/**
* @file OLED_SSD1306_ATY.c
*
* @param Project DEVICE_GENERAL_ATY_LIB
*
* @author ATY
*
* @copyright
*       - Copyright 2017 - 2026 MZ-ATY
*       - This code follows:
*           - MZ-ATY Various Contents Joint Statement -
*               <a href="https://mengze.top/MZ-ATY_VCJS">
*                        https://mengze.top/MZ-ATY_VCJS</a>
*           - CC 4.0 BY-NC-SA -
*               <a href="https://creativecommons.org/licenses/by-nc-sa/4.0/">
*                        https://creativecommons.org/licenses/by-nc-sa/4.0/</a>
*       - Your use will be deemed to have accepted the terms of this statement.
*
* @brief Dev-style implementation for SSD1306 OLED display (I2C)
*
* @version
*       - 2_00_251112 > ATY
*           -# Refactor to Dev-style interface with platform-agnostic callbacks
********************************************************************************
*/

#ifndef __OLED_SSD1306_ATY_C
#define __OLED_SSD1306_ATY_C

#include "OLED_SSD1306_ATY.h"

/* ------------------------ Dev-style helpers & APIs ------------------------ */
static int _oled_write_cmd(OLED_SSD1306_ATY_Dev* dev, uint8_t cmd)
{
    if(!dev || !dev->i2c_write) return -1;
    uint8_t buf[2] = {0x00, cmd};
    return dev->i2c_write(dev->addr, buf, 2, dev->channel);
}

static int _oled_write_data(OLED_SSD1306_ATY_Dev* dev, const uint8_t* data, uint16_t len)
{
    if(!dev || !dev->i2c_write || !data || len == 0) return -1;
    /* 简洁起见，逐字节发送（0x40 + data），兼容性强 */
    for(uint16_t i = 0; i < len; i++)
    {
        uint8_t buf[2] = {0x40, data[i]};
        int rc = dev->i2c_write(dev->addr, buf, 2, dev->channel);
        if(rc) return rc;
    }
    return 0;
}

void OLED_SSD1306_SetPosDev(OLED_SSD1306_ATY_Dev* dev, uint8_t x, uint8_t y)
{
    if(!dev) return;
    _oled_write_cmd(dev, (uint8_t)(0xb0 + y));
    _oled_write_cmd(dev, (uint8_t)(((x & 0xf0) >> 4) | 0x10));
    _oled_write_cmd(dev, (uint8_t)((x & 0x0f) | 0x01));
}

void OLED_SSD1306_FillScreenDev(OLED_SSD1306_ATY_Dev* dev, uint8_t fillData)
{
    if(!dev) return;
    for(uint8_t y = 0; y < 8; y++)
    {
        _oled_write_cmd(dev, (uint8_t)(0xb0 + y));
        _oled_write_cmd(dev, 0x01);
        _oled_write_cmd(dev, 0x10);
        for(uint8_t x = 0; x < X_WIDTH; x++)
        {
            _oled_write_data(dev, &fillData, 1);
        }
    }
}

void OLED_SSD1306_DrawChar8x16Dev(OLED_SSD1306_ATY_Dev* dev, uint8_t x, uint8_t y, const uint8_t symbol[])
{
    if(!dev || !symbol) return;
    if(x > 120) { x = 0; y += 2; }
    OLED_SSD1306_SetPosDev(dev, x, y);
    _oled_write_data(dev, symbol, 8);
    OLED_SSD1306_SetPosDev(dev, x, (uint8_t)(y + 1));
    _oled_write_data(dev, symbol + 8, 8);
}

void OLED_SSD1306_DrawChar16x16Dev(OLED_SSD1306_ATY_Dev* dev, uint8_t x, uint8_t y, const uint8_t symbol[])
{
    if(!dev || !symbol) return;
    if(x > 120) { x = 0; y += 2; }
    OLED_SSD1306_SetPosDev(dev, x, y);
    _oled_write_data(dev, symbol, 16);
    OLED_SSD1306_SetPosDev(dev, x, (uint8_t)(y + 1));
    _oled_write_data(dev, symbol + 16, 16);
}

void OLED_SSD1306_DrawString8x16Dev(OLED_SSD1306_ATY_Dev* dev, uint8_t x, uint8_t y, const char* str, const uint8_t* font)
{
    if(!dev || !str || !font) return;
    uint8_t xi = x, yi = y;
    for(const char* p = str; *p; ++p)
    {
        if(xi > 120) { xi = 0; yi = (uint8_t)(yi + 2); }
        if(yi > 6) break;
        const uint8_t* glyph = font + (((uint8_t)(*p) - 32) * 16);
        OLED_SSD1306_DrawChar8x16Dev(dev, xi, yi, glyph);
        xi = (uint8_t)(xi + 8);
    }
}

int OLED_SSD1306_WriteCmdDev(OLED_SSD1306_ATY_Dev* dev, uint8_t cmd)
{
    return _oled_write_cmd(dev, cmd);
}

int OLED_SSD1306_WriteDataDev(OLED_SSD1306_ATY_Dev* dev, const uint8_t* data, uint16_t len)
{
    return _oled_write_data(dev, data, len);
}

