shoot-miniprograms/src/util.js

import websocket from "@/websocket";
import { isGamingAPI, getGameAPI } from "@/apis";

export const formatTimestamp = (timestamp) => {
  const date = new Date(timestamp * 1000);
  const year = date.getFullYear();
  const month = date.getMonth() + 1;
  const day = date.getDate();

  return `${year}-${month}-${day}`;
};

export const checkConnection = () => {
  uni.sendSocketMessage({
    data: JSON.stringify({ event: "ping", data: {} }),
    fail: () => {
      websocket.closeWebSocket();
      const token = uni.getStorageSync(
        `${uni.getAccountInfoSync().miniProgram.envVersion}_token`
      );
      if (!token) return;
      // 如果发送失败，说明连接已断开，需要重新连接
      websocket.createWebSocket(token, (content) => {
        uni.$emit("socket-inbox", content);
      });
    },
  });
};

export const debounce = (fn, delay = 300) => {
  let timer = null;
  return async (...args) => {
    if (timer) clearTimeout(timer);
    return new Promise((resolve) => {
      timer = setTimeout(async () => {
        try {
          const result = await fn(...args);
          resolve(result);
        } finally {
          timer = null;
        }
      }, delay);
    });
  };
};

export function renderScores(ctx, arrows = []) {
  let rowIndex = 0;
  arrows.forEach((item, i) => {
    rowIndex = i;
    if (arrows.length >= 36 && i < 36) {
      ctx.drawImage(
        "../static/score-bg.png",
        16 + (i % 9) * 30,
        290 + Math.ceil((i + 1) / 9) * 30,
        27,
        27,
        "center"
      );
      renderText(
        ctx,
        item.ring,
        18,
        "#fed847",
        29.5 + (i % 9) * 30,
        310 + Math.ceil((i + 1) / 9) * 30,
        "center"
      );
    } else if (arrows.length >= 12 && i < 12) {
      if (i > 5) rowIndex = i - 6;
      ctx.drawImage(
        "../static/score-bg.png",
        24 + rowIndex * 42,
        i > 5 ? 362 : 320,
        38,
        38
      );
      renderText(
        ctx,
        item.ring,
        23,
        "#fed847",
        43 + rowIndex * 42,
        i > 5 ? 389 : 347,
        "center"
      );
    }
  });
}

export function renderLine(ctx, from) {
  ctx.beginPath();
  ctx.lineWidth = 1;
  ctx.strokeStyle = "rgba(255, 255, 255, 0.3)";
  const length = 35;
  ctx.moveTo(from, 295);
  ctx.lineTo(from + length, 295);
  ctx.stroke();
}

export function renderText(ctx, text, size, color, x, y, textAlign = "left") {
  ctx.setFontSize(size);
  ctx.setFillStyle(color);
  ctx.setTextAlign(textAlign);
  ctx.fillText(text, x, y);
}

export function renderRankTitle(ctx, text) {
  const fontSize = 8;
  const textWidth = ctx.measureText(text).width;
  const padding = 8; // 文字与背景边缘的间距
  const radius = 8; // 圆角半径
  const textX = 76;
  const textY = 50;
  const x = textX - padding - 10; // 文字 x 坐标减去内边距
  const y = textY - fontSize - padding / 2 + 2; // 文字 y 坐标减去字体大小和内边距
  const width = textWidth + padding * 2 - 25; // 背景宽度
  const height = fontSize + padding - 2; // 背景高度

  // 开始绘制圆角矩形
  ctx.beginPath();
  // 从左上角开始，顺时针绘制
  ctx.moveTo(x + radius, y);
  // 上边框
  ctx.lineTo(x + width - radius, y);
  ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
  // 右边框
  ctx.lineTo(x + width, y + height - radius);
  ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
  // 下边框
  ctx.lineTo(x + radius, y + height);
  ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
  // 左边框
  ctx.lineTo(x, y + radius);
  ctx.quadraticCurveTo(x, y, x + radius, y);

  // 设置背景颜色并填充
  ctx.fillStyle = "#5F51FF";
  ctx.fill();
  ctx.setFontSize(fontSize);
  ctx.setTextAlign("center");
  ctx.setFillStyle("rgba(255, 255, 255, 0.9)");
  ctx.fillText(text, textX, textY); // 绘制文字
}

export const drawRoundImage = async (
  ctx,
  imgPath,
  x,
  y,
  width,
  height,
  radius
) => {
  ctx.save();
  // 创建圆角路径
  ctx.beginPath();
  ctx.moveTo(x + radius, y);

