diff --git a/poetry.lock b/poetry.lock
index 2035045..537b185 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -97,6 +97,18 @@ docs = ["Sphinx (>=8.1.3,<8.2.0)", "sphinx-rtd-theme (>=1.2.2)"]
 gssauth = ["gssapi ; platform_system != \"Windows\"", "sspilib ; platform_system == \"Windows\""]
 test = ["distro (>=1.9.0,<1.10.0)", "flake8 (>=6.1,<7.0)", "flake8-pyi (>=24.1.0,<24.2.0)", "gssapi ; platform_system == \"Linux\"", "k5test ; platform_system == \"Linux\"", "mypy (>=1.8.0,<1.9.0)", "sspilib ; platform_system == \"Windows\"", "uvloop (>=0.15.3) ; platform_system != \"Windows\" and python_version < \"3.14.0\""]
 
+[[package]]
+name = "cachetools"
+version = "5.5.2"
+description = "Extensible memoizing collections and decorators"
+optional = false
+python-versions = ">=3.7"
+groups = ["main"]
+files = [
+    {file = "cachetools-5.5.2-py3-none-any.whl", hash = "sha256:d26a22bcc62eb95c3beabd9f1ee5e820d3d2704fe2967cbe350e20c8ffcd3f0a"},
+    {file = "cachetools-5.5.2.tar.gz", hash = "sha256:1a661caa9175d26759571b2e19580f9d6393969e5dfca11fdb1f947a23e640d4"},
+]
+
 [[package]]
 name = "certifi"
 version = "2024.8.30"
@@ -388,6 +400,133 @@ uvicorn = {version = ">=0.15.0", extras = ["standard"]}
 [package.extras]
 standard = ["uvicorn[standard] (>=0.15.0)"]
 