void OLED_SSD1306_InitDev(OLED_SSD1306_ATY_Dev* dev, uint8_t addr, uint8_t channel)
{
    if(!dev) return;
    dev->addr = addr;
    dev->channel = channel;
    if(dev->lock) dev->lock(1);
    /* 0.91" 128x32 init sequence */
    _oled_write_cmd(dev, 0xAE);
    _oled_write_cmd(dev, 0x20);
    _oled_write_cmd(dev, 0x00);
    _oled_write_cmd(dev, 0xb0);
    _oled_write_cmd(dev, 0xc8);
    _oled_write_cmd(dev, 0x00);
    _oled_write_cmd(dev, 0x10);
    _oled_write_cmd(dev, 0x40);
    _oled_write_cmd(dev, 0x81);
    _oled_write_cmd(dev, 0xdf);
    _oled_write_cmd(dev, 0xa1);
    _oled_write_cmd(dev, 0xa6);
    _oled_write_cmd(dev, 0xa8);
    _oled_write_cmd(dev, 0x1F);
    _oled_write_cmd(dev, 0xa4);
    _oled_write_cmd(dev, 0xd3);
    _oled_write_cmd(dev, 0x00);
    _oled_write_cmd(dev, 0xd5);
    _oled_write_cmd(dev, 0xf0);
    _oled_write_cmd(dev, 0xd9);
    _oled_write_cmd(dev, 0x22);
    _oled_write_cmd(dev, 0xda);
    _oled_write_cmd(dev, 0x12);
    _oled_write_cmd(dev, 0xdb);
    _oled_write_cmd(dev, 0x20);
    _oled_write_cmd(dev, 0x8d);
    _oled_write_cmd(dev, 0x14);
    _oled_write_cmd(dev, 0xDA);
    _oled_write_cmd(dev, 0x02);
    _oled_write_cmd(dev, 0xaf);
    OLED_SSD1306_FillScreenDev(dev, 0x00);
    OLED_SSD1306_SetPosDev(dev, 0, 0);
    if(dev->lock) dev->lock(0);
}

/* ------------------------ Legacy implementation (disabled) ------------------------ */
#if 0
void OLED_WriteData(uint8_t oledData)
{
    I2C_Start();
    I2C_WriteByte(0x78);    //Slave address,SA0=0
    I2C_WriteByte(0x40);
    I2C_WriteByte(oledData);
    I2C_Stop();
}

void OLED_WriteCmd(uint8_t oledCmd)
{
    I2C_Start();
    I2C_WriteByte(0x78);    //Slave address,SA0=0
    I2C_WriteByte(0x00);
    I2C_WriteByte(oledCmd);
    I2C_Stop();
}

void OLED_SetPos(uint8_t x, uint8_t y)
{
    OLED_WriteCmd(0xb0 + y);
    OLED_WriteCmd(((x & 0xf0) >> 4) | 0x10);
    OLED_WriteCmd((x & 0x0f) | 0x01);
}


void OLED_FillScreen(uint8_t fillData)
{
    uint8_t y, x;
    for(y = 0; y < 8; y++)
    {
        OLED_WriteCmd(0xb0 + y);
        OLED_WriteCmd(0x01);
        OLED_WriteCmd(0x10);
        for(x = 0; x < X_WIDTH; x++)
            OLED_WriteData(fillData);
    }
}


void OLED_Init(void)
{
    // uint16_t i = 0;
    // for(i = 0; i < 5000; i++){}
    // DelayNms(50);
    // OLED_WriteCmd(0xae);        // Turn off oled panel
    // OLED_WriteCmd(0x00);        // Set low column address
    // OLED_WriteCmd(0x10);        // Set high column address
    // OLED_WriteCmd(0x40);        // Set start line address, Set Mapping RAM Display Start Line (0x00~0x3F)
    // OLED_WriteCmd(0x81);        // Set contrast control register
    // OLED_WriteCmd(BRIGHTNESS);  // Set SEG Output Current Brightness
    // OLED_WriteCmd(0xa1);        // Set SEG/Column Mapping, 0xa0 reverse x, 0xa1 normal x
    // OLED_WriteCmd(0xc8);        // Set COM/Row Scan Direction, 0xc0 reverse y, 0xc8 normal y
    // OLED_WriteCmd(0xa6);        // Set normal display
    // OLED_WriteCmd(0xa8);        // Set multiplex ratio(1 to 64)
    // OLED_WriteCmd(0x3f);        // 1/64 duty
    // OLED_WriteCmd(0xd3);        // Set display offset   Shift Mapping RAM Counter (0x00~0x3F)
    // OLED_WriteCmd(0x00);        // Not offset
    // OLED_WriteCmd(0xd5);        // Set display clock divide ratio/oscillator frequency
    // OLED_WriteCmd(0x80);        // Set divide ratio, Set Clock as 100 Frames/Sec
    // OLED_WriteCmd(0xd9);        // Set pre-charge period
    // OLED_WriteCmd(0xf1);        // Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
    // OLED_WriteCmd(0xda);        // Set com pins hardware configuration
    // OLED_WriteCmd(0x12);
    // OLED_WriteCmd(0xdb);        // Set vcomh
    // OLED_WriteCmd(0x40);        // Set VCOM Deselect Level
    // OLED_WriteCmd(0x20);        // Set Page Addressing Mode (0x00/0x01/0x02)
    // OLED_WriteCmd(0x02);        //
    // OLED_WriteCmd(0x8d);        // Set Charge Pump enable/disable
    // OLED_WriteCmd(0x14);        // Set(0x10) disable
    // OLED_WriteCmd(0xa4);        // Disable Entire Display On (0xa4/0xa5)
    // OLED_WriteCmd(0xa6);        // Disable Inverse Display On (0xa6/a7)
    // OLED_WriteCmd(0xaf);        // Turn on oled panel
    // OLED_FillScreen(0x00);      // Clear screen
    // OLED_SetPos(0, 0);          // Reset origin

