var faker = require('../index');

var _name = {

    firstName: function (gender) {
      if (typeof faker.definitions.name.male_first_name !== "undefined" && typeof faker.definitions.name.female_first_name !== "undefined") {
        // some locale datasets ( like ru ) have first_name split by gender. since the name.first_name field does not exist in these datasets,
        // we must randomly pick a name from either gender array so faker.name.firstName will return the correct locale data ( and not fallback )
        gender = (typeof gender === 'number') ? gender : faker.random.number(1);
        if (gender === 0) {
          return faker.random.array_element(faker.locales[faker.locale].name.male_first_name)
        } else {
          return faker.random.array_element(faker.locales[faker.locale].name.female_first_name)
        }
      }
      return faker.random.array_element(faker.definitions.name.first_name)
    },

    lastName: function (gender) {
      if (typeof faker.definitions.name.male_last_name !== "undefined" && typeof faker.definitions.name.female_last_name !== "undefined") {
        // some locale datasets ( like ru ) have last_name split by gender. i have no idea how last names can have genders, but also i do not speak russian
        // see above comment of firstName method
        gender = (typeof gender === 'number') ? gender : faker.random.number(1);
        if (gender === 0) {
          return faker.random.array_element(faker.locales[faker.locale].name.male_last_name);
        } else {
          return faker.random.array_element(faker.locales[faker.locale].name.female_last_name);
        }
      }
      return faker.random.array_element(faker.definitions.name.last_name);
    },

    findName: function (firstName, lastName, gender) {
        var r = faker.random.number(8);
        var prefix, suffix;
        // in particular locales first and last names split by gender,
        // thus we keep consistency by passing 0 as male and 1 as female
        gender = (typeof gender === 'number') ? gender : faker.random.number(1);
        firstName = firstName || faker.name.firstName(gender);
        lastName = lastName || faker.name.lastName(gender);
        switch (r) {
        case 0:
            prefix = faker.name.prefix();
            if (prefix) {
                return prefix + " " + firstName + " " + lastName;
            }
        case 1:
            suffix = faker.name.prefix();
            if (suffix) {
                return firstName + " " + lastName + " " + suffix;
            }
        }

        return firstName + " " + lastName;
    },

    prefix: function () {
        return faker.random.array_element(faker.definitions.name.prefix);
    },

    suffix: function () {
        return faker.random.array_element(faker.definitions.name.suffix);
    },

};

module.exports = _name;