+[[package]]
+name = "google-api-core"
+version = "2.24.2"
+description = "Google API client core library"
+optional = false
+python-versions = ">=3.7"
+groups = ["main"]
+files = [
+    {file = "google_api_core-2.24.2-py3-none-any.whl", hash = "sha256:810a63ac95f3c441b7c0e43d344e372887f62ce9071ba972eacf32672e072de9"},
+    {file = "google_api_core-2.24.2.tar.gz", hash = "sha256:81718493daf06d96d6bc76a91c23874dbf2fac0adbbf542831b805ee6e974696"},
+]
+
+[package.dependencies]
+google-auth = ">=2.14.1,<3.0.0"
+googleapis-common-protos = ">=1.56.2,<2.0.0"
+proto-plus = [
+    {version = ">=1.22.3,<2.0.0"},
+    {version = ">=1.25.0,<2.0.0", markers = "python_version >= \"3.13\""},
+]
+protobuf = ">=3.19.5,<3.20.0 || >3.20.0,<3.20.1 || >3.20.1,<4.21.0 || >4.21.0,<4.21.1 || >4.21.1,<4.21.2 || >4.21.2,<4.21.3 || >4.21.3,<4.21.4 || >4.21.4,<4.21.5 || >4.21.5,<7.0.0"
+requests = ">=2.18.0,<3.0.0"
+
+[package.extras]
+async-rest = ["google-auth[aiohttp] (>=2.35.0,<3.0.dev0)"]
+grpc = ["grpcio (>=1.33.2,<2.0dev)", "grpcio (>=1.49.1,<2.0dev) ; python_version >= \"3.11\"", "grpcio-status (>=1.33.2,<2.0.dev0)", "grpcio-status (>=1.49.1,<2.0.dev0) ; python_version >= \"3.11\""]
+grpcgcp = ["grpcio-gcp (>=0.2.2,<1.0.dev0)"]
+grpcio-gcp = ["grpcio-gcp (>=0.2.2,<1.0.dev0)"]
+
+[[package]]
+name = "google-api-python-client"
+version = "2.169.0"
+description = "Google API Client Library for Python"
+optional = false
+python-versions = ">=3.7"
+groups = ["main"]
+files = [
+    {file = "google_api_python_client-2.169.0-py3-none-any.whl", hash = "sha256:dae3e882dc0e6f28e60cf09c1f13fedfd881db84f824dd418aa9e44def2fe00d"},
+    {file = "google_api_python_client-2.169.0.tar.gz", hash = "sha256:0585bb97bd5f5bf3ed8d4bf624593e4c5a14d06c811d1952b07a1f94b4d12c51"},
+]
+
+[package.dependencies]
+google-api-core = ">=1.31.5,<2.0.dev0 || >2.3.0,<3.0.0"
+google-auth = ">=1.32.0,<2.24.0 || >2.24.0,<2.25.0 || >2.25.0,<3.0.0"
+google-auth-httplib2 = ">=0.2.0,<1.0.0"
+httplib2 = ">=0.19.0,<1.0.0"
+uritemplate = ">=3.0.1,<5"
+
+[[package]]
+name = "google-auth"
+version = "2.40.2"
+description = "Google Authentication Library"
+optional = false
+python-versions = ">=3.7"
+groups = ["main"]
+files = [
+    {file = "google_auth-2.40.2-py2.py3-none-any.whl", hash = "sha256:f7e568d42eedfded58734f6a60c58321896a621f7c116c411550a4b4a13da90b"},
+    {file = "google_auth-2.40.2.tar.gz", hash = "sha256:a33cde547a2134273226fa4b853883559947ebe9207521f7afc707efbf690f58"},
+]
+
+[package.dependencies]
+cachetools = ">=2.0.0,<6.0"
+pyasn1-modules = ">=0.2.1"
+rsa = ">=3.1.4,<5"
+
+[package.extras]
+aiohttp = ["aiohttp (>=3.6.2,<4.0.0)", "requests (>=2.20.0,<3.0.0)"]
+enterprise-cert = ["cryptography", "pyopenssl"]
+pyjwt = ["cryptography (<39.0.0) ; python_version < \"3.8\"", "cryptography (>=38.0.3)", "pyjwt (>=2.0)"]
+pyopenssl = ["cryptography (<39.0.0) ; python_version < \"3.8\"", "cryptography (>=38.0.3)", "pyopenssl (>=20.0.0)"]
+reauth = ["pyu2f (>=0.1.5)"]
+requests = ["requests (>=2.20.0,<3.0.0)"]
+testing = ["aiohttp (<3.10.0)", "aiohttp (>=3.6.2,<4.0.0)", "aioresponses", "cryptography (<39.0.0) ; python_version < \"3.8\"", "cryptography (>=38.0.3)", "flask", "freezegun", "grpcio", "mock", "oauth2client", "packaging", "pyjwt (>=2.0)", "pyopenssl (<24.3.0)", "pyopenssl (>=20.0.0)", "pytest", "pytest-asyncio", "pytest-cov", "pytest-localserver", "pyu2f (>=0.1.5)", "requests (>=2.20.0,<3.0.0)", "responses", "urllib3"]
+urllib3 = ["packaging", "urllib3"]
+
+[[package]]
+name = "google-auth-httplib2"
+version = "0.2.0"
+description = "Google Authentication Library: httplib2 transport"
+optional = false
+python-versions = "*"
+groups = ["main"]
+files = [
+    {file = "google-auth-httplib2-0.2.0.tar.gz", hash = "sha256:38aa7badf48f974f1eb9861794e9c0cb2a0511a4ec0679b1f886d108f5640e05"},
+    {file = "google_auth_httplib2-0.2.0-py2.py3-none-any.whl", hash = "sha256:b65a0a2123300dd71281a7bf6e64d65a0759287df52729bdd1ae2e47dc311a3d"},
+]
+
+[package.dependencies]
+google-auth = "*"
+httplib2 = ">=0.19.0"
+
+[[package]]
+name = "google-auth-oauthlib"
+version = "1.2.2"
+description = "Google Authentication Library"
+optional = false
+python-versions = ">=3.6"
+groups = ["main"]
+files = [
+    {file = "google_auth_oauthlib-1.2.2-py3-none-any.whl", hash = "sha256:fd619506f4b3908b5df17b65f39ca8d66ea56986e5472eb5978fd8f3786f00a2"},
+    {file = "google_auth_oauthlib-1.2.2.tar.gz", hash = "sha256:11046fb8d3348b296302dd939ace8af0a724042e8029c1b872d87fabc9f41684"},
+]
+
+[package.dependencies]
+google-auth = ">=2.15.0"
+requests-oauthlib = ">=0.7.0"
+
+[package.extras]
+tool = ["click (>=6.0.0)"]
+
+[[package]]
+name = "googleapis-common-protos"
+version = "1.70.0"
+description = "Common protobufs used in Google APIs"
+optional = false
+python-versions = ">=3.7"
+groups = ["main"]
+files = [
+    {file = "googleapis_common_protos-1.70.0-py3-none-any.whl", hash = "sha256:b8bfcca8c25a2bb253e0e0b0adaf8c00773e5e6af6fd92397576680b807e0fd8"},
+    {file = "googleapis_common_protos-1.70.0.tar.gz", hash = "sha256:0e1b44e0ea153e6594f9f394fef15193a68aaaea2d843f83e2742717ca753257"},
+]
+
+[package.dependencies]
+protobuf = ">=3.20.2,<4.21.1 || >4.21.1,<4.21.2 || >4.21.2,<4.21.3 || >4.21.3,<4.21.4 || >4.21.4,<4.21.5 || >4.21.5,<7.0.0"
+
+[package.extras]
+grpc = ["grpcio (>=1.44.0,<2.0.0)"]
+
 [[package]]
 name = "greenlet"
 version = "3.1.1"
@@ -509,6 +648,21 @@ http2 = ["h2 (>=3,<5)"]
 socks = ["socksio (==1.*)"]
 trio = ["trio (>=0.22.0,<1.0)"]
 