  // 右上角
  ctx.lineTo(x + width - radius, y);
  ctx.arcTo(x + width, y, x + width, y + radius, radius);

  // 右下角
  ctx.lineTo(x + width, y + height - radius);
  ctx.arcTo(x + width, y + height, x + width - radius, y + height, radius);

  // 左下角
  ctx.lineTo(x + radius, y + height);
  ctx.arcTo(x, y + height, x, y + height - radius, radius);

  // 左上角
  ctx.lineTo(x, y + radius);
  ctx.arcTo(x, y, x + radius, y, radius);

  ctx.clip();
  // 绘制图片
  ctx.drawImage(imgPath, x, y, width, height);
  ctx.restore();
};

export async function generateCanvasImage(canvasId, type, user, data) {
  try {
    var ctx = uni.createCanvasContext(canvasId);
    const width = 300;
    const height = 534;
    ctx.drawImage("../static/share-bg.png", 0, 0, width, height);
    drawRoundImage(ctx, user.avatar, 17, 20, 32, 32, 20);
    ctx.drawImage(user.lvlImage, 12, 15, 42, 42);
    renderText(ctx, user.nickName, 13, "#fff", 58, 34);
    renderRankTitle(ctx, user.lvlName);

    let titleImage = "../static/first-try-title.png";
    let subTitle = "正式开启弓箭手之路";
    if (type > 1) {
      subTitle = `今日弓箭练习打卡 ${data.createdAt
        .split(" ")[0]
        .replaceAll("-", ".")}`;
    }
    if (type == 2) {
      titleImage = "../static/practise-one-title.png";
    } else if (type == 3) {
      titleImage = "../static/practise-two-title.png";
    }
    ctx.drawImage(titleImage, (width - 160) / 2, 160, 160, 40);
    const subTitleWidth = ctx.measureText(subTitle).width;
    renderText(
      ctx,
      subTitle,
      18,
      "#fff",
      width / 2 - subTitleWidth - (type > 1 ? 15 : 9),
      220
    );
    renderText(ctx, "共", 14, "#fff", 122, 300);
    const totalRing = data.arrows.reduce((last, next) => last + next.ring, 0);
    renderText(ctx, totalRing, 14, "#fed847", 148, 300, "center");
    renderText(ctx, "环", 14, "#fff", 161, 300);
    renderLine(ctx, 77);
    renderLine(ctx, 185);
    renderScores(ctx, data.arrows);
    ctx.drawImage("../static/qr-code.png", width * 0.06, height * 0.87, 52, 52);
    renderText(ctx, "射灵平台", 12, "#fff", width * 0.25, height * 0.9);
    renderText(
      ctx,
      "快加入我们一起玩吧~",
      9,
      "rgba(255, 255, 255, 0.5)",
      width * 0.25,
      height * 0.93
    );
    renderText(
      ctx,
      "后羿就是这样练成的",
      9,
      "rgba(255, 255, 255, 0.5)",
      width * 0.25,
      height * 0.955
    );
    // ctx.drawImage("../static/qr-code.png", width * 0.75, height * 0.86, 56, 56);
    ctx.draw();
  } catch (err) {
    console.log(err);
  }
}

export const wxShare = async () => {
  try {
    const res = await uni.canvasToTempFilePath({
      canvasId: "shareCanvas",
      fileType: "png", // 图片格式，可选 jpg 或 png
      quality: 1, // 图片质量，取值范围为 0-1
    });
    wx.showShareImageMenu({
      entrancePath: "pages/index",
      path: res.tempFilePath,
    });
  } catch (error) {
    uni.showToast({
      title: "生成图片失败",
      icon: "error",
    });
  }
};

export const isGameEnded = async (battleId) => {
  const isGaming = await isGamingAPI();
  if (!isGaming) {
    const result = await getGameAPI(battleId);
    if (result.mode) {
      uni.redirectTo({
        url: `/pages/battle-result?battleId=${battleId}`,
      });
    } else {
      uni.showToast({
        title: "比赛已结束",
        icon: "none",
      });
      setTimeout(() => {
        uni.navigateBack();
      }, 1000);
    }
  }
  return !isGaming;
};

