src/api/users.ts

@@ -0,0 +1,10 @@
+import { apiClient } from '@/api/client'
+import { extractErrorMessage } from '@/api/http'
+import type { ChangePasswordPayload } from '@/types/auth'
+
+export async function changePasswordApi(payload: ChangePasswordPayload): Promise<void> {
+  const response = await apiClient.post('/users/password', payload)
+  if (!response.ok) {
+    throw new Error(await extractErrorMessage(response, 'Failed to change password'))
+  }
+}

src/components/ChangePasswordModal.vue

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+<script setup lang="ts">
+import { ref, onMounted, nextTick } from 'vue'
+import { changePasswordApi } from '@/api/users'
+import { useEscapeKey } from '@/composables/useEscapeKey'
+
+const emit = defineEmits<{
+  close: []
+}>()
+
+const passwordInput = ref<HTMLInputElement | null>(null)
+const currentPassword = ref('')
+const newPassword = ref('')
+const confirmPassword = ref('')
+const isSubmitting = ref(false)
+const error = ref('')
+const successMessage = ref('')
+
+useEscapeKey(handleClose)
+
+onMounted(() => {
+  nextTick(() => {
+    passwordInput.value?.focus()
+  })
+})
+
+function handleClose() {
+  emit('close')
+}
+
+async function handleSubmit() {
+  error.value = ''
+  successMessage.value = ''
+
+  if (newPassword.value.length < 8) {
+    error.value = 'New password must be at least 8 characters.'
+    return
+  }
+  if (newPassword.value !== confirmPassword.value) {
+    error.value = 'New passwords do not match.'
+    return
+  }
+
+  isSubmitting.value = true
+  try {
+    await changePasswordApi({
+      old_password: currentPassword.value,
+      new_password: newPassword.value,
+    })
+    currentPassword.value = ''
+    newPassword.value = ''
+    confirmPassword.value = ''
+    successMessage.value = 'Password changed successfully.'
+  } catch (err) {
+    error.value = err instanceof Error ? err.message : 'Failed to change password'
+  } finally {
+    isSubmitting.value = false
+  }
+}
+</script>
+
+<template>
+  <div class="modal-overlay" @click.self="handleClose">
+    <div
+      class="modal-card card"
+      role="dialog"
+      aria-modal="true"
+      aria-labelledby="change-password-modal-title"
+    >
+      <div class="modal-header">
+        <h3 id="change-password-modal-title">Change password</h3>
+        <button type="button" class="close-btn" aria-label="Close modal" @click="handleClose">
+          ✕
+        </button>
+      </div>
+
+      <p class="modal-description">Enter your current password and choose a new one.</p>
+
+      <form class="password-form" @submit.prevent="handleSubmit">
+        <div class="field">
+          <input
+            ref="passwordInput"
+            v-model="currentPassword"
+            type="password"
+            placeholder="Current password"
+            autocomplete="current-password"
+            :disabled="isSubmitting"
+          />
+        </div>
+        <div class="field">
+          <input
+            v-model="newPassword"
+            type="password"
+            placeholder="New password"
+            autocomplete="new-password"
+            :disabled="isSubmitting"
+          />
+        </div>
+        <div class="field">
+          <input
+            v-model="confirmPassword"
+            type="password"
+            placeholder="Confirm new password"
+            autocomplete="new-password"
+            :disabled="isSubmitting"
+          />
+        </div>
+        <button
+          type="submit"
+          class="btn btn-primary"
+          :disabled="isSubmitting || !currentPassword || !newPassword || !confirmPassword"
+        >
+          Change password
+        </button>
+      </form>
+
+      <p v-if="error" class="banner banner-error">{{ error }}</p>
+      <p v-if="successMessage" class="banner banner-success">{{ successMessage }}</p>
+
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" @click="handleClose">Done</button>
+      </div>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.modal-overlay {
+  position: fixed;
+  inset: 0;
+  background-color: rgba(0, 0, 0, 0.65);
+  backdrop-filter: blur(4px);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 1rem;
+  z-index: 100;
+  animation: fadeIn 0.15s ease-out;
+}
+
+.modal-card {
+  width: 100%;
+  max-width: 440px;
+  background-color: var(--c-bg-soft);
+  border: 1px solid var(--c-border-hover);
+  border-radius: var(--radius-lg);
+  padding: 1.25rem 1.4rem;
+  box-shadow: var(--shadow-md);
+  animation: slideUp 0.15s ease-out;
+}
+
+.modal-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 0.5rem;
+}
+
+.modal-header h3 {
+  font-size: 1.1rem;
+  margin: 0;
+}
+
+.close-btn {
+  background: none;
+  border: none;
+  color: var(--c-text-soft);
+  font-size: 1.1rem;
+  cursor: pointer;
+  padding: 0.2rem 0.4rem;
+  border-radius: var(--radius-sm);
+  line-height: 1;
+}
+
+.close-btn:hover {
+  color: var(--c-heading);
+}
+
+.modal-description {
+  font-size: 0.85rem;
+  color: var(--c-text-soft);
+  margin-bottom: 1rem;
+}
+
+.password-form {
+  display: flex;
+  flex-direction: column;
+  gap: 0.6rem;
+  margin-bottom: 1rem;
+}
+
+.password-form .btn {
+  padding: 0.65rem 1.2rem;
+}
+
+.modal-footer {
+  display: flex;
+  justify-content: flex-end;
+  margin-top: 1rem;
+}
+
+.modal-footer .btn {
+  width: auto;
+  padding: 0.5rem 1.2rem;
+}
+
+.banner-success {
+  background-color: rgba(52, 211, 153, 0.12);
+  border: 1px solid rgba(52, 211, 153, 0.4);
+  color: var(--c-success);
+  margin-top: 0.75rem;
+}
+
+.banner-error {
+  margin-top: 0.75rem;
+}
+
+@keyframes fadeIn {
+  from {
+    opacity: 0;
+  }
+  to {
+    opacity: 1;
+  }
+}
+
+@keyframes slideUp {
+  from {
+    opacity: 0;
+    transform: translateY(8px) scale(0.98);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0) scale(1);
+  }
+}
+</style>

src/utils/jwt.ts

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+export function decodeJwtPayload<T>(token: string): T | null {
+  const parts = token.split('.')
+  if (parts.length !== 3) return null
+
+  try {
+    const base64 = parts[1]!.replace(/-/g, '+').replace(/_/g, '/')
+    const json = decodeURIComponent(
+      atob(base64)
+        .split('')
+        .map((c) => '%' + c.charCodeAt(0).toString(16).padStart(2, '0'))
+        .join(''),
+    )
+    return JSON.parse(json) as T
+  } catch {
+    return null
+  }
+}