From bb4d101ae150a8167383a07c3dc822065536556e Mon Sep 17 00:00:00 2001
From: arthur-brigatto <103693830+arthur-brigatto@users.noreply.github.com>
Date: Wed, 27 Dec 2023 16:34:24 -0300
Subject: [PATCH] Add files via upload

---
 LICENSE              | 21 +++++++++++++++++++++
 Project.toml         | 13 +++++++++++++
 README.md            | 14 ++++++++++++++
 docs/Project.toml    |  3 +++
 docs/make.jl         | 25 +++++++++++++++++++++++++
 docs/src/index.md    | 14 ++++++++++++++
 src/SeasonalNaive.jl |  7 +++++++
 src/forecast.jl      | 11 +++++++++++
 test/runtests.jl     | 20 ++++++++++++++++++++
 9 files changed, 128 insertions(+)
 create mode 100644 LICENSE
 create mode 100644 Project.toml
 create mode 100644 README.md
 create mode 100644 docs/Project.toml
 create mode 100644 docs/make.jl
 create mode 100644 docs/src/index.md
 create mode 100644 src/SeasonalNaive.jl
 create mode 100644 src/forecast.jl
 create mode 100644 test/runtests.jl

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..18791dd
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2023 Arthur Brigatto <arthur.brigatto@gmail.com> and contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/Project.toml b/Project.toml
new file mode 100644
index 0000000..18e2621
--- /dev/null
+++ b/Project.toml
@@ -0,0 +1,13 @@
+name = "SeasonalNaive"
+uuid = "4e5a55a7-a1e0-4c7c-8281-8d51e13076a6"
+authors = ["Arthur Brigatto <arthur.brigatto@gmail.com> and contributors"]
+version = "1.0.0-DEV"
+
+[compat]
+julia = "1"
+
+[extras]
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[targets]
+test = ["Test"]
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..9e050bb
--- /dev/null
+++ b/README.md
@@ -0,0 +1,14 @@
+# SeasonalNaive
+
+[![Stable](https://img.shields.io/badge/docs-stable-blue.svg)](https://arthur-brigatto.github.io/SeasonalNaive.jl/stable/)
+[![Dev](https://img.shields.io/badge/docs-dev-blue.svg)](https://arthur-brigatto.github.io/SeasonalNaive.jl/dev/)
+[![Build Status](https://github.com/arthur-brigatto/SeasonalNaive.jl/actions/workflows/CI.yml/badge.svg?branch=master)](https://github.com/arthur-brigatto/SeasonalNaive.jl/actions/workflows/CI.yml?query=branch%3Amaster)
+[![Coverage](https://codecov.io/gh/arthur-brigatto/SeasonalNaive.jl/branch/master/graph/badge.svg)](https://codecov.io/gh/arthur-brigatto/SeasonalNaive.jl)
+
+A Julia package to forecast time series using the seasonal naïve model. 
+
+Forecasts are done using the following equation:
+
+$`\hat{y}_{T+k} = y_{T+k-m*(\lfloor \frac{k+1}{m}\rfloor + 1)}`$
+
+where $m$ is the seasonal period.
diff --git a/docs/Project.toml b/docs/Project.toml
new file mode 100644
index 0000000..27a7a55
--- /dev/null
+++ b/docs/Project.toml
@@ -0,0 +1,3 @@
+[deps]
+Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
+SeasonalNaive = "4e5a55a7-a1e0-4c7c-8281-8d51e13076a6"
diff --git a/docs/make.jl b/docs/make.jl
new file mode 100644
index 0000000..33a245a
--- /dev/null
+++ b/docs/make.jl
@@ -0,0 +1,25 @@
+using SeasonalNaive
+using Documenter
+
+DocMeta.setdocmeta!(SeasonalNaive, :DocTestSetup, :(using SeasonalNaive); recursive=true)
+
+makedocs(;
+    modules=[SeasonalNaive],
+    authors="Arthur Brigatto <arthur.brigatto@gmail.com> and contributors",
+    repo="https://github.com/arthur-brigatto/SeasonalNaive.jl/blob/{commit}{path}#{line}",
+    sitename="SeasonalNaive.jl",
+    format=Documenter.HTML(;
+        prettyurls=get(ENV, "CI", "false") == "true",
+        canonical="https://arthur-brigatto.github.io/SeasonalNaive.jl",
+        edit_link="master",
+        assets=String[],
+    ),
+    pages=[
+        "Home" => "index.md",
+    ],
+)
+
+deploydocs(;
+    repo="github.com/arthur-brigatto/SeasonalNaive.jl",
+    devbranch="master",
+)
diff --git a/docs/src/index.md b/docs/src/index.md
new file mode 100644
index 0000000..dc41483
--- /dev/null
+++ b/docs/src/index.md
@@ -0,0 +1,14 @@
+```@meta
+CurrentModule = SeasonalNaive
+```
+
+# SeasonalNaive
+
+Documentation for [SeasonalNaive](https://github.com/arthur-brigatto/SeasonalNaive.jl).
+
+```@index
+```
+
+```@autodocs
+Modules = [SeasonalNaive]
+```
diff --git a/src/SeasonalNaive.jl b/src/SeasonalNaive.jl
new file mode 100644
index 0000000..01d05e1
--- /dev/null
+++ b/src/SeasonalNaive.jl
@@ -0,0 +1,7 @@
+module SeasonalNaive
+
+    include("forecast.jl")
+
+    export forecast
+
+end
diff --git a/src/forecast.jl b/src/forecast.jl
new file mode 100644
index 0000000..4f30a56
--- /dev/null
+++ b/src/forecast.jl
@@ -0,0 +1,11 @@
+function forecast(past_data::Vector{Float64}, seasonality::Int64, steps_ahead::Int64)
+    
+    forecasts = zeros(steps_ahead)::Vector{Float64}
+    for k in 1:steps_ahead
+        forecast = past_data[Int(end + k - seasonality*(floor((k - 1)/seasonality)+1))]
+        forecasts[k] = forecast
+    end
+
+    return forecasts
+
+end
\ No newline at end of file
diff --git a/test/runtests.jl b/test/runtests.jl
new file mode 100644
index 0000000..0c23f49
--- /dev/null
+++ b/test/runtests.jl
@@ -0,0 +1,20 @@
+using SeasonalNaive
+using Test
+
+@testset "SeasonalNaive.jl" begin
+    @testset "forecast season 120" begin
+        past_data = rand(120)
+        forecasted = forecast(past_data, 120, 120)
+        @test past_data == forecasted
+    end
+    @testset "forecast season 12" begin
+        past_data = rand(60)
+        forecasted = forecast(past_data, 12, 12)
+        @test past_data[end-11: end] == forecasted
+    end
+    @testset "forecast season 13" begin
+        past_data = rand(60)
+        forecasted = forecast(past_data, 13, 26)
+        @test [past_data[end-12: end]; past_data[end-12: end]] == forecasted
+    end
+end