// 获取元素尺寸和位置信息
export const getElementRect = (classname) => {
  return new Promise((resolve) => {
    const query = uni.createSelectorQuery();
    query
      .select(classname)
      .boundingClientRect((rect) => {
        resolve(rect);
      })
      .exec();
  });
};

const calcNormalBowTarget = (x, y, diameter, arrowRadius) => {
  // 将弓箭左上角坐标转换为圆心坐标
  const arrowCenterX = x + arrowRadius;
  const arrowCenterY = y + arrowRadius;

  // 计算靶心坐标（靶纸中心）
  const centerX = diameter / 2;
  const centerY = diameter / 2;

  // 计算弓箭圆心到靶心的距离
  const deltaX = arrowCenterX - centerX;
  const deltaY = arrowCenterY - centerY;
  const distanceToCenter = Math.sqrt(deltaX * deltaX + deltaY * deltaY);

  // 计算弓箭边缘到靶心的最近距离
  const distance = Math.max(0, distanceToCenter - arrowRadius);

  // 计算靶纸半径（取宽高中较小值的一半）
  const targetRadius = diameter / 2;

  // 计算相对距离（0-1之间）
  let relativeDistance = distance / targetRadius;

  // 全环靶有10个环，每个环占半径的10%
  // 从外到内：1环到10环
  // 距离越近靶心，环数越高
  if (relativeDistance <= 0.05) return "X";
  if (relativeDistance <= 0.1) return 10;
  if (relativeDistance <= 0.2) return 9;
  if (relativeDistance <= 0.3) return 8;
  if (relativeDistance <= 0.4) return 7;
  if (relativeDistance <= 0.5) return 6;
  if (relativeDistance <= 0.6) return 5;
  if (relativeDistance <= 0.7) return 4;
  if (relativeDistance <= 0.8) return 3;
  if (relativeDistance <= 0.9) return 2;
  if (relativeDistance <= 1) return 1;
  return 0; // 脱靶
};

const calcHalfBowTarget = (x, y, diameter, arrowRadius, noX = false) => {
  // 将弓箭左上角坐标转换为圆心坐标
  const arrowCenterX = x + arrowRadius;
  const arrowCenterY = y + arrowRadius;

  // 计算靶心坐标（靶纸中心）
  const centerX = diameter / 2;
  const centerY = diameter / 2;

  // 计算弓箭圆心到靶心的距离
  const deltaX = arrowCenterX - centerX;
  const deltaY = arrowCenterY - centerY;
  const distanceToCenter = Math.sqrt(deltaX * deltaX + deltaY * deltaY);

  // 计算弓箭边缘到靶心的最近距离
  const distance = Math.max(0, distanceToCenter - arrowRadius);

  // 计算靶纸半径（取宽高中较小值的一半）
  const targetRadius = diameter / 2;

  // 计算相对距离（0-1之间）
  let relativeDistance = distance / targetRadius;
  if (relativeDistance <= 0.1) return noX ? 10 : "X";
  if (relativeDistance <= 0.2) return noX ? 9 : 10;
  if (relativeDistance <= 0.4) return 9;
  if (relativeDistance <= 0.6) return 8;
  if (relativeDistance <= 0.8) return 7;
  if (relativeDistance <= 0.992) return 6;

  return 0; // 脱靶
};

export const calcTripleBowTarget = (
  x,
  y,
  diameter,
  arrowRadius,
  noX = false
) => {
  const side = diameter * 0.324;
  if (x / diameter >= 0.316) {
    if (y / diameter >= 0.654) {
      return calcHalfBowTarget(
        x - diameter * 0.342,
        y - diameter * 0.68,
        side,
        arrowRadius,
        noX
      );
    }
    if (y / diameter >= 0.313) {
      return calcHalfBowTarget(
        x - diameter * 0.342,
        y - diameter * 0.34,
        side,
        arrowRadius,
        noX
      );
    }
    if (y / diameter >= -0.023) {
      return calcHalfBowTarget(
        x - diameter * 0.342,
        y - diameter * 0.005,
        side,
        arrowRadius,
        noX
      );
    }
  }
  return 0;
};

