name: pyThtoQgis

on:

  push:
    branches:
      - main

    paths:
      - 'Outputs/SHP/*.shp'

  workflow_dispatch:


permissions:
  contents: write


concurrency:
  group: pyThtoQgis
  cancel-in-progress: false


jobs:

  pyThtoQgis:

    runs-on: ubuntu-24.04

    steps:


      # ============================================================
      # 1. Checkout
      # ============================================================

      - name: Checkout repository
        uses: actions/checkout@v6
        with:
          fetch-depth: 0


      # ============================================================
      # 2. Vérification SHP
      # ============================================================

      - name: Check SHP changes
        id: changed
        shell: bash
        run: |

          SHP_FILES=$(git diff-tree \
            --no-commit-id \
            --name-only \
            --diff-filter=AM \
            -r \
            "$GITHUB_SHA" \
            -- 'Outputs/SHP/*.shp')


          echo "SHP ajoutés/modifiés :"

          echo "$SHP_FILES"


          if [ -n "$SHP_FILES" ]; then

            echo "shp=true" >> "$GITHUB_OUTPUT"

          else

            echo "shp=false" >> "$GITHUB_OUTPUT"

          fi


      # ============================================================
      # 3. Arrêt si suppression uniquement
      # ============================================================

      - name: Stop if no SHP added or modified
        if: steps.changed.outputs.shp != 'true'
        shell: bash
        run: |

          echo "Aucun SHP ajouté ou modifié."
          echo "Arrêt du workflow."


      # ============================================================
      # 4. Micromamba
      #
      # IMPORTANT :
      # PAS de GDAL ici.
      #
      # GDAL sera fourni par notre package précompilé.
      # ============================================================

      - name: Setup Micromamba
        if: steps.changed.outputs.shp == 'true'
        uses: mamba-org/setup-micromamba@v3.2.1
        with:

          environment-name: pyThtoQgis

          create-args: >-
            python=3.12
            numpy
            sfcgal=2.2
            geos
            proj
            sqlite
            libtiff
            libjpeg-turbo
            libpng
            zlib
            curl
            openssl

          init-shell: bash

          cache-environment: true
          cache-downloads: true


      # ============================================================
      # 5. Informations environnement
      # ============================================================

      - name: Environment information
        if: steps.changed.outputs.shp == 'true'
        shell: bash -el {0}
        run: |

          echo "========================================"
          echo "ENVIRONMENT"
          echo "========================================"

          echo "CONDA_PREFIX=$CONDA_PREFIX"

          python --version

          echo ""

          conda list | grep -E \
            "python|numpy|sfcgal|geos|proj|sqlite"


      # ============================================================
      # 6. Téléchargement package GDAL
      # ============================================================

      - name: Download GDAL + SFCGAL package
        if: steps.changed.outputs.shp == 'true'
        shell: bash -el {0}
        env:
          GH_TOKEN: ${{ github.token }}
        run: |

          set -e

          GDAL_VERSION=3.13.3

          PACKAGE_NAME="gdal-${GDAL_VERSION}-sfcgal-2.2-geos-3.14.1-ubuntu-24.04"

          TAG="gdal-sfcgal-${GDAL_VERSION}"


          echo "========================================"
          echo "GDAL PACKAGE"
          echo "========================================"

          echo "Release : $TAG"

          echo "Package : $PACKAGE_NAME"


          gh release download "$TAG" \
            --repo "$GITHUB_REPOSITORY" \
            --pattern "${PACKAGE_NAME}.tar.gz" \
            --dir "$RUNNER_TEMP"


          echo ""
          echo "Package téléchargé :"

          ls -lh \
            "$RUNNER_TEMP/${PACKAGE_NAME}.tar.gz"

      # ============================================================
      # 7. Installation package GDAL
      # ============================================================

      - name: Install GDAL package
        if: steps.changed.outputs.shp == 'true'
        shell: bash -el {0}
        run: |

          set -e

          GDAL_VERSION=3.13.3

          PACKAGE_NAME="gdal-${GDAL_VERSION}-sfcgal-2.2-geos-3.14.1-ubuntu-24.04"

          PACKAGE="$RUNNER_TEMP/${PACKAGE_NAME}.tar.gz"

          EXTRACT_DIR="$RUNNER_TEMP/gdal-extract"


          echo "========================================"
          echo "INSTALLATION GDAL"
          echo "========================================"


