: Reference;
    /**
     * A style of the link.
     */
    linkStyle?: LinkStyle;
    /**
     * A source file containing the link.
     */
    newSourcePathOrFile: PathOrFile;
    /**
     * An old path of the link.
     */
    oldSourcePathOrFile?: PathOrFile;
    /**
     * Whether to update file name alias. Defaults to `true`.
     */
    shouldUpdateFileNameAlias?: boolean;
}
/**
 * Options for {@link generateMarkdownLink}.
 */
export interface GenerateMarkdownLinkOptions {
    /**
     * An alias for the link.
     *
     * @example `[[alias|link]]`
     * @example `[alias](link.md)`
     */
    alias?: string;
    /**
     * An Obsidian app instance.
     */
    app: App;
    /**
     * Indicates if the link should be embedded. If not provided, it will be inferred based on the file type.
     *
     * If `true`: `![[target]]`.
     *
     * If `false`: `[[target]]`.
     */
    isEmbed?: boolean;
    /**
     * Whether to allow an empty alias for embeds. Defaults to `true`.
     *
     * Applicable only if the result link style is {@link LinkStyle.Markdown}.
     *
     * If `true`: `![](foo.png)`.
     *
     * If `false`: `![foo](foo.png)`.
     */
    isEmptyEmbedAliasAllowed?: boolean;
    /**
     * Whether to allow non-existing files. Defaults to `false`.
     *
     * If `false` and {@link targetPathOrFile} is a non-existing file, an error will be thrown.
     */
    isNonExistingFileAllowed?: boolean;
    /**
     * Whether to allow a single subpath. Defaults to `true`.
     *
     * Applicable only if {@link targetPathOrFile} and {@link sourcePathOrFile} are the same file.
     *
     * If `true`: `[[#subpath]]`.
     *
     * If `false`: `[[source#subpath]]`
     */
    isSingleSubpathAllowed?: boolean;
    /**
     * A style of the link path.
     */
    linkPathStyle?: LinkPathStyle;
    /**
     * A style of the link.
     */
    linkStyle?: LinkStyle;
    /**
     * An original link text.
     *
     * If provided, it will be used to infer the values of
     *
     * - {@link isEmbed}
     * - {@link linkStyle}
     * - {@link shouldUseAngleBrackets}
     * - {@link shouldUseLeadingDotForRelativePaths}
     * - {@link shouldUseLeadingSlashForAbsolutePaths}
     *
     * These inferred values will be overridden by corresponding settings if specified.
     */
    originalLink?: string;
    /**
     * Whether to escape the alias. Defaults to `false`.
     *
     * Applicable only if the result link style is {@link LinkStyle.Markdown}.
     *
     * If `true`: `[\*\*alias\*\*](link.md)`.
     *
     * If `false`: `[**alias**](link.md)`.
     */
    shouldEscapeAlias?: boolean;
    /**
     * Whether to include the attachment extension in the embed alias. Defaults to `false`.
     *
     * Applicable only if {@link isEmptyEmbedAliasAllowed} is `false`.
     *
     * If `true`: `[foo.png](foo.png)`.
     *
     * If `false`: `[foo](foo.png)`.
     */
    shouldIncludeAttachmentExtensionToEmbedAlias?: boolean;
    /**
     * Indicates if the link should use angle brackets. Defaults to `false`.
     *
     * Applicable only if {@link linkStyle} is {@link LinkStyle.Markdown}.
     *
     * If `true`: `[alias](<path with spaces.md>)`.
     *
     * If `false`: `[alias](path%20with%20spaces.md)`.
     */
    shouldUseAngleBrackets?: boolean;
    /**
     * Indicates if the link should use a leading dot. Defaults to `false`.
     *
     * Applicable only if {@link linkPathStyle} is {@link LinkPathStyle.RelativePathToSource}.
     *
     * If `true`: `[[./relative/path/to/target]]`
     *
     * If `false`: `[[relative/path/to/target]]`
     */
    shouldUseLeadingDotForRelativePaths?: boolean;
    /**
     * Indicates if the link should use a leading slash. Defaults to `false`.
     *
     * Applicable only if {@link linkPathStyle} is {@link LinkPathStyle.AbsolutePathInVault}.
     *
     * If `true`: `[[/absolute/path/to/target]]`
     *
     * If `false`: `[[absolute/path/to/target]]`
     */
    shouldUseLeadingSlashForAbsolutePaths?: boolean;
    /**
     * A source path of the link.
     */
    sourcePathOrFile: PathOrFile;
    /**
     * A subpath of the link.
     *
     * Should be empty or start with `#`.
