#!/usr/bin/env bash
set -eu


__mise_bootstrap() {
    local script_dir=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
    local project_dir=$( cd -- "$( dirname -- "$script_dir" )" &> /dev/null && pwd )
    export MISE_BOOTSTRAP_PROJECT_DIR="$project_dir"
    local localized_dir="$project_dir/.mise"
    export MISE_BOOTSTRAP_PROJECT_DIR="$project_dir"
    export MISE_DATA_DIR="$localized_dir"
    export MISE_CONFIG_DIR="$localized_dir"
    export MISE_CACHE_DIR="$localized_dir/cache"
    export MISE_STATE_DIR="$localized_dir/state"
    export MISE_INSTALL_PATH="$localized_dir/mise-2025.3.2"
    export MISE_TRUSTED_CONFIG_PATHS="$project_dir${MISE_TRUSTED_CONFIG_PATHS:+:$MISE_TRUSTED_CONFIG_PATHS}"
    export MISE_IGNORED_CONFIG_PATHS="$HOME/.config/mise${MISE_IGNORED_CONFIG_PATHS:+:$MISE_IGNORED_CONFIG_PATHS}"
    install() {
        #!/bin/sh
        set -eu

        #region logging setup
        if [ "${MISE_DEBUG-}" = "true" ] || [ "${MISE_DEBUG-}" = "1" ]; then
          debug() {
            echo "$@" >&2
          }
        else
          debug() {
            :
          }
        fi

        if [ "${MISE_QUIET-}" = "1" ] || [ "${MISE_QUIET-}" = "true" ]; then
          info() {
            :
          }
        else
          info() {
            echo "$@" >&2
          }
        fi

        error() {
          echo "$@" >&2
          exit 1
        }
        #endregion

        #region environment setup
        get_os() {
          os="$(uname -s)"
          if [ "$os" = Darwin ]; then
            echo "macos"
          elif [ "$os" = Linux ]; then
            echo "linux"
          else
            error "unsupported OS: $os"
          fi
        }

        get_arch() {
          musl=""
          if type ldd >/dev/null 2>/dev/null; then
            libc=$(ldd /bin/ls | grep 'musl' | head -1 | cut -d ' ' -f1)
            if [ -n "$libc" ]; then
              musl="-musl"
            fi
          fi
          arch="$(uname -m)"
          if [ "$arch" = x86_64 ]; then
            echo "x64$musl"
          elif [ "$arch" = aarch64 ] || [ "$arch" = arm64 ]; then
            echo "arm64$musl"
          elif [ "$arch" = armv7l ]; then
            echo "armv7$musl"
          else
            error "unsupported architecture: $arch"
          fi
        }

        get_ext() {
          if [ -n "${MISE_INSTALL_EXT:-}" ]; then
            echo "$MISE_INSTALL_EXT"
          elif [ -n "${MISE_VERSION:-}" ] && echo "$MISE_VERSION" | grep -q '^v2024'; then
            # 2024 versions don't have zstd tarballs
            echo "tar.gz"
          elif tar_supports_zstd; then
            echo "tar.zst"
          elif command -v zstd >/dev/null 2>&1; then
            echo "tar.zst"
          else
            echo "tar.gz"
          fi
        }

        tar_supports_zstd() {
          # tar is bsdtar or version is >= 1.31
          if tar --version | grep -q 'bsdtar' && command -v zstd >/dev/null 2>&1; then
            true
          elif tar --version | grep -q '1\.(3[1-9]|[4-9][0-9]'; then
            true
          else
            false
          fi
        }

        shasum_bin() {
          if command -v shasum >/dev/null 2>&1; then
            echo "shasum"
          elif command -v sha256sum >/dev/null 2>&1; then
            echo "sha256sum"
          else
            error "mise install requires shasum or sha256sum but neither is installed. Aborting."
          fi
        }

        get_checksum() {
          version=$1
          os="$(get_os)"
          arch="$(get_arch)"
          ext="$(get_ext)"
          url="https://github.com/jdx/mise/releases/download/v${version}/SHASUMS256.txt"