+[[package]]
+name = "httplib2"
+version = "0.22.0"
+description = "A comprehensive HTTP client library."
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+groups = ["main"]
+files = [
+    {file = "httplib2-0.22.0-py3-none-any.whl", hash = "sha256:14ae0a53c1ba8f3d37e9e27cf37eabb0fb9980f435ba405d546948b009dd64dc"},
+    {file = "httplib2-0.22.0.tar.gz", hash = "sha256:d7a10bc5ef5ab08322488bde8c726eeee5c8618723fdb399597ec58f3d82df81"},
+]
+
+[package.dependencies]
+pyparsing = {version = ">=2.4.2,<3.0.0 || >3.0.0,<3.0.1 || >3.0.1,<3.0.2 || >3.0.2,<3.0.3 || >3.0.3,<4", markers = "python_version > \"3.0\""}
+
 [[package]]
 name = "httptools"
 version = "0.6.4"
@@ -859,6 +1013,23 @@ files = [
     {file = "numpy-2.1.3.tar.gz", hash = "sha256:aa08e04e08aaf974d4458def539dece0d28146d866a39da5639596f4921fd761"},
 ]
 
+[[package]]
+name = "oauthlib"
+version = "3.2.2"
+description = "A generic, spec-compliant, thorough implementation of the OAuth request-signing logic"
+optional = false
+python-versions = ">=3.6"
+groups = ["main"]
+files = [
+    {file = "oauthlib-3.2.2-py3-none-any.whl", hash = "sha256:8139f29aac13e25d502680e9e19963e83f16838d48a0d71c287fe40e7067fbca"},
+    {file = "oauthlib-3.2.2.tar.gz", hash = "sha256:9859c40929662bec5d64f34d01c99e093149682a3f38915dc0655d5a633dd918"},
+]
+
+[package.extras]
+rsa = ["cryptography (>=3.0.0)"]
+signals = ["blinker (>=1.4.0)"]
+signedtoken = ["cryptography (>=3.0.0)", "pyjwt (>=2.0.0,<3)"]
+
 [[package]]
 name = "packaging"
 version = "24.2"
@@ -973,6 +1144,24 @@ files = [
 dev = ["pre-commit", "tox"]
 testing = ["pytest", "pytest-benchmark"]
 
+[[package]]
+name = "proto-plus"
+version = "1.26.1"
+description = "Beautiful, Pythonic protocol buffers"
+optional = false
+python-versions = ">=3.7"
+groups = ["main"]
+files = [
+    {file = "proto_plus-1.26.1-py3-none-any.whl", hash = "sha256:13285478c2dcf2abb829db158e1047e2f1e8d63a077d94263c2b88b043c75a66"},
+    {file = "proto_plus-1.26.1.tar.gz", hash = "sha256:21a515a4c4c0088a773899e23c7bbade3d18f9c66c73edd4c7ee3816bc96a012"},
+]
+
+[package.dependencies]
+protobuf = ">=3.19.0,<7.0.0"
+
+[package.extras]
+testing = ["google-api-core (>=1.31.5)"]
+
 [[package]]
 name = "protobuf"
 version = "5.29.0"
@@ -1072,6 +1261,33 @@ files = [
     {file = "psycopg2_binary-2.9.10-cp39-cp39-win_amd64.whl", hash = "sha256:30e34c4e97964805f715206c7b789d54a78b70f3ff19fbe590104b71c45600e5"},
 ]
 
