filter mails by property contact alias

src/main/kotlin/com/android/trisolarisserver/controller/InboundEmails.kt

@@ -0,0 +1,59 @@
+package com.android.trisolarisserver.controller
+
+import com.android.trisolarisserver.component.PropertyAccess
+import com.android.trisolarisserver.db.repo.InboundEmailRepo
+import com.android.trisolarisserver.models.property.Role
+import com.android.trisolarisserver.security.MyPrincipal
+import org.springframework.core.io.FileSystemResource
+import org.springframework.http.HttpHeaders
+import org.springframework.http.HttpStatus
+import org.springframework.http.MediaType
+import org.springframework.http.ResponseEntity
+import org.springframework.security.core.annotation.AuthenticationPrincipal
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.PathVariable
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+import org.springframework.web.server.ResponseStatusException
+import java.nio.file.Files
+import java.nio.file.Paths
+import java.util.UUID
+
+@RestController
+@RequestMapping("/properties/{propertyId}/inbound-emails")
+class InboundEmails(
+    private val propertyAccess: PropertyAccess,
+    private val inboundEmailRepo: InboundEmailRepo
+) {
+
+    @GetMapping("/{emailId}/file")
+    fun downloadEmailPdf(
+        @PathVariable propertyId: UUID,
+        @PathVariable emailId: UUID,
+        @AuthenticationPrincipal principal: MyPrincipal?
+    ): ResponseEntity<FileSystemResource> {
+        requirePrincipal(principal)
+        propertyAccess.requireMember(propertyId, principal!!.userId)
+        propertyAccess.requireAnyRole(propertyId, principal.userId, Role.ADMIN, Role.MANAGER)
+
+        val email = inboundEmailRepo.findByIdAndPropertyId(emailId, propertyId)
+            ?: throw ResponseStatusException(HttpStatus.NOT_FOUND, "Email not found")
+        val path = email.rawPdfPath ?: throw ResponseStatusException(HttpStatus.NOT_FOUND, "Email PDF missing")
+        val file = Paths.get(path)
+        if (!Files.exists(file)) {
+            throw ResponseStatusException(HttpStatus.NOT_FOUND, "Email PDF missing")
+        }
+        val resource = FileSystemResource(file)
+        return ResponseEntity.ok()
+            .contentType(MediaType.APPLICATION_PDF)
+            .header(HttpHeaders.CONTENT_DISPOSITION, "inline; filename=\"email-${emailId}.pdf\"")
+            .contentLength(resource.contentLength())
+            .body(resource)
+    }
+
+    private fun requirePrincipal(principal: MyPrincipal?) {
+        if (principal == null) {
+            throw ResponseStatusException(HttpStatus.UNAUTHORIZED, "Missing principal")
+        }
+    }
+}