First commit

.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "daily"

.github/workflows/tests.yml

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+on: [push, pull_request]
+name: tests
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        go-version: [1.x, 1.14.x]
+        platform: [ubuntu-latest]
+    runs-on: ${{ matrix.platform }}
+
+    steps:
+    - uses: actions/setup-go@v2
+      with:
+        go-version: ${{ matrix.go-version }}
+    - uses: actions/checkout@v2
+
+    - name: Cache go modules
+      uses: actions/cache@v2
+      with:
+        path: ~/go/pkg/mod
+        key: ${{ runner.os }}-go-${{ hashFiles('go.sum') }}
+        restore-keys: ${{ runner.os }}-go-
+
+    - name: Run go test
+      run: go test -v -race -coverprofile coverage.txt -covermode atomic ./...
+
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v1

.gitignore

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+.idea

CODE_OF_CONDUCT.md

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+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal
+appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+ advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+ address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+ professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at [email protected]. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see
+https://www.contributor-covenant.org/faq

LICENSE

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+Copyright (c) 2021 Jonnas Fonini
+
+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.

README.md

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+# go-pix #
+
+[![GoDoc](https://img.shields.io/static/v1?label=godoc&message=reference&color=blue)](https://pkg.go.dev/github.com/fonini/go-pix/pix)
+[![Test Status](https://github.com/fonini/go-pix/workflows/tests/badge.svg)](https://github.com/fonini/go-pix/actions?query=workflow%3Atests)
+[![codecov](https://codecov.io/gh/fonini/go-pix/branch/master/graph/badge.svg?token=FB25JPH4ED)](https://codecov.io/gh/fonini/go-pix)
+[![Go Report Card](https://goreportcard.com/badge/github.com/fonini/go-pix)](https://goreportcard.com/report/github.com/fonini/go-pix)
+
+go-pix is a Go library for generating [Pix](https://www.bcb.gov.br/estabilidadefinanceira/pix) transactions using Copy and Paste or QR codes.
+
+## About Pix ##
+
+![Generated QR code](pix.png?raw=true)
+
+Pix is a system created by the Brazilian Central Bank to allow instant payments. The new payment method allows immediate money transfer, 24 hours a day, 7 days a week, including weekends and holidays.
+
+The address key is a way to identify the user’s account. There are four types of address keys that users can use:
+
+* CPF/CNPJ
+* Email address
+* Cellphone number
+* Random key – a set of random number, letters, and symbols
+
+This key binds the basic information to the user’s complete account information, allowing users to send and receive money using only an address key.
+
+## Usage ##
+
+```go
+import "github.com/fonini/go-pix/pix"
+```
+
+### Generating a Copy and Paste code
+
+```go
+options := pix.Options{
+    Name: "Jonnas Fonini",
+    Key: "[email protected]",
+    City: "Marau",
+    Amount: 20.67,
+    Description: "Invoice #4",
+}
+
+copyPaste, err := pix.Pix(options)
+
+if err != nil {
+	panic(err)
+}
+
+fmt.Println(copyPaste) // will output: "00020126580014BR.GOV.BCB.PIX0122jonnasfonini@gmail.com0210Invoice #4520400005303986540520.675802BR5913Jonnas Fonini6005Marau62410503***50300017BR.GOV.BCB.BRCODE01051.0.06304CF13"
+```
+
+### Generating a QR code
+
+You can use the Copy and Paste code generated above to generate a QR code
+
+```go
+options := QRCodeOptions{Size: 256, Content: copyPaste}
+
+qrCode, err := pix.QRCode(options)
+
+if err != nil {
+	panic(err)
+}
+```
+
+The ```qrCode``` is a byte array, containing a graphical representation of the Copy and Paste code in the form of a QR code.
+
+![Generated QR code](qr.png?raw=true)
+
+## Tests ##
+
+```
+go test ./pix
+```

go.mod

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+module github.com/fonini/go-pix
+
+go 1.16
+
+require (
+	github.com/google/go-cmp v0.5.4
+	github.com/r10r/crc16 v0.1.1
+	github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e
+)

go.sum

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+github.com/google/go-cmp v0.5.4 h1:L8R9j+yAqZuZjsqh/z+F1NCffTKKLShY6zXTItVIZ8M=
+github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/r10r/crc16 v0.1.1 h1:BsuCL6d+j0hBCQ/nNnwHmlTF0shVES2IagUgh1MS6yU=
+github.com/r10r/crc16 v0.1.1/go.mod h1:I17p13f8bQGzqw5+futttVdERhbvzpgjlPZdwIJ0ka8=
+github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e h1:MRM5ITcdelLK2j1vwZ3Je0FKVCfqOLp5zO6trqMLYs0=
+github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e/go.mod h1:XV66xRDqSt+GTGFMVlhk3ULuV0y9ZmzeVGR4mloJI3M=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=