From 68779bdb102e01a3e302ff9d0aa3eb4356d0c1cd Mon Sep 17 00:00:00 2001
From: awesomeYG <993631441@qq.com>
Date: Sun, 18 Feb 2024 18:32:19 +0800
Subject: [PATCH] fix: caesar pwd

---
 src/components/MainContent/index.tsx |   2 +
 src/pages/caesar.tsx                 | 159 +++++++++++++++++++++++++++
 src/utils/tools.ts                   |   8 ++
 3 files changed, 169 insertions(+)
 create mode 100644 src/pages/caesar.tsx

diff --git a/src/components/MainContent/index.tsx b/src/components/MainContent/index.tsx
index 9a9adb5..17a5694 100644
--- a/src/components/MainContent/index.tsx
+++ b/src/components/MainContent/index.tsx
@@ -147,6 +147,7 @@ const MainContent: React.FC<{
         direction='row'
         alignItems='center'
         justifyContent='space-between'
+        spacing={1}
         sx={{
           position: 'relative',
           width: '100%',
@@ -175,6 +176,7 @@ const MainContent: React.FC<{
             sx={{
               borderRadius: '4px',
               height: '24px',
+              minWidth: '80px',
             }}
             variant='outlined'
             startIcon={<FullscreenIcon />}
diff --git a/src/pages/caesar.tsx b/src/pages/caesar.tsx
new file mode 100644
index 0000000..cf2dc08
--- /dev/null
+++ b/src/pages/caesar.tsx
@@ -0,0 +1,159 @@
+import React, { useState } from 'react';
+import { Container, Grid, TextField, Button, Box } from '@mui/material';
+import SendIcon from '@mui/icons-material/Send';
+import TranslateIcon from '@mui/icons-material/Translate';
+import MainContent from '@/components/MainContent';
+import alertActions from '@/components/Alert';
+
+const encode = (text: string, pwdOffest: number) => {
+  if (pwdOffest >= 26) pwdOffest = pwdOffest % 26;
+  return Array.from(text)
+    .map((item) => {
+      const count = item.charCodeAt(0);
+      if ((count >= 97 && count <= 122) || (count >= 65 && count <= 90)) {
+        if (
+          count + pwdOffest > 122 ||
+          (count <= 90 && count + pwdOffest > 90)
+        ) {
+          return String.fromCharCode(count + pwdOffest - 26);
+        }
+        return String.fromCharCode(count + pwdOffest);
+      }
+      return item;
+    })
+    .join('');
+};
+const decode = (pwd: string, pwdOffest: number) => {
+  if (pwdOffest > 25) pwdOffest = pwdOffest % 25;
+  return Array.from(pwd)
+    .map((item) => {
+      const count = item.charCodeAt(0);
+      if ((count >= 97 && count <= 122) || (count >= 65 && count <= 90)) {
+        if (count - pwdOffest < 65 || (count >= 97 && count - pwdOffest < 97)) {
+          return String.fromCharCode(count - pwdOffest + 26);
+        }
+        return String.fromCharCode(count - pwdOffest);
+      }
+      return item;
+    })
+    .join('');
+};
+const CaesarCodeTranslator = () => {
+  const [text, setText] = useState('');
+  const [pwd, setPwd] = useState('');
+  const [pwdOffest, setPwdOffest] = useState(3);
+
+  const onTextChange = (event: React.ChangeEvent<HTMLInputElement>) => {
+    setText(event.target.value);
+  };
+
+  const onPwdChange = (event: React.ChangeEvent<HTMLInputElement>) => {
+    setPwd(event.target.value);
+  };
+
+  const encodeToMorse = () => {
+    try {
+      const encoded = encode(text, pwdOffest);
+      setPwd(encoded);
+    } catch (error) {
+      const err = error as Error;
+      console.log(err);
+      alertActions.error('加密失败！');
+    }
+  };
+
+  const decodeFromMorse = () => {
+    try {
+      const decoded = decode(pwd, pwdOffest);
+      setText(decoded);
+    } catch (error) {
+      const err = error as Error;
+      console.log(err);
+      alertActions.error('解密失败！');
+    }
+  };
+
+  return (
+    <MainContent>
+      <>
+        <TextField
+          fullWidth
+          label='密码位移数'
+          placeholder='请输入密码位移的数值'
+          value={pwdOffest}
+          type='number'
+          onChange={(e) => {
+            setPwdOffest(e.target.value as any);
+          }}
+          inputProps={{
+            style: { fontFamily: 'monospace' },
+          }}
+          sx={{ width: '200px', ml: 'auto' }}
+        />
+        <Container maxWidth='lg'>
+          <Box sx={{ my: 4 }}>
+            <Grid container spacing={2} alignItems='center'>
+              <Grid item xs={12} md={5}>
+                <TextField
+                  fullWidth
+                  label='文本'
+                  placeholder='请输入要加密的文本'
+                  value={text}
+                  onChange={onTextChange}
+                  variant='outlined'
+                  multiline
+                  rows={10}
+                  inputProps={{
+                    style: { fontFamily: 'monospace' },
+                  }}
+                />
+              </Grid>
+              <Grid
+                item
+                xs={12}
+                md={2}
+                container
+                direction='column'
+                alignItems='center'
+                justifyContent='space-around'
+              >
+                <Button
+                  variant='contained'
+                  onClick={encodeToMorse}
+                  startIcon={<SendIcon />}
+                  sx={{ mb: 2 }}
+                >
+                  加密
+                </Button>
+                <Button
+                  variant='contained'
+                  onClick={decodeFromMorse}
+                  startIcon={<TranslateIcon />}
+                >
+                  解密
+                </Button>
+              </Grid>
+              <Grid item xs={12} md={5}>
+                <TextField
+                  fullWidth
+                  label='凯撒密码'
+                  placeholder='请输入要解密的凯撒密码'
+                  value={pwd}
+                  onChange={onPwdChange}
+                  variant='outlined'
+                  multiline
+                  rows={10}
+                  inputProps={{
+                    style: { fontFamily: 'monospace' },
+                  }}
+                />
+              </Grid>
+            </Grid>
+          </Box>
+        </Container>
+      </>
+    </MainContent>
+  );
+};
+
+export default CaesarCodeTranslator;
diff --git a/src/utils/tools.ts b/src/utils/tools.ts
index 36765e1..fefc5b3 100644
--- a/src/utils/tools.ts
+++ b/src/utils/tools.ts
@@ -598,4 +598,12 @@ export const allTools: Tool[] = [
     key: [],
     subTitle: '乱序文字生成器可以打乱文字和段落顺序，保持数量和出现次数不变。',
   },
+  {
+    label: '凯撒密码在线加密解密',
+    tags: [Tags.SECURITY],
+    path: '/caesar',
+    key: [],
+    subTitle:
+      '凯撒密码最早由古罗马军事统帅盖乌斯·尤利乌斯·凯撒在军队中用来传递加密信息，故称凯撒密码。此为一种位移加密手段，只对26个（大小写）字母进行位移加密，规则相当简单，容易被破解',
+  },
 ];