          # ========================================================
          # Vérification package
          # ========================================================

          if [ ! -f "$PACKAGE" ]; then

              echo "Erreur : package GDAL introuvable :"
              echo "$PACKAGE"

              exit 1

          fi


          # ========================================================
          # Extraction
          # ========================================================

          rm -rf "$EXTRACT_DIR"

          mkdir -p "$EXTRACT_DIR"

          cd "$EXTRACT_DIR"


          tar \
            -xzf \
            "$PACKAGE"


          echo ""
          echo "Contenu du package :"

          find . \
            -maxdepth 5 \
            -type f \
            | sort


          # ========================================================
          # Déterminer le répertoire racine
          # ========================================================

          GDAL_DIR="$EXTRACT_DIR/$PACKAGE_NAME"


          if [ ! -d "$GDAL_DIR" ]; then

              echo ""
              echo "Erreur : répertoire GDAL absent :"
              echo "$GDAL_DIR"

              find "$EXTRACT_DIR" \
                -maxdepth 3 \
                -print

              exit 1

          fi


          echo ""
          echo "Répertoire GDAL :"
          echo "$GDAL_DIR"


          # ========================================================
          # Vérification structure
          # ========================================================

          echo ""
          echo "Structure :"

          ls -la "$GDAL_DIR"

          echo ""

          if [ -d "$GDAL_DIR/bin" ]; then
              echo "bin/        : OK"
          else
              echo "bin/        : ABSENT"
          fi

          if [ -d "$GDAL_DIR/lib" ]; then
              echo "lib/        : OK"
          else
              echo "lib/        : ABSENT"
          fi

          if [ -d "$GDAL_DIR/share" ]; then
              echo "share/      : OK"
          else
              echo "share/      : ABSENT"
          fi


          # ========================================================
          # Installation
          #
          # Le package reproduit l'arborescence de l'environnement
          # Conda.
          #
          # bin/   -> $CONDA_PREFIX/bin/
          # lib/   -> $CONDA_PREFIX/lib/
          # share/ -> $CONDA_PREFIX/share/
          # ========================================================


          # --------------------------------------------------------
          # bin
          # --------------------------------------------------------

          if [ -d "$GDAL_DIR/bin" ]; then

              echo ""
              echo "Installation des exécutables GDAL..."

              cp -av \
                "$GDAL_DIR/bin/." \
                "$CONDA_PREFIX/bin/"

          fi


          # --------------------------------------------------------
          # lib
          # --------------------------------------------------------

          if [ -d "$GDAL_DIR/lib" ]; then

              echo ""
              echo "Installation des bibliothèques GDAL..."

              cp -av \
                "$GDAL_DIR/lib/." \
                "$CONDA_PREFIX/lib/"

          fi


          # --------------------------------------------------------
          # share
          # --------------------------------------------------------

          if [ -d "$GDAL_DIR/share" ]; then

              echo ""
              echo "Installation des données GDAL..."

              cp -av \
                "$GDAL_DIR/share/." \
                "$CONDA_PREFIX/share/"

          fi


          # --------------------------------------------------------
          # Python bindings
          #
          # Si osgeo est déjà présent dans lib/python3.12/site-packages,
          # on le remplace par celui compilé avec notre GDAL.
          # --------------------------------------------------------

          if [ -d "$GDAL_DIR/lib/python3.12/site-packages/osgeo" ]; then

              echo ""
              echo "Installation des bindings Python osgeo..."

              rm -rf \
                "$CONDA_PREFIX/lib/python3.12/site-packages/osgeo"

              cp -av \
                "$GDAL_DIR/lib/python3.12/site-packages/osgeo" \
                "$CONDA_PREFIX/lib/python3.12/site-packages/"

          else

              echo ""
              echo "Avertissement : bindings Python osgeo absents du package."

          fi


          # ========================================================
          # Vérification finale
          # ========================================================

          echo ""
          echo "========================================"
          echo "GDAL INSTALLE"
          echo "========================================"


          echo ""
          echo "gdalinfo :"

          if [ -x "$CONDA_PREFIX/bin/gdalinfo" ]; then

              "$CONDA_PREFIX/bin/gdalinfo" --version

          else

              echo "ERREUR : gdalinfo absent"

              exit 1

          fi


          echo ""
          echo "libgdal :"

          ls -lh \
            "$CONDA_PREFIX"/lib/libgdal.so*


          echo ""
          echo "Python osgeo :"

          python - <<'PY'

          from osgeo import gdal
          from osgeo import ogr

          print("GDAL Python :")
          print(gdal.VersionInfo("--version"))

          print()
          print("OGR drivers :", ogr.GetDriverCount())

          PY


          echo ""
          echo "Installation GDAL terminée."

