#pragma once

#include <vector>
#include <string>
#include <cstdint>

#include "Support/Enum.h"
#include "llvm/ADT/StringRef.h"

namespace clice::proto {

using integer = std::int32_t;

/// range in [0, 2^31- 1]
using uinteger = std::uint32_t;

using string = std::string;

using string_literal = llvm::StringLiteral;

template <typename T>
using array = std::vector<T>;

using DocumentUri = std::string;

using URI = std::string;

struct Position {
    /// Line position in a document (zero-based).
    uinteger line;

    /// Character offset on a line in a document (zero-based).
    /// The meaning of this offset is determined by the negotiated
    /// `PositionEncodingKind`.
    uinteger character;

    constexpr friend bool operator== (const Position&, const Position&) = default;
};

struct Range {
    /// The range's start position.
    Position start;

    /// The range's end position.
    Position end;

    constexpr friend bool operator== (const Range&, const Range&) = default;
};

struct Location {
    DocumentUri uri;

    Range range;
};

struct TextEdit {
    /// The range of the text document to be manipulated. To insert
    /// text into a document create a range where start === end.
    Range range;

    // The string to be inserted. For delete operations use an
    // empty string.
    string newText;
};

struct TextDocumentItem {
    /// The text document's URI.
    DocumentUri uri;

    /// The text document's language identifier.
    string languageId;

    /// The version number of this document (it will strictly increase after each
    /// change, including undo/redo).
    uinteger version;

    /// The content of the opened text document.
    string text;
};

struct TextDocumentIdentifier {
    /// The text document's URI.
    DocumentUri uri;
};

struct VersionedTextDocumentIdentifier {
    /// The text document's URI.
    DocumentUri uri;

    std::uint32_t version;
};

struct TextDocumentPositionParams {
    /// The text document.
    TextDocumentIdentifier textDocument;

    /// The position inside the text document.
    Position position;
};

enum class TextDocumentSyncKind {
    None = 0,
    Full = 1,
    Incremental = 2,
};

struct WorkspaceFolder {
    /// The associated URI for this workspace folder.
    URI uri;

    /// The name of the workspace folder. Used to refer to this workspace folder
    /// in the user interface.
    std::string name;
};

enum class ErrorCodes {
    // Defined by JSON-RPC
    ParseError = -32700,
    InvalidRequest = -32600,
    MethodNotFound = -32601,
    InvalidParams = -32602,
    InternalError = -32603,

    /**
     * Error code indicating that a server received a notification or
     * request before the server has received the `initialize` request.
     */
    ServerNotInitialized = -32002,
    UnknownErrorCode = -32001,

    /**
     * A request failed but it was syntactically correct, e.g the
     * method name was known and the parameters were valid. The error
     * message should contain human readable information about why
     * the request failed.
     *
     * @since 3.17.0
     */
    RequestFailed = -32803,

    /**
     * The server cancelled the request. This error code should
     * only be used for requests that explicitly support being
     * server cancellable.
     *
     * @since 3.17.0
     */
    ServerCancelled = -32802,

    /**
     * The server detected that the content of a document got
     * modified outside normal conditions. A server should
     * NOT send this error code if it detects a content change
     * in it unprocessed messages. The result even computed
     * on an older state might still be useful for the client.
     *
     * If a client decides that a result is not of any use anymore
     * the client should cancel the request.
     */
    ContentModified = -32801,

    /**
     * The client has canceled a request and a server has detected
     * the cancel.
     */
    RequestCancelled = -32800,
};

struct TextDocumentParams {
    /// The text document.
    TextDocumentIdentifier textDocument;
};

enum class SymbolKind {};

struct ResolveProvider {
    bool resolveProvider;
};

struct SemanticTokenOptions {
    struct {
        std::vector<std::string> tokenTypes;
        std::vector<std::string> tokenModifiers;
    } legend;

    bool full = true;
};

struct CompletionOptions {
    std::vector<llvm::StringRef> triggerCharacters = {".", "<", ">", ":", "\"", "/", "*"};
    bool resolveProvider = false;
};

struct HeaderContext {
    /// The path of context file.
    std::string file;

    /// The version of context file's unit.
    uint32_t version;

    /// The include location id for further resolving.
    uint32_t include;
};

struct IncludeLocation {
    /// The line of include drective.
    uint32_t line = -1;

    /// The file path of include drective.
    std::string file;
};

struct HeaderContextGroup {
    /// The index path of this header Context.
    std::string indexFile;

    /// The header contexts.
    std::vector<HeaderContext> contexts;
};

struct HeaderContextSwitchParams {
    /// The header file path which wants to switch context.
    std::string header;

    /// The context
    HeaderContext context;
};

}  // namespace clice::proto