export const calcPinBowTarget = (x, y, diameter, arrowRadius, noX = false) => {
  const side = diameter * 0.484;
  let r1 = 0;
  let r2 = 0;
  let r3 = 0;
  if (x / diameter >= 0.23 && y / diameter >= 0.005) {
    r1 = calcHalfBowTarget(
      x - diameter * 0.26,
      y - diameter * 0.0345,
      side,
      arrowRadius,
      noX
    );
  }
  if (x / diameter >= -0.03 && y / diameter >= 0.456) {
    r2 = calcHalfBowTarget(x, y - diameter * 0.486, side, arrowRadius, noX);
  }
  if (x / diameter >= 0.49 && y / diameter >= 0.456) {
    r3 = calcHalfBowTarget(
      x - diameter * 0.52,
      y - diameter * 0.49,
      side,
      arrowRadius,
      noX
    );
  }
  return r1 || r2 || r3;
};

export const calcRing = (bowtargetId, x, y, diameter, arrowRadius = 5) => {
  if (bowtargetId < 4) {
    return calcNormalBowTarget(x, y, diameter, arrowRadius);
  } else if (bowtargetId < 7) {
    return calcHalfBowTarget(x, y, diameter + 2, arrowRadius);
  } else if (bowtargetId === 7) {
    return calcTripleBowTarget(x, y, diameter, arrowRadius);
  } else if (bowtargetId === 8) {
    return calcPinBowTarget(x, y, diameter, arrowRadius);
  } else if (bowtargetId === 9) {
    return calcTripleBowTarget(x, y, diameter, arrowRadius, true);
  } else if (bowtargetId === 10) {
    return calcPinBowTarget(x, y, diameter, arrowRadius, true);
  }
  return 0;
};

export const generateShareCardImage = (canvasId, date, actual, total) => {
  try {
    const ctx = uni.createCanvasContext(canvasId);
    const imgUrl =
      "https://static.shelingxingqiu.com/attachment/2025-11-04/ddzpm4tyh5vunyacsr.png";
    const drawWidth = 375;
    const drawHeight = 300;
    // 兼容第三个参数传入 "actual/total" 的情况
    let a = actual;
    let t = total;
    if (
      (t === undefined || t === null) &&
      typeof a === "string" &&
      a.includes("/")
    ) {
      const parts = a.split("/");
      a = parts[0];
      t = parts[1] || "";
    }

    return new Promise((resolve, reject) => {
      uni.getImageInfo({
        src: imgUrl,
        success: (res) => {
          const path = res.path || res.tempFilePath || imgUrl;
          if (typeof ctx.clearRect === "function") {
            ctx.clearRect(0, 0, drawWidth, drawHeight);
          }
          ctx.drawImage(path, 0, 0, drawWidth, drawHeight);
          // 绘制左上角日期（白色，22px）
          renderText(ctx, String(date || ""), 18, "#FFFFFF", 6, 20, "left");
          // 居中绘制第三个参数为圆角黑底标签
          const rectW = 200;
          const rectH = 78;
          const radius = 39;
          const rectX = (drawWidth - rectW) / 2;
          const rectY = (drawHeight - rectH) / 2;
          ctx.save();
          ctx.beginPath();
          ctx.moveTo(rectX + radius, rectY);
          ctx.lineTo(rectX + rectW - radius, rectY);
          ctx.quadraticCurveTo(
            rectX + rectW,
            rectY,
            rectX + rectW,
            rectY + radius
          );
          ctx.lineTo(rectX + rectW, rectY + rectH - radius);
          ctx.quadraticCurveTo(
            rectX + rectW,
            rectY + rectH,
            rectX + rectW - radius,
            rectY + rectH
          );
          ctx.lineTo(rectX + radius, rectY + rectH);
          ctx.quadraticCurveTo(
            rectX,
            rectY + rectH,
            rectX,
            rectY + rectH - radius
          );
          ctx.lineTo(rectX, rectY + radius);
          ctx.quadraticCurveTo(rectX, rectY, rectX + radius, rectY);
          ctx.closePath();
          ctx.setFillStyle("rgba(0,0,0,0.5)");
          ctx.fill();
          ctx.restore();