      # ============================================================
      # 8. Vérification GDAL
      # ============================================================

      - name: Check GDAL
        if: steps.changed.outputs.shp == 'true'
        shell: bash -el {0}
        run: |

          set -e

          echo "========================================"
          echo "GDAL"
          echo "========================================"


          which gdalinfo

          gdalinfo --version


          echo ""
          echo "Python GDAL :"


          python - <<'PY'

          from osgeo import gdal

          print(
              gdal.VersionInfo("--version")
          )

          print()

          print(
              gdal.VersionInfo("--build-info")
          )

          PY


      # ============================================================
      # 9. Vérification SFCGAL
      # ============================================================

      - name: Check SFCGAL linkage
        if: steps.changed.outputs.shp == 'true'
        shell: bash -el {0}
        run: |

          set -e

          echo "========================================"
          echo "GDAL / SFCGAL"
          echo "========================================"


          ldd "$CONDA_PREFIX/lib/libgdal.so" \
            | grep -Ei "sfcgal|geos"


      # ============================================================
      # 10. Test SFCGAL
      # ============================================================

      - name: Test SFCGAL via OGR
        if: steps.changed.outputs.shp == 'true'
        shell: bash -el {0}
        run: |

          python - <<'PY'

          from osgeo import ogr
          from osgeo import gdal

          print("========================================")
          print("TEST SFCGAL")
          print("========================================")

          print(
              gdal.VersionInfo("--version")
          )


          wkt = """
          POLYHEDRALSURFACE Z (
              (
                  (0 0 0,
                   10 0 0,
                   10 10 0,
                   0 10 0,
                   0 0 0)
              )
          )
          """


          geom = ogr.CreateGeometryFromWkt(wkt)


          if geom is None:

              raise RuntimeError(
                  "Impossible de créer la géométrie 3D"
              )


          print(
              "Type :",
              geom.GetGeometryName()
          )


          print(
              "Geometry type :",
              geom.GetGeometryType()
          )


          print(
              "Has Z :",
              ogr.GT_HasZ(
                  geom.GetGeometryType()
              )
          )


          valid = geom.IsValid()


          print(
              "IsValid() :",
              valid
          )


          print()
          print(
              "SFCGAL accessible par OGR : OK"
          )

          PY


      # ============================================================
      # 11. Dépendances Python
      # ============================================================

      - name: Install Python dependencies
        if: steps.changed.outputs.shp == 'true'
        shell: bash -el {0}
        run: |

          python -m pip install --upgrade pip

          pip install \
            alive-progress


      # ============================================================
      # 12. Affichage des SHP
      # ============================================================

      - name: List SHP input files
        if: steps.changed.outputs.shp == 'true'
        shell: bash -el {0}
        run: |

          echo "========================================"
          echo "SHP INPUT"
          echo "========================================"

          find Outputs/SHP \
            -maxdepth 1 \
            -type f \
            -name "*.shp" \
            -print


      # ============================================================
      # 13. Exécution pyThtoQgis
      # ============================================================

      - name: Run pyThtoQgis
        if: steps.changed.outputs.shp == 'true'
        shell: bash -el {0}
        run: |

          echo "========================================"
          echo "pyThtoQgis"
          echo "========================================"

          cd Scripts/pyThtoQgis

          python pyThtoQgis.py \
            --folder "../../Outputs/SHP/"


      # ============================================================
      # 14. Fichiers produits
      # ============================================================

      - name: Show generated files
        if: steps.changed.outputs.shp == 'true'
        shell: bash
        run: |

          echo "========================================"
          echo "GENERATED FILES"
          echo "========================================"

          git status --short

          echo ""

          git diff --stat


      # ============================================================
      # 15. Commit
      # ============================================================

      - name: Commit generated files
        if: steps.changed.outputs.shp == 'true'
        uses: stefanzweifel/git-auto-commit-action@v7
        with:

          commit_message: "Auto-generate outputs from SHP"

          commit_user_name: "github-actions[bot]"

          commit_user_email: "41898282+github-actions[bot]@users.noreply.github.com"

          commit_author: "github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>"