     *
     * @example `[[link-with-empty-subpath]]`
     * @example `[[link-with-subpath#subpath]]`
     * @example `[[link-with-subpath#subpath#nested-subpath]]`
     */
    subpath?: string;
    /**
     * A target path or file.
     */
    targetPathOrFile: PathOrFile;
}
/**
 * Options for {@link generateRawMarkdownLink}.
 */
export interface GenerateRawMarkdownLinkOptions {
    /**
     * An alias of the link. Defaults to `undefined`.
     */
    alias?: string | undefined;
    /**
     * Whether the link should be an embed link. Defaults to `false`.
     */
    isEmbed?: boolean;
    /**
     * Whether the link should be a wikilink.
     */
    isWikilink: boolean;
    /**
     * Whether to escape the alias. Applicable only if {@link isWikilink} is `false`. Defaults to `false`.
     */
    shouldEscapeAlias?: boolean;
    /**
     * Whether to use angle brackets. Applicable only if {@link isWikilink} is `false`. Defaults to `false`.
     */
    shouldUseAngleBrackets?: boolean;
    /**
     * A title of the link.
     */
    title?: string;
    /**
     * An URL of the link.
     */
    url: string;
}
/**
 * A result of parsing a link.
 */
export interface ParseLinkResult {
    /**
     * An alias of the link.
     *
     * @example
     * ```
     * [\*alias\*](link.md) -> \*alias\*
     * ```
     */
    alias?: string;
    /**
     * An encoded URL of the link.
     *
     * @example
     * ```
     * [alias](<link with space.md>) -> link%20with%20space.md
     * ```
     */
    encodedUrl?: string;
    /**
     * An end offset of the link in the original text.
     */
    endOffset: number;
    /**
     * Indicates if the link has angle brackets.
     *
     * @example
     * ```
     * [alias](<link.md>) -> true
     * [alias](link.md) -> false
     * ```
     */
    hasAngleBrackets?: boolean;
    /**
     * Indicates if the link is an embed link.
     *
     * @example
     * ```
     * ![[alias]] -> true
     * [[alias]] -> false
     * ```
     */
    isEmbed: boolean;
    /**
     * Indicates if the link is external.
     *
     * @example
     * ```
     * [alias](https://example.com) -> true
     * [alias](file.md) -> false
     * ```
     */
    isExternal: boolean;
    /**
     * Indicates if the link is a wikilink.
     *
     * @example
     * ```
     * [[alias]] -> true
     * [alias](link.md) -> false
     * ```
     */
    isWikilink: boolean;
    /**
     * A raw link text.
     *
     * @example
     * ```
     * [alias](link.md) -> [alias](link.md)
     * ```
     */
    raw: string;
    /**
     * A start offset of the link in the original text.
     */
    startOffset: number;
    /**
     * A title of the link.
     *
     * @example
     * ```
     * [alias](link.md "title") -> title
     * ```
     */
    title?: string;
    /**
     * An unescaped alias of the link.
     *
     * @example
     * ```
     * [\*alias\*](link.md) -> *alias*
     * ```
     */
    unescapedAlias?: string;
    /**
     * An URL of the link.
     *
     * @example
     * ```
     * [alias](link%20with%20space.md) -> link with space.md
     * ```
     */
    url: string;
}
/**
 * Options for {@link shouldResetAlias}.
 */
export interface ShouldResetAliasOptions {
    /**
     * An Obsidian app instance.
     */
    app: App;
    /**
     * A display text of the link.
     */
    displayText: string | undefined;
    /**
     * Indicates if the link is a wikilink.
     */
    isWikilink?: boolean;
    /**
     * A source path of the link.
     */
    newSourcePathOrFile: PathOrFile;
    /**
     * An old source file containing the link.
     */
    oldSourcePathOrFile?: PathOrFile;
    /**
     * An old target path of the link.
     */
    oldTargetPath: PathOrFile;
    /**
     * A target path or file.
     */
    targetPathOrFile: PathOrFile;
}
/**
 * Splits a link into its link path and subpath.
 */
export interface SplitSubpathResult {
    /**
     * A link path.
     */
    linkPath: string;
    /**
     * A subpath.
     */
    subpath: string;
}
/**
 * Options for {@link updateLink}.
 */
export interface UpdateLinkOptions {
    /**
     * An Obsidian app instance.
     */
    app: App;
    /**
     * A reference for the link.
     */
    link: Reference;
    /**
     * Whether to force markdown links.
     */
    linkStyle?: LinkStyle;
    /**
     * A source file containing the link.