    // 0.91
    OLED_WriteCmd(0xAE);
    OLED_WriteCmd(0x20);
    OLED_WriteCmd(0x00);
    OLED_WriteCmd(0xb0);
    OLED_WriteCmd(0xc8);
    OLED_WriteCmd(0x00);
    OLED_WriteCmd(0x10);
    OLED_WriteCmd(0x40);
    OLED_WriteCmd(0x81);
    OLED_WriteCmd(0xdf);
    OLED_WriteCmd(0xa1);
    OLED_WriteCmd(0xa6);
    OLED_WriteCmd(0xa8);
    OLED_WriteCmd(0x1F);
    OLED_WriteCmd(0xa4);
    OLED_WriteCmd(0xd3);
    OLED_WriteCmd(0x00);
    OLED_WriteCmd(0xd5);
    OLED_WriteCmd(0xf0);
    OLED_WriteCmd(0xd9);
    OLED_WriteCmd(0x22);
    OLED_WriteCmd(0xda);
    OLED_WriteCmd(0x12);
    OLED_WriteCmd(0xdb);
    OLED_WriteCmd(0x20);
    OLED_WriteCmd(0x8d);
    OLED_WriteCmd(0x14);
    OLED_WriteCmd(0xDA);
    OLED_WriteCmd(0x02);
    OLED_WriteCmd(0xaf);
    OLED_FillScreen(0x00);      // Clear screen
    OLED_SetPos(0, 0);          // Reset origin
}




void OLED_DrawChar8x16(uint8_t x, uint8_t y, uint8_t symbol[])
{
    uint8_t i = 0;
    if(x > 120) // If x large than max width, then move to next line begining
    {
        x = 0;
        y += 2;
    }

    OLED_SetPos(x, y);

    for(i = 0; i < 8; i++)
    {
        OLED_WriteData(symbol[i]);
    }

    OLED_SetPos(x, y + 1);

    for(i = 0; i < 8; i++)
    {
        OLED_WriteData(symbol[i + 8]);
    }
}


void OLED_DrawChar16x16(uint8_t x, uint8_t y, uint8_t symbol[])
{
    uint8_t i = 0;
    if(x > 120) // If x large than max width, then move to next line begining
    {
        x = 0;
        y += 2;
    }

    OLED_SetPos(x, y);

    for(i = 0; i < 16; i++)
    {
        OLED_WriteData(symbol[i]);
    }

    OLED_SetPos(x, y + 1);

    for(i = 0; i < 16; i++)
    {
        OLED_WriteData(symbol[i + 16]);
    }
}

// void OLED_DrawString8x16(uint8_t x, uint8_t y, uint8_t* str, uint8_t len, uint8_t* font)
// {
//     uint8_t i = 0;
//     for(i = 0; i < len; i++)
//     {
//         if(x > 120)
//         {
//             x = 0;
//             y += 2;
//         }
//         if(y > 6)
//             break;
//         OLED_DrawChar8x16(x, y, font + ((str[i] - 32) * 16));
//         x += 8;
//     }
// }




uint8_t NumToChar(uint8_t num)
{
    if(num >= 0 && num <= 9)
        return num + 32 + 16;
    return num;                 // Not a number between 0-9
}

void OLED_DisNumber(uint8_t x, uint8_t y, uint8_t disData)
{
    OLED_SetPos(x, y);
    OLED_DrawChar8x16(x, y, FontSongTi8x16 + ((NumToChar(disData) - 32) * 16));
}

void OLED_DisValue(uint8_t x, uint8_t y, uint8_t* disData, uint8_t disLength)
{
    uint8_t i = 0;

    for(i = 0; i < disLength; i++)
    {
        OLED_SetPos(x, y);
        OLED_DrawChar8x16(x, y, FontSongTi8x16 + ((NumToChar(disData[i]) - 32) * 16));
        x += 8;
    }
}




void OLED_Dis_Welcom(void)
{
    uint8_t beginX = 28, beginY = 2;

    OLED_DrawString8x16(0, 0, "I. Astrol", FontSongTi8x16);
    // OLED_DrawString8x16(0, 16, "HT", 2, FontSongTi8x16);
}
// todo: not tested
#endif /* legacy implementation disabled in Dev refactor */


#endif /* __OLED_SSD1306_ATY_C */