# Environment variables
env:
  global:
    - CFLAGS=-Werror

# Common test script
script:
  # make sure example can at least compile
  - sed -n '/``` c/,/```/{/```/d; p;}' README.md > test.c &&
    make all CFLAGS+="
        -Duser_provided_block_device_read=NULL
        -Duser_provided_block_device_prog=NULL
        -Duser_provided_block_device_erase=NULL
        -Duser_provided_block_device_sync=NULL
        -include stdio.h"

  # run tests
  - make test QUIET=1

  # run tests with a few different configurations
  - make test QUIET=1 CFLAGS+="-DLFS_READ_SIZE=1      -DLFS_PROG_SIZE=1"
  - make test QUIET=1 CFLAGS+="-DLFS_READ_SIZE=512    -DLFS_PROG_SIZE=512"
  - make test QUIET=1 CFLAGS+="-DLFS_BLOCK_COUNT=1023 -DLFS_LOOKAHEAD=2048"

  - make clean test QUIET=1 CFLAGS+="-DLFS_INLINE_MAX=0"
  - make clean test QUIET=1 CFLAGS+="-DLFS_NO_INTRINSICS"

  # compile and find the code size with the smallest configuration
  - make clean size
        OBJ="$(ls lfs*.o | tr '\n' ' ')"
        CFLAGS+="-DLFS_NO{ASSERT,DEBUG,WARN,ERROR}"
        | tee sizes

  # update status if we succeeded, compare with master if possible
  - |
    if [ "$TRAVIS_TEST_RESULT" -eq 0 ]
    then
        CURR=$(tail -n1 sizes | awk '{print $1}')
        PREV=$(curl -u $GEKY_BOT_STATUSES https://api.github.com/repos/$TRAVIS_REPO_SLUG/status/master \
            | jq -re "select(.sha != \"$TRAVIS_COMMIT\")
                | .statuses[] | select(.context == \"$STAGE/$NAME\").description
                | capture(\"code size is (?<size>[0-9]+)\").size" \
            || echo 0)

        STATUS="Passed, code size is ${CURR}B"
        if [ "$PREV" -ne 0 ]
        then
            STATUS="$STATUS ($(python -c "print '%+.2f' % (100*($CURR-$PREV)/$PREV.0)")%)"
        fi
    fi

# CI matrix
jobs:
  include:
    # native testing
    - stage: test
      env:
        - STAGE=test
        - NAME=littlefs-x86

    # cross-compile with ARM (thumb mode)
    - stage: test
      env:
        - STAGE=test
        - NAME=littlefs-arm
        - CC="arm-linux-gnueabi-gcc --static -mthumb"
        - EXEC="qemu-arm"
      install:
        - sudo apt-get install gcc-arm-linux-gnueabi qemu-user
        - arm-linux-gnueabi-gcc --version
        - qemu-arm -version

    # cross-compile with PowerPC
    - stage: test
      env:
        - STAGE=test
        - NAME=littlefs-powerpc
        - CC="powerpc-linux-gnu-gcc --static"
        - EXEC="qemu-ppc"
      install:
        - sudo apt-get install gcc-powerpc-linux-gnu qemu-user
        - powerpc-linux-gnu-gcc --version
        - qemu-ppc -version

    # cross-compile with MIPS
    - stage: test
      env:
        - STAGE=test
        - NAME=littlefs-mips
        - CC="mips-linux-gnu-gcc --static"
        - EXEC="qemu-mips"
      install:
        - sudo add-apt-repository -y "deb http://archive.ubuntu.com/ubuntu/ xenial main universe"
        - sudo apt-get -qq update
        - sudo apt-get install gcc-mips-linux-gnu qemu-user
        - mips-linux-gnu-gcc --version
        - qemu-mips -version

    # self-host with littlefs-fuse for fuzz test
    - stage: test
      env:
        - STAGE=test
        - NAME=littlefs-fuse
      install:
        - sudo apt-get install libfuse-dev
        - git clone --depth 1 https://github.com/geky/littlefs-fuse
        - fusermount -V
        - gcc --version
      before_script:
        # setup disk for littlefs-fuse
        - rm -rf littlefs-fuse/littlefs/*
        - cp -r $(git ls-tree --name-only HEAD) littlefs-fuse/littlefs

        - mkdir mount
        - sudo chmod a+rw /dev/loop0
        - dd if=/dev/zero bs=512 count=2048 of=disk
        - losetup /dev/loop0 disk
      script:
        # self-host test
        - make -C littlefs-fuse

        - littlefs-fuse/lfs --format /dev/loop0
        - littlefs-fuse/lfs /dev/loop0 mount

