import joi from "joi";

const nameSchema = joi
  .string()
  .max(50)
  .trim()
  .pattern(new RegExp("^[A-Za-z]+$"))
  .messages({
    "string.empty": "Name is required",
    "string.max": "Name must be less than 50 characters long",
    "string.pattern.base": "Name must contain only letters",
  });

const passwordSchema = joi
  .string()
  .trim()
  .min(8)
  .messages({
    "string.empty": "Password is required",
    "string.min": "Password must be at least 8 characters long",
  })
  .custom((value, helpers) => {
    if (!/[A-Z]/.test(value)) {
      return helpers.message(
        "Password must contain at least one uppercase letter"
      );
    }
    if (!/[a-z]/.test(value)) {
      return helpers.message(
        "Password must contain at least one lowercase letter"
      );
    }
    if (!/\d/.test(value)) {
      return helpers.message("Password must contain at least one number");
    }
    if (!/[!@#$%^&*]/.test(value)) {
      return helpers.message(
        "Password must contain at least one special character"
      );
    }

    return value;
  });

const credentials = joi.object({
  firstname: nameSchema,
  lastname: nameSchema,
  email: joi
    .string()
    .trim()
    .email({ tlds: { allow: false } })
    .messages({
      "string.empty": "Email is required",
      "string.email": "Must be a valid email address",
    }),
  password: passwordSchema,
  newPassword: passwordSchema,
  confirm: joi
    .string()
    .trim()
    .messages({
      "string.empty": "Password confirmation is required",
    })
    .custom((value, helpers) => {
      const { newPassword } = helpers.prefs.context;
      if (value !== newPassword) {
        return helpers.message("Passwords do not match");
      }
      return value;
    }),
  role: joi.string().messages({
    "string.empty": "Role is required",
  }),
});

const registerValidation = joi.object({
  firstname: joi.string().required().messages({
    "string.empty": "First name is required",
  }),

  lastname: joi.string().required().messages({
    "string.empty": "Last name is required",
  }),

  email: joi
    .string()
    .email({ tlds: { allow: false } })
    .required()
    .messages({
      "string.email": "Email must be a valid email",
      "string.empty": "Email is required",
    }),

  password: joi.string().min(8).required().messages({
    "string.min": "Password must be at least 8 characters",
    "string.empty": "Password is required",
  }),
  role: joi.string().required().messages({
    "string.empty": "Role is required",
  }),
});

const loginValidation = joi.object({
  email: joi
    .string()
    .email({ tlds: { allow: false } })
    .required()
    .messages({
      "string.email": "Email must be a valid email",
      "string.empty": "Email is required",
    }),

  password: joi.string().min(8).required().messages({
    "string.min": "Password must be at least 8 characters",
    "string.empty": "Password is required",
  }),
});

const recoveryValidation = joi.object({
  email: joi
    .string()
    .email({ tlds: { allow: false } })
    .required()
    .messages({
      "string.email": "Email must be a valid email",
      "string.empty": "Email is required",
    }),
});

const newPasswordValidation = joi.object({
  password: joi.string().min(8).required().messages({
    "string.min": "Password must be at least 8 characters",
    "string.empty": "Password is required",
  }),
  confirm: joi.string().valid(joi.ref("password")).min(8).required().messages({
    "string.min": "Password must be at least 8 characters",
    "string.empty": "Password is required",
    "any.only": "Passwords do not match",
  }),
});

const editProfileValidation = joi.object({
  firstname: joi.string().trim().pattern(new RegExp("^[A-Za-z]+$")).messages({
    "string.empty": "*First name is required.",
    "string.pattern.base": "*First name must contain only letters.",
  }),
  lastname: joi.string().trim().pattern(new RegExp("^[A-Za-z]+$")).messages({
    "string.empty": "*Last name is required.",
    "string.pattern.base": "*Last name must contain only letters.",
  }),
  email: joi
    .string()
    .trim()
    .email({ tlds: { allow: false } })
    .messages({
      "string.empty": "*Email is required.",
      "string.email": "*Invalid email address.",
    }),
});

const editPasswordValidation = joi.object({
  // TBD - validation for current password ?
  password: passwordSchema,
  newPassword: passwordSchema,
  confirm: joi
    .string()
    .trim()
    .messages({
      "string.empty": "Password confirmation is required",
    })
    .custom((value, helpers) => {
      const { newPassword } = helpers.prefs.context;
      if (value !== newPassword) {
        return helpers.message("*Passwords do not match.");
      }
      return value;
    }),
});

const createMonitorValidation = joi.object({
  url: joi
    .string()
    .trim()
    .messages({ "string.empty": "*This field is required." }),
  name: joi.string().trim().max(50).allow("").messages({
    "string.max": "*This field should not exceed the 50 characters limit.",
  }),
  type: joi
    .string()
    .trim()
    .messages({ "string.empty": "*This field is required." }),
  frequency: joi.number().messages({
    "number.base": "*Frequency must be a number.",
    "any.required": "*Frequency is required.",
  }),
});

const imageValidation = joi.object({
  type: joi.string().valid("image/jpeg", "image/png").messages({
    "any.only": "Invalid file format.",
    "string.empty": "File type required.",
  }),
  size: joi
    .number()
    .max(3 * 1024 * 1024)
    .messages({
      "number.base": "File size must be a number.",
      "number.max": "File size must be less than 3 MB.",
      "number.empty": "File size required.",
    }),
});

export {
  credentials,
  imageValidation,
  createMonitorValidation,
  registerValidation,
  loginValidation,
  recoveryValidation,
  newPasswordValidation,
  editPasswordValidation,
  editProfileValidation,
};