+[[package]]
+name = "pyasn1"
+version = "0.6.1"
+description = "Pure-Python implementation of ASN.1 types and DER/BER/CER codecs (X.208)"
+optional = false
+python-versions = ">=3.8"
+groups = ["main"]
+files = [
+    {file = "pyasn1-0.6.1-py3-none-any.whl", hash = "sha256:0d632f46f2ba09143da3a8afe9e33fb6f92fa2320ab7e886e2d0f7672af84629"},
+    {file = "pyasn1-0.6.1.tar.gz", hash = "sha256:6f580d2bdd84365380830acf45550f2511469f673cb4a5ae3857a3170128b034"},
+]
+
+[[package]]
+name = "pyasn1-modules"
+version = "0.4.2"
+description = "A collection of ASN.1-based protocols modules"
+optional = false
+python-versions = ">=3.8"
+groups = ["main"]
+files = [
+    {file = "pyasn1_modules-0.4.2-py3-none-any.whl", hash = "sha256:29253a9207ce32b64c3ac6600edc75368f98473906e8fd1043bd6b5b1de2c14a"},
+    {file = "pyasn1_modules-0.4.2.tar.gz", hash = "sha256:677091de870a80aae844b1ca6134f54652fa2c8c5a52aa396440ac3106e941e6"},
+]
+
+[package.dependencies]
+pyasn1 = ">=0.6.1,<0.7.0"
+
 [[package]]
 name = "pydantic"
 version = "2.10.2"
@@ -1221,6 +1437,21 @@ files = [
 [package.extras]
 windows-terminal = ["colorama (>=0.4.6)"]
 
+[[package]]
+name = "pyparsing"
+version = "3.2.3"
+description = "pyparsing module - Classes and methods to define and execute parsing grammars"
+optional = false
+python-versions = ">=3.9"
+groups = ["main"]
+files = [
+    {file = "pyparsing-3.2.3-py3-none-any.whl", hash = "sha256:a749938e02d6fd0b59b356ca504a24982314bb090c383e3cf201c95ef7e2bfcf"},
+    {file = "pyparsing-3.2.3.tar.gz", hash = "sha256:b9c13f1ab8b3b542f72e28f634bad4de758ab3ce4546e4301970ad6fa77c38be"},
+]
+
+[package.extras]
+diagrams = ["jinja2", "railroad-diagrams"]
+
 [[package]]
 name = "pytest"
 version = "8.3.3"
@@ -1381,6 +1612,25 @@ urllib3 = ">=1.21.1,<3"
 socks = ["PySocks (>=1.5.6,!=1.5.7)"]
 use-chardet-on-py3 = ["chardet (>=3.0.2,<6)"]
 
+[[package]]
+name = "requests-oauthlib"
+version = "2.0.0"
+description = "OAuthlib authentication support for Requests."
+optional = false
+python-versions = ">=3.4"
+groups = ["main"]
+files = [
+    {file = "requests-oauthlib-2.0.0.tar.gz", hash = "sha256:b3dffaebd884d8cd778494369603a9e7b58d29111bf6b41bdc2dcd87203af4e9"},
+    {file = "requests_oauthlib-2.0.0-py2.py3-none-any.whl", hash = "sha256:7dd8a5c40426b779b0868c404bdef9768deccf22749cde15852df527e6269b36"},
+]
+
+[package.dependencies]
+oauthlib = ">=3.0.0"
+requests = ">=2.0.0"
+
+[package.extras]
+rsa = ["oauthlib[signedtoken] (>=3.0.0)"]
+
 [[package]]
 name = "rich"
 version = "13.9.4"
@@ -1400,6 +1650,21 @@ pygments = ">=2.13.0,<3.0.0"
 [package.extras]
 jupyter = ["ipywidgets (>=7.5.1,<9)"]
 
+[[package]]
+name = "rsa"
+version = "4.9.1"
+description = "Pure-Python RSA implementation"
+optional = false
+python-versions = "<4,>=3.6"
+groups = ["main"]
+files = [
+    {file = "rsa-4.9.1-py3-none-any.whl", hash = "sha256:68635866661c6836b8d39430f97a996acbd61bfa49406748ea243539fe239762"},
+    {file = "rsa-4.9.1.tar.gz", hash = "sha256:e7bdbfdb5497da4c07dfd35530e1a902659db6ff241e39d9953cad06ebd0ae75"},
+]
+
+[package.dependencies]
+pyasn1 = ">=0.1.3"
+
 [[package]]
 name = "shellingham"
 version = "1.5.4"
@@ -1697,6 +1962,18 @@ files = [
     {file = "tzdata-2024.2.tar.gz", hash = "sha256:7d85cc416e9382e69095b7bdf4afd9e3880418a2413feec7069d533d6b4e31cc"},
 ]
 