        - ls mount
        - mkdir mount/littlefs
        - cp -r $(git ls-tree --name-only HEAD) mount/littlefs
        - cd mount/littlefs
        - ls
        - make -B test_dirs test_files QUIET=1

      # Automatically update releases
    - stage: deploy
      env:
        - STAGE=deploy
        - NAME=deploy
      script:
        # Update tag for version defined in lfs.h
        - LFS_VERSION=$(grep -ox '#define LFS_VERSION .*' lfs.h | cut -d ' ' -f3)
        - LFS_VERSION_MAJOR=$((0xffff & ($LFS_VERSION >> 16)))
        - LFS_VERSION_MINOR=$((0xffff & ($LFS_VERSION >>  0)))
        - LFS_VERSION="v$LFS_VERSION_MAJOR.$LFS_VERSION_MINOR"
        - echo "littlefs version $LFS_VERSION"
        - |
          curl -u $GEKY_BOT_RELEASES -X POST \
            https://api.github.com/repos/$TRAVIS_REPO_SLUG/git/refs \
            -d "{
              \"ref\": \"refs/tags/$LFS_VERSION\",
              \"sha\": \"$TRAVIS_COMMIT\"
            }"
        - |
          curl -f -u $GEKY_BOT_RELEASES -X PATCH \
            https://api.github.com/repos/$TRAVIS_REPO_SLUG/git/refs/tags/$LFS_VERSION \
            -d "{
              \"sha\": \"$TRAVIS_COMMIT\"
            }"
        # Create release notes from commits
        - LFS_PREV_VERSION="v$LFS_VERSION_MAJOR.$(($LFS_VERSION_MINOR-1))"
        - |
          if [ $(git tag -l "$LFS_PREV_VERSION") ]
          then
            curl -u $GEKY_BOT_RELEASES -X POST \
                https://api.github.com/repos/$TRAVIS_REPO_SLUG/releases \
                -d "{
                    \"tag_name\": \"$LFS_VERSION\",
                    \"name\": \"$LFS_VERSION\"
                }"
            RELEASE=$(
                curl -f -u $GEKY_BOT_RELEASES \
                    https://api.github.com/repos/$TRAVIS_REPO_SLUG/releases/tags/$LFS_VERSION
            )
            CHANGES=$(
                git log --oneline $LFS_PREV_VERSION.. --grep='^Merge' --invert-grep
            )
            curl -f -u $GEKY_BOT_RELEASES -X PATCH \
                https://api.github.com/repos/$TRAVIS_REPO_SLUG/releases/$(
                    jq -r '.id' <<< "$RELEASE"
                ) \
                -d "$(
                    jq -s '{
                        "body": ((.[0] // "" | sub("(?<=\n)#+ Changes.*"; ""; "mi"))
                            + "### Changes\n\n" + .[1])
                    }' <(jq '.body' <<< "$RELEASE") <(jq -sR '.' <<< "$CHANGES")
                )"
          fi

# Manage statuses
before_install:
  - |
    curl -u $GEKY_BOT_STATUSES -X POST \
        https://api.github.com/repos/$TRAVIS_REPO_SLUG/statuses/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
        -d "{
            \"context\": \"$STAGE/$NAME\",
            \"state\": \"pending\",
            \"description\": \"${STATUS:-In progress}\",
            \"target_url\": \"https://travis-ci.org/$TRAVIS_REPO_SLUG/jobs/$TRAVIS_JOB_ID\"
        }"

after_failure:
  - |
    curl -u $GEKY_BOT_STATUSES -X POST \
        https://api.github.com/repos/$TRAVIS_REPO_SLUG/statuses/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
        -d "{
            \"context\": \"$STAGE/$NAME\",
            \"state\": \"failure\",
            \"description\": \"${STATUS:-Failed}\",
            \"target_url\": \"https://travis-ci.org/$TRAVIS_REPO_SLUG/jobs/$TRAVIS_JOB_ID\"
        }"

after_success:
  - |
    curl -u $GEKY_BOT_STATUSES -X POST \
        https://api.github.com/repos/$TRAVIS_REPO_SLUG/statuses/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
        -d "{
            \"context\": \"$STAGE/$NAME\",
            \"state\": \"success\",
            \"description\": \"${STATUS:-Passed}\",
            \"target_url\": \"https://travis-ci.org/$TRAVIS_REPO_SLUG/jobs/$TRAVIS_JOB_ID\"
        }"

# Job control
stages:
    - name: test
    - name: deploy
      if: branch = master AND type = push