#ifndef DATA_H_
#define DATA_H_

#include <stdio.h>
#include <termios.h>
#include <time.h>

#include "define.h"

#include "lisp.h"

typedef struct lsp_client_t LspClient;

/**
 * \struct row_t
 * \brief Store one editor row
 * \param
 * */

typedef struct row
{
    int size; /**< Size of the line */
    int cap; /**< Size of the render line */
    char* chars; /**< Characters of the line */
} row_t;

typedef struct context_buffer_t
{
    int editor_x, editor_y;
    int width, height;
    row_t* rows;
} ContextBuffer;

/**
 * @brief Split modes for screen layout
 */
typedef enum
{
    SPLIT_NONE = 0, // Single buffer fullscreen
    SPLIT_VERTICAL, // Left-right split
    SPLIT_HORIZONTAL // Top-bottom split
} SplitMode;

/**
 * @brief Represents an editor viewport/pane
 */
typedef struct
{
    int buffer_id; // Which buffer this pane displays
    int height; // Height of this pane
    int width; // Width of this pane
    int origin_x, origin_y;
    int cursor_x; // Local cursor x in this pane
    int cursor_y; // Local cursor y in this pane
    int x_offset, y_offset;
    int is_active; // Is this pane currently active
} EditorPane;

/**
 * @brief Screen layout manager
 */
typedef struct
{
    SplitMode mode;
    EditorPane* panes;
    int num_panes;
    int active_pane; // Index of active pane
} ScreenLayout;


typedef struct theme
{
    char* BACKGROUND_COLOR;
    char* COLOR_KEYWORD;
    char* COLOR_TYPE;
    char* COLOR_STRING;
    char* COLOR_COMMENT;
    char* COLOR_NUMBER;
    char* COLOR_DEFAULT;
} theme_t;

enum bufferStatus_e
{
    IDLE,
    READ_ONLY,
    READ_AND_WRITE,
};

struct const_t
{
    int TAB_LENGTH;
    int QUIT_TIMES;
    char* THEME;
    int LSP;
};

struct prefix_t
{
    char prefix_name[64];
    int prefix_id;
};

struct keyBind_t
{
    char* key_sequence;
    int prefix_id;
    Lisp command;
};

// In data.h — add these

#include <pthread.h>

#define LSP_MAX_PENDING 64

typedef enum
{
    LSP_NOT_STARTED = 0,
    LSP_INITIALIZING,
    LSP_READY,
    LSP_SHUTDOWN,
} LspState;

typedef struct
{
    int id;
    void (*callback)(struct lsp_client_t* lsp, const char* json);
} LspPending;

typedef struct lsp_client_t
{
    // ── Process ───────────────────────────────────────────────────────────────
    pid_t pid;
    int write_fd;
    int read_fd;
    int completion_just_arrived;
    int completion_requested;

    int wake_pipe[2]; // [0] = read end (main loop), [1] = write end (reader thread)
    // ── State ─────────────────────────────────────────────────────────────────
    LspState state;
    int next_id;

    // ── Pending requests ──────────────────────────────────────────────────────
    LspPending pending[LSP_MAX_PENDING];
    int pending_count;

    // ── Threading ─────────────────────────────────────────────────────────────
    pthread_t reader_thread;
    pthread_mutex_t lock;
    pthread_cond_t ready_cond; // signaled when state → LSP_READY

    // ── Completion context ────────────────────────────────────────────────────
    int completion_cursor_x; // screen position when
    int completion_cursor_y; // completion was requested
} LspClient;

typedef struct
{
    char label[128]; // display text  e.g. "printf"
    char detail[64]; // type/sig hint e.g. "int (const char *, ...)"
    int kind; // LSP CompletionItemKind (1=Text,2=Method,3=Function…)
} CompletionItem;

typedef struct
{
    CompletionItem items[COMPLETION_MAX_ITEMS];
    int count;
    int selected; // currently highlighted row
    int visible; // is the popup shown?
    int origin_x; // screen col where popup appears
    int origin_y; // screen row where popup appears
} CompletionPopup;

typedef enum { DIAG_ERROR = 1, DIAG_WARNING, DIAG_HINT } DiagSeverity;

typedef struct
{
    int buffer_id;
    int line; // 0-based
    int col_start; // 0-based
    int col_end;
    DiagSeverity severity;
    char message[256];
} Diagnostic;

typedef struct
{
    Diagnostic entries[DIAG_MAX];
    int count;
} DiagnosticList;

enum buffer_type { FILE_BUFF, TERMINAL_BUFF };

struct buffer_t
{
    enum buffer_type type;
    int buffer_id;
    int b_lsp_open;
    int x, y; /**< Position in the file */
    row_t* row;
    int numrows;
    int b_has_changed;
    char* filename;
    char* path;
    char * fullname;
    enum bufferStatus_e state;
    int dirty; /**< Has this buffer been modified since last save */
};

/**
 * \struct editorConfig
 * \brief Containing our editor state.
 */
struct editorConfig
{
    int cursor_x, cursor_y; /**< Cursor position */
    int screenrows; /**< Terminal height*/
    int screencols; /**< Terminal width*/

    ScreenLayout layout;

    LspClient* lsp_client;
    CompletionPopup lsp_completion;
    DiagnosticList lsp_diagnostics;

    int dirty;

    char* status_msg;
    time_t status_msg_time;
    struct termios orig_termios; /**< Terminal communication interface */

    struct const_t constantes;
    int quit_times_buffer;

    char* init_file_path;
    FILE* fd_init_file;
    Lisp env;
    LispContext ctx; /** Lisp context */
    Lisp ctx_data; /** Lisp data context */
    LispError ctx_error; /** Lisp ctx error */

    struct keyBind_t* key_binds;
    int number_of_keybinds;

    struct prefix_t* prefix;
    int number_of_prefix;
    int prefix_state;

    struct buffer_t buffers[64];
    int number_of_buffer;

    theme_t theme;
};

/**
 * \struct abuf
 * \brief Contains text to add before writing to screen.
 * */

struct abuf
{
    char* b; /**< Text that will be printed */
    int len; /**< Length of the text */
};

extern struct editorConfig E;


#endif