+[[package]]
+name = "uritemplate"
+version = "4.1.1"
+description = "Implementation of RFC 6570 URI Templates"
+optional = false
+python-versions = ">=3.6"
+groups = ["main"]
+files = [
+    {file = "uritemplate-4.1.1-py2.py3-none-any.whl", hash = "sha256:830c08b8d99bdd312ea4ead05994a38e8936266f84b9a7878232db50b044e02e"},
+    {file = "uritemplate-4.1.1.tar.gz", hash = "sha256:4346edfc5c3b79f694bccd6d6099a322bbeb628dbf2cd86eea55a456ce5124f0"},
+]
+
 [[package]]
 name = "urllib3"
 version = "2.2.3"
@@ -2035,4 +2312,4 @@ files = [
 [metadata]
 lock-version = "2.1"
 python-versions = "^3.11"
-content-hash = "34cff1e8de752f5b94a7012e1810f7f86fc5b7f6978da8ff5adc8e1e4516ef59"
+content-hash = "3653b5daa2723d735ad026b0e3c111971358950a359a7469d410cfcc468a556b"
diff --git a/pyproject.toml b/pyproject.toml
index 1b49de8..dcaae4c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,6 +26,9 @@ temporalio = "^1.8.0"
 pandas = "^2.2.3"
 psycopg2-binary = "^2.9.10"
 greenlet = "^3.1.1"
+google-api-python-client = "^2.169.0"
+google-auth-httplib2 = "^0.2.0"
+google-auth-oauthlib = "^1.2.2"
 
 
 [build-system]
diff --git a/src/api.py b/src/api.py
index bd43f79..f91bf75 100644
--- a/src/api.py
+++ b/src/api.py
@@ -19,6 +19,9 @@ from src.overhaul_scope.router import router as scope_router
 from src.scope_equipment.router import router as scope_equipment_router
 from src.scope_equipment_job.router import router as scope_equipment_job_router
 from src.overhaul_schedule.router import router as overhaul_schedule_router
+from src.overhaul_gantt.router import router as gantt_router
+
+
 # from src.overhaul_scope.router import router as scope_router
 # from src.scope_equipment.router import router as scope_equipment_router
 # from src.overhaul.router import router as overhaul_router
@@ -95,6 +98,10 @@ authenticated_api_router.include_router(
     job_overhaul_router, prefix="/overhaul-jobs", tags=["job", "overhaul"]
 )
 
+authenticated_api_router.include_router(
+    gantt_router, prefix="/overhaul-gantt", tags=["gantt"]
+)
+
 # authenticated_api_router.include_router(
 #     overhaul_history_router, prefix="/overhaul-history", tags=["overhaul_history"]
 # )
diff --git a/src/overhaul_gantt/model.py b/src/overhaul_gantt/model.py
index 707b009..e69de29 100644
--- a/src/overhaul_gantt/model.py
+++ b/src/overhaul_gantt/model.py
@@ -1,18 +0,0 @@
-from sqlalchemy import (UUID, Column, DateTime, Float, ForeignKey, Integer,
-                        String)
-from sqlalchemy.orm import relationship
-
-from src.database.core import Base
-from src.models import DefaultMixin, IdentityMixin, TimeStampMixin
-
-
-class OverhaulSchedule(Base, DefaultMixin):
-    __tablename__ = "rp_oh_schedule"
-
-    year = Column(Integer, nullable=False)
-    plan_duration = Column(Integer, nullable=True)
-    planned_outage = Column(Integer, nullable=True)
-    actual_shutdown = Column(Integer, nullable=True)
-    start = Column(DateTime(timezone=True))  # This will be TIMESTAMP WITH TIME ZONE
-    finish = Column(DateTime(timezone=True))
-    remark = Column(String, nullable=True)
diff --git a/src/overhaul_gantt/router.py b/src/overhaul_gantt/router.py
index 0425baa..21972a2 100644
--- a/src/overhaul_gantt/router.py
+++ b/src/overhaul_gantt/router.py
@@ -7,19 +7,19 @@ from src.database.core import DbSession
 from src.database.service import CommonParameters
 from src.models import StandardResponse
 
