# environment variables
env:
  global:
    - CFLAGS=-Werror
    - MAKEFLAGS=-j

# cache installation dirs
cache:
  pip: true
  directories:
    - $HOME/.cache/apt

# common installation
_: &install-common
  # need toml, also pip3 isn't installed by default?
  - sudo apt-get install python3 python3-pip
  - sudo pip3 install toml
  # setup a ram-backed disk to speed up reentrant tests
  - mkdir disks
  - sudo mount -t tmpfs -o size=100m tmpfs disks
  - export TFLAGS="$TFLAGS --disk=disks/disk"

# test cases
_: &test-example
  # 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"
# default tests
_: &test-default
  # normal+reentrant tests
  - make test TFLAGS+="-nrk"
# common real-life geometries
_: &test-nor
  # NOR flash: read/prog = 1 block = 4KiB
  - make test TFLAGS+="-nrk -DLFS_READ_SIZE=1 -DLFS_BLOCK_SIZE=4096"
_: &test-emmc
  # eMMC: read/prog = 512 block = 512
  - make test TFLAGS+="-nrk -DLFS_READ_SIZE=512 -DLFS_BLOCK_SIZE=512"
_: &test-nand
  # NAND flash: read/prog = 4KiB block = 32KiB
  - make test TFLAGS+="-nrk -DLFS_READ_SIZE=4096 -DLFS_BLOCK_SIZE=\(32*1024\)"
# other extreme geometries that are useful for testing various corner cases
_: &test-no-intrinsics
  - make test TFLAGS+="-nrk -DLFS_NO_INTRINSICS"
_: &test-no-inline
  - make test TFLAGS+="-nrk -DLFS_INLINE_MAX=0"
_: &test-byte-writes
  - make test TFLAGS+="-nrk -DLFS_READ_SIZE=1 -DLFS_CACHE_SIZE=1"
_: &test-block-cycles
  - make test TFLAGS+="-nrk -DLFS_BLOCK_CYCLES=1"
_: &test-odd-block-count
  - make test TFLAGS+="-nrk -DLFS_BLOCK_COUNT=1023 -DLFS_LOOKAHEAD_SIZE=256"
_: &test-odd-block-size
  - make test TFLAGS+="-nrk -DLFS_READ_SIZE=11 -DLFS_BLOCK_SIZE=704"

# report size 
_: &report-size
  # compile and find the code size with the smallest configuration
  - make -j1 clean size
        OBJ="$(ls lfs*.c | sed 's/\.c/\.o/' | tr '\n' ' ')"
        CFLAGS+="-DLFS_NO_ASSERT -DLFS_NO_DEBUG -DLFS_NO_WARN -DLFS_NO_ERROR"
        | tee sizes
  # update status if we succeeded, compare with master if possible
  - |
    if [ "$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 != \"$TRAVIS_COMMIT\")
                | .statuses[] | select(.context == \"${TRAVIS_BUILD_STAGE_NAME,,}/$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

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

# job control
jobs:
  # native testing
  - &x86
    stage: test
    env:
      - NAME=littlefs-x86
    install: *install-common
    script: [*test-example, *report-size]
  - {<<: *x86, script: [*test-default,          *report-size]}
  - {<<: *x86, script: [*test-nor,              *report-size]}
  - {<<: *x86, script: [*test-emmc,             *report-size]}
  - {<<: *x86, script: [*test-nand,             *report-size]}
  - {<<: *x86, script: [*test-no-intrinsics,    *report-size]}
  - {<<: *x86, script: [*test-no-inline,        *report-size]}
  - {<<: *x86, script: [*test-byte-writes,      *report-size]}
  - {<<: *x86, script: [*test-block-cycles,     *report-size]}
  - {<<: *x86, script: [*test-odd-block-count,  *report-size]}
  - {<<: *x86, script: [*test-odd-block-size,   *report-size]}