     */
    newSourcePathOrFile: PathOrFile;
    /**
     * A file associated with the link.
     */
    newTargetPathOrFile: PathOrFile;
    /**
     * An old source file containing the link.
     */
    oldSourcePathOrFile?: PathOrFile;
    /**
     * An old path of the file.
     */
    oldTargetPathOrFile?: PathOrFile;
    /**
     * Whether to update file name alias. Defaults to `true`.
     */
    shouldUpdateFileNameAlias?: boolean;
}
/**
 * Options for {@link updateLinksInFile}.
 */
export interface UpdateLinksInFileOptions extends ProcessOptions {
    /**
     * An Obsidian app instance.
     */
    app: App;
    /**
     * A style of the link.
     */
    linkStyle?: LinkStyle;
    /**
     * A file to update the links in.
     */
    newSourcePathOrFile: PathOrFile;
    /**
     * An old path of the file.
     */
    oldSourcePathOrFile?: PathOrFile;
    /**
     * Whether to update only embedded links.
     */
    shouldUpdateEmbedOnlyLinks?: boolean;
    /**
     * Whether to update file name alias. Defaults to `true`.
     */
    shouldUpdateFileNameAlias?: boolean;
}
/**
 * Options for {@link updateLinksInContent}.
 */
interface UpdateLinksInContentOptions {
    /**
     * An Obsidian app instance.
     */
    app: App;
    /**
     * A content to update the links in.
     */
    content: string;
    /**
     * A style of the link.
     */
    linkStyle?: LinkStyle;
    /**
     * A new source path or file.
     */
    newSourcePathOrFile: PathOrFile;
    /**
     * An old source path or file.
     */
    oldSourcePathOrFile?: PathOrFile;
    /**
     * Whether to update only embedded links.
     */
    shouldUpdateEmbedOnlyLinks?: boolean;
    /**
     * Whether to update file name alias.
     */
    shouldUpdateFileNameAlias?: boolean;
}
/**
 * Converts a link to a new path.
 *
 * @param options - The options for converting the link.
 * @returns The converted link.
 */
export declare function convertLink(options: ConvertLinkOptions): string;
/**
 * Edits the backlinks for a file or path.
 *
 * @param app - The Obsidian application instance.
 * @param pathOrFile - The path or file to edit the backlinks for.
 * @param linkConverter - The function that converts each link.
 * @param processOptions - Optional options for retrying the operation.
 * @returns A {@link Promise} that resolves when the backlinks have been edited.
 */
export declare function editBacklinks(app: App, pathOrFile: PathOrFile, linkConverter: (link: Reference) => Promisable<MaybeReturn<string>>, processOptions?: ProcessOptions): Promise<void>;
/**
 * Edits the backlinks for a file or path.
 *
 * @param app - The Obsidian application instance.
 * @param pathOrFile - The path or file to edit the backlinks for.
 * @param linkConverter - The function that converts each link.
 * @param processOptions - Optional options for retrying the operation.
 * @returns A {@link Promise} that resolves when the backlinks have been edited.
 */
export declare function editLinks(app: App, pathOrFile: PathOrFile, linkConverter: (link: Reference) => Promisable<MaybeReturn<string>>, processOptions?: ProcessOptions): Promise<void>;
/**
 * Edits the links in a content string.
 *
 * @param app - The Obsidian application instance.
 * @param content - The content to edit the links in.
 * @param linkConverter - The function that converts each link.
 * @param abortSignal - The abort signal to control the execution of the function.
 * @returns The promise that resolves to the updated content.
 */
export declare function editLinksInContent(app: App, content: string, linkConverter: (link: Reference) => Promisable<MaybeReturn<string>>, abortSignal?: AbortSignal): Promise<string>;
/**
 * Encodes a URL.
 *
 * @param url - The URL to encode.
 * @returns The encoded URL.
 */
export declare function encodeUrl(url: string): string;
/**
 * Escapes the alias of a markdown link.
 *
 * @param alias - An alias of a markdown link.
 * @returns An escaped alias.
 *
 * @example
 * ```ts
 * escapeAlias('**alias**') // '\\*\\*alias\\*\\*'
 * ```
 */
export declare function escapeAlias(alias: string): string;
/**
 * Extracts the file associated with a link.
 *
 * @param app - The Obsidian application instance.
 * @param link - The reference cache for the link.
 * @param sourcePathOrFile - The source path or file.
 * @param shouldAllowNonExistingFile - Whether to allow non-existing files. Defaults to `false`.
 * @returns The file associated with the link, or null if not found.