          # For current version use static checksum otherwise
          # use checksum from releases
          if [ "$version" = "v2025.3.2" ]; then
            checksum_linux_x86_64="5d2e40270c32c906385c1b35c8dac0f995c4765b429aff5fe67e9efc9957aed5  ./mise-v2025.3.2-linux-x64.tar.gz"
            checksum_linux_x86_64_musl="d8312658bd020b717a90bc2c3729625656c97b37c70edda645ce8bcbd68edf56  ./mise-v2025.3.2-linux-x64-musl.tar.gz"
            checksum_linux_arm64="8dd66426b9f36f5c1bed161d3d79b2e12294c1c8a9801b1f654311e008787a5b  ./mise-v2025.3.2-linux-arm64.tar.gz"
            checksum_linux_arm64_musl="7746d2ab653caa73128936dd2bc7704fe4f106fa58597d65f5020843767f3ceb  ./mise-v2025.3.2-linux-arm64-musl.tar.gz"
            checksum_linux_armv7="a2a626b3e1d393e19fe600103e97659acec8de18f6868014928a2a3f68301307  ./mise-v2025.3.2-linux-armv7.tar.gz"
            checksum_linux_armv7_musl="e3dc41cdf7ce857c322b8713fc619708ad7c8f1da8d5b00b7a6fb62f215819f6  ./mise-v2025.3.2-linux-armv7-musl.tar.gz"
            checksum_macos_x86_64="c1f58a5772b80e2d7fe64f6c0dd832c38c5146deb763130f71f09984a5328acb  ./mise-v2025.3.2-macos-x64.tar.gz"
            checksum_macos_arm64="d5f836d2e946201147be4ca3467c547ab847a14f93b26c6a4f736804fc2107ef  ./mise-v2025.3.2-macos-arm64.tar.gz"
            checksum_linux_x86_64_zstd="ea4f403772ec034bc11f654f410aeaade40fcffc1cee78fd02340f8bae3e9db7  ./mise-v2025.3.2-linux-x64.tar.zst"
            checksum_linux_x86_64_musl_zstd="c7c6f96421658eb7cb8f7fd8cb37e36fc91b025d0564899828376d07789a80b4  ./mise-v2025.3.2-linux-x64-musl.tar.zst"
            checksum_linux_arm64_zstd="5696404d02481cd8bd9d9d8a721ec80141f3f74cb0f77f3eee0bbf3fc0f9b20b  ./mise-v2025.3.2-linux-arm64.tar.zst"
            checksum_linux_arm64_musl_zstd="68695587360d52bd6889e11ff79ff1b18a533fc81c56dadf213db9364b1ca082  ./mise-v2025.3.2-linux-arm64-musl.tar.zst"
            checksum_linux_armv7_zstd="6411d630c4515a49ab903865647a1da0fa3fe97c4a990ccd078364abcb6b2d7b  ./mise-v2025.3.2-linux-armv7.tar.zst"
            checksum_linux_armv7_musl_zstd="fbcbd945b7700f9c54e7dea423010889df1a51ca3edf25b20a01766e706619d5  ./mise-v2025.3.2-linux-armv7-musl.tar.zst"
            checksum_macos_x86_64_zstd="af0af814ad8aa8828bd4cef455f3edc4059984ea3490bec4827778ca9c73951b  ./mise-v2025.3.2-macos-x64.tar.zst"
            checksum_macos_arm64_zstd="30763db42007598d8c6042d88bf6045bb3834e8d12a0844a5aa0005d609beb8b  ./mise-v2025.3.2-macos-arm64.tar.zst"

            # TODO: refactor this, it's a bit messy
            if [ "$(get_ext)" = "tar.zst" ]; then
              if [ "$os" = "linux" ]; then
                if [ "$arch" = "x64" ]; then
                  echo "$checksum_linux_x86_64_zstd"
                elif [ "$arch" = "x64-musl" ]; then
                  echo "$checksum_linux_x86_64_musl_zstd"
                elif [ "$arch" = "arm64" ]; then
                  echo "$checksum_linux_arm64_zstd"
                elif [ "$arch" = "arm64-musl" ]; then
                  echo "$checksum_linux_arm64_musl_zstd"
                elif [ "$arch" = "armv7" ]; then
                  echo "$checksum_linux_armv7_zstd"
                elif [ "$arch" = "armv7-musl" ]; then
                  echo "$checksum_linux_armv7_musl_zstd"
                else
                  warn "no checksum for $os-$arch"
                fi
              elif [ "$os" = "macos" ]; then
                if [ "$arch" = "x64" ]; then
                  echo "$checksum_macos_x86_64_zstd"
                elif [ "$arch" = "arm64" ]; then
                  echo "$checksum_macos_arm64_zstd"
                else
                  warn "no checksum for $os-$arch"
                fi
              else
                warn "no checksum for $os-$arch"
              fi
            else
              if [ "$os" = "linux" ]; then
                if [ "$arch" = "x64" ]; then
                  echo "$checksum_linux_x86_64"
                elif [ "$arch" = "x64-musl" ]; then
                  echo "$checksum_linux_x86_64_musl"
                elif [ "$arch" = "arm64" ]; then
                  echo "$checksum_linux_arm64"
                elif [ "$arch" = "arm64-musl" ]; then
                  echo "$checksum_linux_arm64_musl"
                elif [ "$arch" = "armv7" ]; then
                  echo "$checksum_linux_armv7"
                elif [ "$arch" = "armv7-musl" ]; then
                  echo "$checksum_linux_armv7_musl"
                else
                  warn "no checksum for $os-$arch"
                fi
              elif [ "$os" = "macos" ]; then
                if [ "$arch" = "x64" ]; then
                  echo "$checksum_macos_x86_64"
                elif [ "$arch" = "arm64" ]; then
                  echo "$checksum_macos_arm64"
                else
                  warn "no checksum for $os-$arch"
                fi
              else
                warn "no checksum for $os-$arch"
              fi
            fi
          else
            if command -v curl >/dev/null 2>&1; then
              debug ">" curl -fsSL "$url"
              checksums="$(curl --compressed -fsSL "$url")"
            else
              if command -v wget >/dev/null 2>&1; then
                debug ">" wget -qO - "$url"
                stderr=$(mktemp)
                checksums="$(wget -qO - "$url")"
              else
                error "mise standalone install specific version requires curl or wget but neither is installed. Aborting."
              fi
            fi
            # TODO: verify with minisign or gpg if available