          // 居中排版：左侧显示 actual/，右侧显示 total，再追加“环”
          ctx.save();
          if (typeof ctx.setTextBaseline === "function")
            ctx.setTextBaseline("middle");
          const centerX = rectX + rectW / 2;
          const centerY = rectY + rectH / 2;
          // 左半部：右对齐 actual/
          renderText(ctx, `${a}/`, 40, "#FFFFFF", centerX, centerY, "right");
          // 右半部：左对齐 total
          renderText(
            ctx,
            `${t || ""}`,
            30,
            "#FFFFFF",
            centerX,
            centerY,
            "left"
          );
          // 追加单位“环”：放在 total 文本之后 16px
          const totalWidth = ctx.measureText(`${t || ""}`).width || 0;
          renderText(
            ctx,
            "环",
            20,
            "#FFFFFF",
            centerX + totalWidth + 5,
            centerY,
            "left"
          );
          ctx.restore();
          ctx.draw(false, () => {
            try {
              uni.canvasToTempFilePath({
                canvasId,
                width: drawWidth,
                height: drawHeight,
                destWidth: drawWidth,
                destHeight: drawHeight,
                fileType: "png",
                quality: 1,
                success: (r) => {
                  const path = r.tempFilePath || r.apFilePath || r.filePath;
                  resolve(path);
                },
                fail: (err) => reject(err),
              });
            } catch (err) {
              reject(err);
            }
          });
        },
        fail: () => {
          try {
            ctx.drawImage(imgUrl, 0, 0, drawWidth, drawHeight);
            // 绘制左上角日期（白色，22px）
            renderText(ctx, String(date || ""), 22, "#FFFFFF", 10, 22, "left");
            // 居中绘制第三个参数为圆角黑底标签
            const rectW = 200;
            const rectH = 78;
            const radius = 39;
            const rectX = (drawWidth - rectW) / 2;
            const rectY = (drawHeight - rectH) / 2;
            ctx.save();
            ctx.beginPath();
            ctx.moveTo(rectX + radius, rectY);
            ctx.lineTo(rectX + rectW - radius, rectY);
            ctx.quadraticCurveTo(
              rectX + rectW,
              rectY,
              rectX + rectW,
              rectY + radius
            );
            ctx.lineTo(rectX + rectW, rectY + rectH - radius);
            ctx.quadraticCurveTo(
              rectX + rectW,
              rectY + rectH,
              rectX + rectW - radius,
              rectY + rectH
            );
            ctx.lineTo(rectX + radius, rectY + rectH);
            ctx.quadraticCurveTo(
              rectX,
              rectY + rectH,
              rectX,
              rectY + rectH - radius
            );
            ctx.lineTo(rectX, rectY + radius);
            ctx.quadraticCurveTo(rectX, rectY, rectX + radius, rectY);
            ctx.closePath();
            ctx.setFillStyle("rgba(0,0,0,0.5)");
            ctx.fill();
            ctx.restore();
            // 居中排版：左侧显示 actual/，右侧显示 total，再追加“环”
            ctx.save();
            if (typeof ctx.setTextBaseline === "function")
              ctx.setTextBaseline("middle");
            const centerX = rectX + rectW / 2;
            const centerY = rectY + rectH / 2;
            // 左半部：右对齐 actual/
            renderText(ctx, `${a}/`, 40, "#FFFFFF", centerX, centerY, "right");
            // 右半部：左对齐 total
            renderText(
              ctx,
              `${t || ""}`,
              35,
              "#FFFFFF",
              centerX,
              centerY,
              "left"
            );
            // 追加单位“环”：放在 total 文本之后 16px
            const totalWidth = ctx.measureText(`${t || ""}`).width || 0;
            renderText(
              ctx,
              "环",
              20,
              "#FFFFFF",
              centerX + totalWidth + 5,
              centerY,
              "left"
            );
            ctx.restore();
            ctx.draw(false, () => {
              try {
                uni.canvasToTempFilePath({
                  canvasId,
                  width: drawWidth,
                  height: drawHeight,
                  destWidth: drawWidth,
                  destHeight: drawHeight,
                  fileType: "png",
                  quality: 1,
                  success: (r) => {
                    const path = r.tempFilePath || r.apFilePath || r.filePath;
                    resolve(path);
                  },
                  fail: (err) => reject(err),
                });
              } catch (err) {
                reject(err);
              }
            });
          } catch (e) {
            reject(e);
          }
        },
      });
    });
  } catch (e) {
    console.error("generateShareCardImage 绘制失败:", e);
  }
};