  # cross-compile with ARM (thumb mode)
  - &arm
    stage: test
    env:
      - NAME=littlefs-arm
      - CC="arm-linux-gnueabi-gcc --static -mthumb"
      - TFLAGS="$TFLAGS --exec=qemu-arm"
    install:
      - *install-common
      - sudo apt-get install
            gcc-arm-linux-gnueabi
            libc6-dev-armel-cross
            qemu-user
      - arm-linux-gnueabi-gcc --version
      - qemu-arm -version
    script: [*test-example, *report-size]
  - {<<: *arm, script: [*test-default,          *report-size]}
  - {<<: *arm, script: [*test-nor,              *report-size]}
  - {<<: *arm, script: [*test-emmc,             *report-size]}
  - {<<: *arm, script: [*test-nand,             *report-size]}
  - {<<: *arm, script: [*test-no-intrinsics,    *report-size]}
  - {<<: *arm, script: [*test-no-inline,        *report-size]}
  # it just takes way to long to run byte-level writes in qemu,
  # note this is still tested in the native tests
  #- {<<: *arm, script: [*test-byte-writes,      *report-size]}
  - {<<: *arm, script: [*test-block-cycles,     *report-size]}
  - {<<: *arm, script: [*test-odd-block-count,  *report-size]}
  - {<<: *arm, script: [*test-odd-block-size,   *report-size]}

  # cross-compile with MIPS
  - &mips
    stage: test
    env:
      - NAME=littlefs-mips
      - CC="mips-linux-gnu-gcc --static"
      - TFLAGS="$TFLAGS --exec=qemu-mips"
    install:
      - *install-common
      - sudo apt-get install
            gcc-mips-linux-gnu
            libc6-dev-mips-cross
            qemu-user
      - mips-linux-gnu-gcc --version
      - qemu-mips -version
    script: [*test-example, *report-size]
  - {<<: *mips, script: [*test-default,          *report-size]}
  - {<<: *mips, script: [*test-nor,              *report-size]}
  - {<<: *mips, script: [*test-emmc,             *report-size]}
  - {<<: *mips, script: [*test-nand,             *report-size]}
  - {<<: *mips, script: [*test-no-intrinsics,    *report-size]}
  - {<<: *mips, script: [*test-no-inline,        *report-size]}
  # it just takes way to long to run byte-level writes in qemu,
  # note this is still tested in the native tests
  #- {<<: *mips, script: [*test-byte-writes,      *report-size]}
  - {<<: *mips, script: [*test-block-cycles,     *report-size]}
  - {<<: *mips, script: [*test-odd-block-count,  *report-size]}
  - {<<: *mips, script: [*test-odd-block-size,   *report-size]}

  # cross-compile with PowerPC
  - &powerpc
    stage: test
    env:
      - NAME=littlefs-powerpc
      - CC="powerpc-linux-gnu-gcc --static"
      - TFLAGS="$TFLAGS --exec=qemu-ppc"
    install:
      - *install-common
      - sudo apt-get install
            gcc-powerpc-linux-gnu
            libc6-dev-powerpc-cross
            qemu-user
      - powerpc-linux-gnu-gcc --version
      - qemu-ppc -version
    script: [*test-example, *report-size]
  - {<<: *powerpc, script: [*test-default,          *report-size]}
  - {<<: *powerpc, script: [*test-nor,              *report-size]}
  - {<<: *powerpc, script: [*test-emmc,             *report-size]}
  - {<<: *powerpc, script: [*test-nand,             *report-size]}
  - {<<: *powerpc, script: [*test-no-intrinsics,    *report-size]}
  - {<<: *powerpc, script: [*test-no-inline,        *report-size]}
  # it just takes way to long to run byte-level writes in qemu,
  # note this is still tested in the native tests
  #- {<<: *powerpc, script: [*test-byte-writes,      *report-size]}
  - {<<: *powerpc, script: [*test-block-cycles,     *report-size]}
  - {<<: *powerpc, script: [*test-odd-block-count,  *report-size]}
  - {<<: *powerpc, script: [*test-odd-block-size,   *report-size]}

  # test under valgrind, checking for memory errors
  - &valgrind
    stage: test
    env:
      - NAME=littlefs-valgrind
    install:
      - *install-common
      - sudo apt-get install valgrind
      - valgrind --version
    script:
      - make test TFLAGS+="-k --valgrind"

  # test compilation in read-only mode
  - stage: test
    env:
      - NAME=littlefs-readonly
      - CC="arm-linux-gnueabi-gcc --static -mthumb"
      - CFLAGS="-Werror -DLFS_READONLY"
    if: branch !~ -prefix$
    install:
      - *install-common
      - sudo apt-get install
            gcc-arm-linux-gnueabi
            libc6-dev-armel-cross
      - arm-linux-gnueabi-gcc --version
    # report-size will compile littlefs and report the size
    script: [*report-size]

