import { describe, expect, it } from "vitest"

import {
  buildUnifiedUpdateSchema,
  type UnifiedSchemaCopy,
} from "@/schemas/user.schema"

const enCopy: UnifiedSchemaCopy = {
  firstNameRequired: "First name is required",
  lastNameRequired: "Last name is required",
  departmentRequired: "Department is required",
  emailInvalid: "Invalid email",
  passwordMinLength: "Password must be at least 8 characters",
  nameRequired: "Name is required",
  userIdRequired: "User id is required",
  idRequired: "ID is required",
  userIdInvalid: "User ID must be a valid UUID",
}

const esCopy: UnifiedSchemaCopy = {
  firstNameRequired: "El nombre es obligatorio",
  lastNameRequired: "El apellido es obligatorio",
  departmentRequired: "El departamento es obligatorio",
  emailInvalid: "Correo electrónico no válido",
  passwordMinLength: "La contraseña debe tener al menos 8 caracteres",
  nameRequired: "El nombre es obligatorio",
  userIdRequired: "El ID de usuario es obligatorio",
  idRequired: "El ID es obligatorio",
  userIdInvalid: "El ID de usuario debe ser un UUID válido",
}

const validPersonOnly = {
  id: "person-1",
  firstName: "John",
  lastName: "Doe",
  department: "IT",
  email: "john@example.test",
  phone: null,
}

const validPersonWithUser = {
  ...validPersonOnly,
  role: "ADMIN" as const,
  isActive: true,
}

describe("buildUnifiedUpdateSchema", () => {
  describe("person-only update (no user fields provided)", () => {
    it("accepts person fields without role/isActive/password when person has no User", () => {
      const schema = buildUnifiedUpdateSchema(enCopy)
      const result = schema.safeParse(validPersonOnly)

      expect(result.success).toBe(true)
      if (result.success) {
        expect(result.data.id).toBe("person-1")
        expect(result.data.firstName).toBe("John")
        expect(result.data.role).toBeUndefined()
        expect(result.data.isActive).toBeUndefined()
        expect(result.data.password).toBeUndefined()
      }
    })

    it("accepts person fields with isActive=false when person has no User", () => {
      const schema = buildUnifiedUpdateSchema(enCopy)
      const result = schema.safeParse({ ...validPersonOnly, isActive: false })

      expect(result.success).toBe(true)
    })

    it("rejects empty id", () => {
      const schema = buildUnifiedUpdateSchema(enCopy)
      const result = schema.safeParse({
        id: "",
        firstName: "John",
        lastName: "Doe",
        department: "IT",
        email: "john@example.test",
        phone: null,
      })

      expect(result.success).toBe(false)
      if (!result.success) {
        expect(result.error.flatten().fieldErrors.id).toContain(
          enCopy.idRequired,
        )
      }
    })
  })

  describe("person+user update (when person has User linked)", () => {
    it("accepts person and user fields with role and isActive when no password change", () => {
      const schema = buildUnifiedUpdateSchema(enCopy)
      const result = schema.safeParse(validPersonWithUser)

      expect(result.success).toBe(true)
      if (result.success) {
        expect(result.data.role).toBe("ADMIN")
        expect(result.data.isActive).toBe(true)
        expect(result.data.password).toBeUndefined()
      }
    })

    it("accepts password reset (>= 8 chars) when role is provided", () => {
      const schema = buildUnifiedUpdateSchema(enCopy)
      const result = schema.safeParse({
        ...validPersonWithUser,
        password: "newpassword1",
      })

      expect(result.success).toBe(true)
      if (result.success) {
        expect(result.data.password).toBe("newpassword1")
      }
    })

    it("rejects short password when role is provided and password is non-empty", () => {
      const schema = buildUnifiedUpdateSchema(enCopy)
      const result = schema.safeParse({
        ...validPersonWithUser,
        password: "short",
      })

      expect(result.success).toBe(false)
      if (!result.success) {
        expect(result.error.flatten().fieldErrors.password).toContain(
          enCopy.passwordMinLength,
        )
      }
    })

    it("accepts empty password string as 'do not change' (ignored)", () => {
      const schema = buildUnifiedUpdateSchema(enCopy)
      const result = schema.safeParse({
        ...validPersonWithUser,
        password: "",
      })

      expect(result.success).toBe(true)
    })

    it("rejects invalid role enum", () => {
      const schema = buildUnifiedUpdateSchema(enCopy)
      const result = schema.safeParse({
        ...validPersonWithUser,
        role: "SUPER_ADMIN",
      })

      expect(result.success).toBe(false)
    })

    it("rejects NO_USER role on update (cannot remove user from existing person)", () => {
      const schema = buildUnifiedUpdateSchema(enCopy)
      const result = schema.safeParse({
        ...validPersonWithUser,
        role: "NO_USER" as unknown as "ADMIN",
      })

      expect(result.success).toBe(false)
    })

    it("uses localized password error message", () => {
      const schema = buildUnifiedUpdateSchema(esCopy)
      const result = schema.safeParse({
        ...validPersonWithUser,
        password: "corta",
      })

      expect(result.success).toBe(false)
      if (!result.success) {
        expect(result.error.flatten().fieldErrors.password).toContain(
          esCopy.passwordMinLength,
        )
      }
    })
  })

  describe("email validation", () => {
    it("rejects invalid email format", () => {
      const schema = buildUnifiedUpdateSchema(enCopy)
      const result = schema.safeParse({
        ...validPersonOnly,
        email: "not-an-email",
      })

      expect(result.success).toBe(false)
      if (!result.success) {
        expect(result.error.flatten().fieldErrors.email).toContain(
          enCopy.emailInvalid,
        )
      }
    })

    it("accepts null email (person can have no email)", () => {
      const schema = buildUnifiedUpdateSchema(enCopy)
      const result = schema.safeParse({ ...validPersonOnly, email: null })

      expect(result.success).toBe(true)
    })
  })
})