 */
export declare function extractLinkFile(app: App, link: Reference, sourcePathOrFile: PathOrFile, shouldAllowNonExistingFile?: boolean): null | TFile;
/**
 * Fixes the frontmatter markdown links in the provided metadata cache.
 *
 * @param cache - The metadata cache to fix the frontmatter markdown links in.
 * @returns Whether the frontmatter markdown links were fixed.
 */
export declare function fixFrontmatterMarkdownLinks(cache: CachedMetadata): boolean;
/**
 * Generates a markdown link based on the provided parameters.
 *
 * @param options - The options for generating the markdown link.
 * @returns The generated markdown link.
 */
export declare function generateMarkdownLink(options: GenerateMarkdownLinkOptions): string;
/**
 * Generates a raw markdown link based on the provided options.
 *
 * @param options - The options for generating a raw markdown link.
 * @returns A raw markdown link.
 */
export declare function generateRawMarkdownLink(options: GenerateRawMarkdownLinkOptions): string;
/**
 * Parses a link into its components.
 *
 * @param str - The link to parse.
 * @returns The parsed link.
 */
export declare function parseLink(str: string): null | ParseLinkResult;
/**
 * Parses all links in a string.
 *
 * @param str - The string to parse the links in.
 * @returns The parsed links.
 */
export declare function parseLinks(str: string): ParseLinkResult[];
/**
 * Registers a function that returns default options for generating a markdown link.
 *
 * @param plugin - The plugin instance.
 * @param fn - The function that returns the default options.
 */
export declare function registerGenerateMarkdownLinkDefaultOptionsFn(plugin: Plugin, fn: () => Partial<GenerateMarkdownLinkOptions>): void;
/**
 * Determines if the alias of a link should be reset.
 *
 * @param options - The options for determining if the alias should be reset.
 * @returns Whether the alias should be reset.
 */
export declare function shouldResetAlias(options: ShouldResetAliasOptions): boolean;
/**
 * Splits a link into its link path and subpath.
 *
 * @param link - The link to split.
 * @returns An object containing the link path and subpath.
 */
export declare function splitSubpath(link: string): SplitSubpathResult;
/**
 * Tests whether a link uses angle brackets, possibly embed:
 * `[title](<link>)`, `![title](<link>)`.
 *
 * @param link - Link to test
 * @returns Whether the link uses angle brackets
 */
export declare function testAngleBrackets(link: string): boolean;
/**
 * Tests whether a link is an embed link:
 * `![[link]]`, `![title](link)`.
 *
 * @param link - Link to test
 * @returns Whether the link is an embed link
 */
export declare function testEmbed(link: string): boolean;
/**
 * Tests whether a link has a leading dot, possibly embed:
 * `[[./link]]`, `[title](./link)`, `[title](<./link>)`,
 * `![[./link]]`, `![title](./link)`, `![title](<./link>)`.
 *
 * @param link - Link to test
 * @returns Whether the link has a leading dot
 */
export declare function testLeadingDot(link: string): boolean;
/**
 * Tests whether a link has a leading slash, possibly embed:
 * `[[/link]]`, `[title](/link)`, `[title](</link>)`,
 * `![[/link]]`, `![title](/link)`, `![title](</link>)`.
 *
 * @param link - Link to test
 * @returns Whether the link has a leading slash
 */
export declare function testLeadingSlash(link: string): boolean;
/**
 * Tests whether a link is a wikilink, possibly embed:
 * `[[link]]`, `![[link]]`.
 *
 * @param link - Link to test
 * @returns Whether the link is a wikilink
 */
export declare function testWikilink(link: string): boolean;
/**
 * Unescapes the alias of a markdown link.
 *
 * @param escapedAlias - An escaped alias.
 * @returns An unescaped alias.
 *
 * @example
 * ```ts
 * unescapeAlias('\\*\\*alias\\*\\*') // '**alias**'
 * ```
 */
export declare function unescapeAlias(escapedAlias: string): string;
/**
 * Updates a link based on the provided parameters.
 *
 * @param options - The options for updating the link.
 * @returns The updated link.
 */
export declare function updateLink(options: UpdateLinkOptions): string;
/**
 * Updates the links in a content string based on the provided parameters.
 *
 * @param options - The options for updating the links.
 * @returns A {@link Promise} that resolves to the content with updated links.
 */
export declare function updateLinksInContent(options: UpdateLinksInContentOptions): Promise<string>;
/**
 * Updates the links in a file based on the provided parameters.
 *
 * @param options - The options for updating the links.
 * @returns A {@link Promise} that resolves when the links are updated.
 */
export declare function updateLinksInFile(options: UpdateLinksInFileOptions): Promise<void>;
export {};