  # test compilation in thread-safe mode
  - stage: test
    env:
      - NAME=littlefs-threadsafe
      - CC="arm-linux-gnueabi-gcc --static -mthumb"
      - CFLAGS="-Werror -DLFS_THREADSAFE"
    if: branch !~ -prefix$
    install:
      - *install-common
      - sudo apt-get install
            gcc-arm-linux-gnueabi
            libc6-dev-armel-cross
      - arm-linux-gnueabi-gcc --version
    # report-size will compile littlefs and report the size
    script: [*report-size]

  # self-host with littlefs-fuse for fuzz test
  - stage: test
    env:
      - NAME=littlefs-fuse
    if: branch !~ -prefix$
    install:
      - *install-common
      - sudo apt-get install libfuse-dev
      - git clone --depth 1 https://github.com/geky/littlefs-fuse -b v2
      - fusermount -V
      - gcc --version

      # 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=128K 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

  # test migration using littlefs-fuse
  - stage: test
    env:
      - NAME=littlefs-migration
    if: branch !~ -prefix$
    install:
      - *install-common
      - 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

      # 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=128K 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

      # 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

  # automatically create releases
  - stage: deploy
    env:
      - 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:
  - |
    # don't clobber other (not us) failures
    if ! curl https://api.github.com/repos/$TRAVIS_REPO_SLUG/status/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
        | jq -e ".statuses[] | select(
            .context == \"${TRAVIS_BUILD_STAGE_NAME,,}/$NAME\" and
            .state == \"failure\" and
            (.target_url | endswith(\"$TRAVIS_JOB_NUMBER\") | not))"
    then
        curl -u "$GEKY_BOT_STATUSES" -X POST \
            https://api.github.com/repos/$TRAVIS_REPO_SLUG/statuses/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
            -d "{
                \"context\": \"${TRAVIS_BUILD_STAGE_NAME,,}/$NAME\",
                \"state\": \"pending\",
                \"description\": \"${STATUS:-In progress}\",
                \"target_url\": \"$TRAVIS_JOB_WEB_URL#$TRAVIS_JOB_NUMBER\"
            }"
    fi

after_failure:
  - |
    # don't clobber other (not us) failures
    if ! curl https://api.github.com/repos/$TRAVIS_REPO_SLUG/status/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
        | jq -e ".statuses[] | select(
            .context == \"${TRAVIS_BUILD_STAGE_NAME,,}/$NAME\" and
            .state == \"failure\" and
            (.target_url | endswith(\"$TRAVIS_JOB_NUMBER\") | not))"
    then
        curl -u "$GEKY_BOT_STATUSES" -X POST \
            https://api.github.com/repos/$TRAVIS_REPO_SLUG/statuses/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
            -d "{
                \"context\": \"${TRAVIS_BUILD_STAGE_NAME,,}/$NAME\",
                \"state\": \"failure\",
                \"description\": \"${STATUS:-Failed}\",
                \"target_url\": \"$TRAVIS_JOB_WEB_URL#$TRAVIS_JOB_NUMBER\"
            }"
    fi

after_success:
  - |
    # don't clobber other (not us) failures
    # only update if we were last job to mark in progress,
    # this isn't perfect but is probably good enough
    if ! curl https://api.github.com/repos/$TRAVIS_REPO_SLUG/status/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
        | jq -e ".statuses[] | select(
            .context == \"${TRAVIS_BUILD_STAGE_NAME,,}/$NAME\" and
            (.state == \"failure\" or .state == \"pending\") and
            (.target_url | endswith(\"$TRAVIS_JOB_NUMBER\") | not))"
    then
        curl -u "$GEKY_BOT_STATUSES" -X POST \
            https://api.github.com/repos/$TRAVIS_REPO_SLUG/statuses/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
            -d "{
                \"context\": \"${TRAVIS_BUILD_STAGE_NAME,,}/$NAME\",
                \"state\": \"success\",
                \"description\": \"${STATUS:-Passed}\",
                \"target_url\": \"$TRAVIS_JOB_WEB_URL#$TRAVIS_JOB_NUMBER\"
            }"
    fi