# 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_CACHE_SIZE=4"
  - make test QUIET=1 CFLAGS+="-DLFS_READ_SIZE=512    -DLFS_CACHE_SIZE=512 -DLFS_BLOCK_CYCLES=16"
  - make test QUIET=1 CFLAGS+="-DLFS_BLOCK_COUNT=1023 -DLFS_LOOKAHEAD_SIZE=256"

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

  # additional configurations that don't support all tests (this should be
  # fixed but at the moment it is what it is)
  - make test_files QUIET=1
        CFLAGS+="-DLFS_READ_SIZE=1 -DLFS_BLOCK_SIZE=4096"
  - make test_files QUIET=1
        CFLAGS+="-DLFS_READ_SIZE=\(2*1024\) -DLFS_BLOCK_SIZE=\(64*1024\)"
  - make test_files QUIET=1
        CFLAGS+="-DLFS_READ_SIZE=\(8*1024\) -DLFS_BLOCK_SIZE=\(64*1024\)"
  - make test_files QUIET=1
        CFLAGS+="-DLFS_READ_SIZE=11 -DLFS_BLOCK_SIZE=704"

  # compile and find the code size with the smallest configuration
  - make clean size
        OBJ="$(ls lfs*.o | tr '\n' ' ')"
        CFLAGS+="-DLFS_NO_ASSERT -DLFS_NO_DEBUG -DLFS_NO_WARN -DLFS_NO_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
              libc6-dev-armel-cross
              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
              libc6-dev-powerpc-cross
              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 apt-get install
              gcc-mips-linux-gnu
              libc6-dev-mips-cross
              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
      if: branch !~ -prefix$
      install:
        - sudo apt-get install libfuse-dev
        - git clone --depth 1 https://github.com/geky/littlefs-fuse -b v2
        - 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=4096 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
        - stat .
        - ls -flh
        - make -B test_dirs test_files QUIET=1

    # self-host with littlefs-fuse for fuzz test
    - stage: test
      env:
        - STAGE=test
        - NAME=littlefs-migration
      if: branch !~ -prefix$
      install:
        - sudo apt-get install libfuse-dev
        - git clone --depth 1 https://github.com/geky/littlefs-fuse -b v2 v2
        - git clone --depth 1 https://github.com/geky/littlefs-fuse -b v1 v1
        - fusermount -V
        - gcc --version
      before_script:
        # setup disk for littlefs-fuse
        - rm -rf v2/littlefs/*
        - cp -r $(git ls-tree --name-only HEAD) v2/littlefs

        - mkdir mount
        - sudo chmod a+rw /dev/loop0
        - dd if=/dev/zero bs=512 count=4096 of=disk
        - losetup /dev/loop0 disk
      script:
        # compile v1 and v2
        - make -C v1
        - make -C v2

        # run self-host test with v1
        - v1/lfs --format /dev/loop0
        - v1/lfs /dev/loop0 mount

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

        # attempt to migrate
        - cd ../..
        - fusermount -u mount

        - v2/lfs --migrate /dev/loop0
        - v2/lfs /dev/loop0 mount

        # run self-host test with v2 right where we left off
        - ls mount
        - cd mount/littlefs
        - stat .
        - ls -flh
        - make -B test_dirs test_files QUIET=1

    # Automatically create releases
    - stage: deploy
      env:
        - STAGE=deploy
        - NAME=deploy
      script:
        - |
          bash << 'SCRIPT'
          set -ev
          # Find 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 & ($LFS_VERSION >>  0)))
          # Grab latests patch from repo tags, default to 0, needs finagling
          # to get past github's pagination api
          PREV_URL=https://api.github.com/repos/$TRAVIS_REPO_SLUG/git/refs/tags/v$LFS_VERSION_MAJOR.$LFS_VERSION_MINOR.
          PREV_URL=$(curl -u "$GEKY_BOT_RELEASES" "$PREV_URL" -I \
              | sed -n '/^Link/{s/.*<\(.*\)>; rel="last"/\1/;p;q0};$q1' \
              || echo $PREV_URL)
          LFS_VERSION_PATCH=$(curl -u "$GEKY_BOT_RELEASES" "$PREV_URL" \
              | jq 'map(.ref | match("\\bv.*\\..*\\.(.*)$";"g")
                  .captures[].string | tonumber) | max + 1' \
              || echo 0)
          # We have our new version
          LFS_VERSION="v$LFS_VERSION_MAJOR.$LFS_VERSION_MINOR.$LFS_VERSION_PATCH"
          echo "VERSION $LFS_VERSION"
          # Check that we're the most recent commit
          CURRENT_COMMIT=$(curl -f -u "$GEKY_BOT_RELEASES" \
              https://api.github.com/repos/$TRAVIS_REPO_SLUG/commits/master \
              | jq -re '.sha')
          [ "$TRAVIS_COMMIT" == "$CURRENT_COMMIT" ] || exit 0
          # Create major branch
          git branch v$LFS_VERSION_MAJOR HEAD
          # Create major prefix branch
          git config user.name "geky bot"
          git config user.email "bot@geky.net"
          git fetch https://github.com/$TRAVIS_REPO_SLUG.git \
              --depth=50 v$LFS_VERSION_MAJOR-prefix || true
          ./scripts/prefix.py lfs$LFS_VERSION_MAJOR
          git branch v$LFS_VERSION_MAJOR-prefix $( \
              git commit-tree $(git write-tree) \
                  $(git rev-parse --verify -q FETCH_HEAD | sed -e 's/^/-p /') \
                  -p HEAD \
                  -m "Generated v$LFS_VERSION_MAJOR prefixes")
          git reset --hard
          # Update major version branches (vN and vN-prefix)
          git push --atomic https://$GEKY_BOT_RELEASES@github.com/$TRAVIS_REPO_SLUG.git \
              v$LFS_VERSION_MAJOR \
              v$LFS_VERSION_MAJOR-prefix
          # Build release notes
          PREV=$(git tag --sort=-v:refname -l "v*" | head -1)
          if [ ! -z "$PREV" ]
          then
              echo "PREV $PREV"
              CHANGES=$(git log --oneline $PREV.. --grep='^Merge' --invert-grep)
              printf "CHANGES\n%s\n\n" "$CHANGES"
          fi
          case ${GEKY_BOT_DRAFT:-minor} in
              true)  DRAFT=true ;;
              minor) DRAFT=$(jq -R 'endswith(".0")' <<< "$LFS_VERSION") ;;
              false) DRAFT=false ;;
          esac
          # Create the release and patch version tag (vN.N.N)
          curl -f -u "$GEKY_BOT_RELEASES" -X POST \
              https://api.github.com/repos/$TRAVIS_REPO_SLUG/releases \
              -d "{
                  \"tag_name\": \"$LFS_VERSION\",
                  \"name\": \"${LFS_VERSION%.0}\",
                  \"target_commitish\": \"$TRAVIS_COMMIT\",
                  \"draft\": $DRAFT,
                  \"body\": $(jq -sR '.' <<< "$CHANGES")
              }" #"
          SCRIPT

# 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