            checksum="$(echo "$checksums" | grep "$os-$arch.$ext")"
            if ! echo "$checksum" | grep -Eq "^([0-9a-f]{32}|[0-9a-f]{64})"; then
              warn "no checksum for mise $version and $os-$arch"
            else
              echo "$checksum"
            fi
          fi
        }

        #endregion

        download_file() {
          url="$1"
          filename="$(basename "$url")"
          cache_dir="$(mktemp -d)"
          file="$cache_dir/$filename"

          info "mise: installing mise..."

          if command -v curl >/dev/null 2>&1; then
            debug ">" curl -#fLo "$file" "$url"
            curl -#fLo "$file" "$url"
          else
            if command -v wget >/dev/null 2>&1; then
              debug ">" wget -qO "$file" "$url"
              stderr=$(mktemp)
              wget -O "$file" "$url" >"$stderr" 2>&1 || error "wget failed: $(cat "$stderr")"
            else
              error "mise standalone install requires curl or wget but neither is installed. Aborting."
            fi
          fi

          echo "$file"
        }

        install_mise() {
          version="${MISE_VERSION:-v2025.3.2}"
          version="${version#v}"
          os="$(get_os)"
          arch="$(get_arch)"
          ext="$(get_ext)"
          install_path="${MISE_INSTALL_PATH:-$HOME/.local/bin/mise}"
          install_dir="$(dirname "$install_path")"
          tarball_url="https://github.com/jdx/mise/releases/download/v${version}/mise-v${version}-${os}-${arch}.${ext}"

          cache_file=$(download_file "$tarball_url")
          debug "mise-setup: tarball=$cache_file"

          debug "validating checksum"
          cd "$(dirname "$cache_file")" && get_checksum "$version" | "$(shasum_bin)" -c >/dev/null

          # extract tarball
          mkdir -p "$install_dir"
          rm -rf "$install_path"
          cd "$(mktemp -d)"
          if [ "$(get_ext)" = "tar.zst" ] && ! tar_supports_zstd; then
            zstd -d -c "$cache_file" | tar -xf -
          else
            tar -xf "$cache_file"
          fi
          mv mise/bin/mise "$install_path"
          info "mise: installed successfully to $install_path"
        }

        after_finish_help() {
          case "${SHELL:-}" in
          */zsh)
            info "mise: run the following to activate mise in your shell:"
            info "echo \"eval \\\"\\\$($install_path activate zsh)\\\"\" >> \"${ZDOTDIR-$HOME}/.zshrc\""
            info ""
            info "mise: run \`mise doctor\` to verify this is setup correctly"
            ;;
          */bash)
            info "mise: run the following to activate mise in your shell:"
            info "echo \"eval \\\"\\\$($install_path activate bash)\\\"\" >> ~/.bashrc"
            info ""
            info "mise: run \`mise doctor\` to verify this is setup correctly"
            ;;
          */fish)
            info "mise: run the following to activate mise in your shell:"
            info "echo \"$install_path activate fish | source\" >> ~/.config/fish/config.fish"
            info ""
            info "mise: run \`mise doctor\` to verify this is setup correctly"
            ;;
          *)
            info "mise: run \`$install_path --help\` to get started"
            ;;
          esac
        }

        install_mise
        if [ "${MISE_INSTALL_HELP-}" != 0 ]; then
          after_finish_help
        fi

        cd "$MISE_BOOTSTRAP_PROJECT_DIR"
    }
    local MISE_INSTALL_HELP=1
    test -f "$MISE_INSTALL_PATH" || install
}
__mise_bootstrap
exec "$MISE_INSTALL_PATH" "$@"