-from .schema import (OverhaulScheduleCreate, OverhaulSchedulePagination, OverhaulScheduleUpdate)
-from .service import create, get_all, delete, update
+# from .schema import (OverhaulScheduleCreate, OverhaulSchedulePagination, OverhaulScheduleUpdate)
+from .service import get_gantt_performance_chart
 
 router = APIRouter()
 
 
 @router.get(
-    "", response_model=StandardResponse[OverhaulSchedulePagination]
+    "", response_model=StandardResponse[list]
 )
-async def get_schedules(common: CommonParameters):
+async def get_gantt_performance():
     """Get all scope pagination."""
     # return
-    results = await get_all(common=common)
+    results = await get_gantt_performance_chart()
 
 
     return StandardResponse(
@@ -28,36 +28,36 @@ async def get_schedules(common: CommonParameters):
     )
 
 
-@router.post("", response_model=StandardResponse[None])
-async def create_overhaul_equipment_jobs(
-    db_session: DbSession, overhaul_job_in: OverhaulScheduleCreate
-):
-    await create(
-        db_session=db_session,
-        overhaul_job_in=overhaul_job_in,
-    )
-
-    return StandardResponse(
-        data=None,
-        message="Data created successfully",
-    )
-
-@router.put("/{overhaul_job_id}", response_model=StandardResponse[None])
-async def update_overhaul_schedule(
-    db_session: DbSession, overhaul_job_id: str, overhaul_job_in: OverhaulScheduleUpdate
-):
-    await update(db_session=db_session, overhaul_schedule_id=overhaul_job_id, overhaul_job_in=overhaul_job_in)
-
-    return StandardResponse(
-        data=None,
-        message="Data updated successfully",
-    )
-
-@router.delete("/{overhaul_job_id}", response_model=StandardResponse[None])
-async def delete_overhaul_equipment_job(db_session: DbSession, overhaul_job_id):
-    await delete(db_session=db_session, overhaul_schedule_id=overhaul_job_id)
-
-    return StandardResponse(
-        data=None,
-        message="Data deleted successfully",
-    )
+# @router.post("", response_model=StandardResponse[None])
+# async def create_overhaul_equipment_jobs(
+#     db_session: DbSession, overhaul_job_in: OverhaulScheduleCreate
+# ):
+#     await create(
+#         db_session=db_session,
+#         overhaul_job_in=overhaul_job_in,
+#     )
+
+#     return StandardResponse(
+#         data=None,
+#         message="Data created successfully",
+#     )
+
+# @router.put("/{overhaul_job_id}", response_model=StandardResponse[None])
+# async def update_overhaul_schedule(
+#     db_session: DbSession, overhaul_job_id: str, overhaul_job_in: OverhaulScheduleUpdate
+# ):
+#     await update(db_session=db_session, overhaul_schedule_id=overhaul_job_id, overhaul_job_in=overhaul_job_in)
+
+#     return StandardResponse(
+#         data=None,
+#         message="Data updated successfully",
+#     )
+
+# @router.delete("/{overhaul_job_id}", response_model=StandardResponse[None])
+# async def delete_overhaul_equipment_job(db_session: DbSession, overhaul_job_id):
+#     await delete(db_session=db_session, overhaul_schedule_id=overhaul_job_id)
+
+#     return StandardResponse(
+#         data=None,
+#         message="Data deleted successfully",
+#     )
diff --git a/src/overhaul_gantt/schema.py b/src/overhaul_gantt/schema.py
index e14e866..d6867b7 100644
--- a/src/overhaul_gantt/schema.py
+++ b/src/overhaul_gantt/schema.py
@@ -1,44 +1,44 @@
-from datetime import datetime
-from typing import List, Optional
-from uuid import UUID
+# from datetime import datetime
+# from typing import List, Optional
+# from uuid import UUID
 
-from pydantic import Field
+# from pydantic import Field
 
-from src.models import DefultBase, Pagination
-from src.overhaul_scope.schema import ScopeRead
-from src.scope_equipment_job.schema import ScopeEquipmentJobRead
-from src.job.schema import ActivityMasterRead
+# from src.models import DefultBase, Pagination
+# from src.overhaul_scope.schema import ScopeRead
+# from src.scope_equipment_job.schema import ScopeEquipmentJobRead
+# from src.job.schema import ActivityMasterRead
 
-class OverhaulScheduleBase(DefultBase):
-    pass
+# class OverhaulScheduleBase(DefultBase):
+#     pass
 
 
-class OverhaulScheduleCreate(OverhaulScheduleBase):
-    year: int
-    plan_duration: Optional[int] = Field(None)
-    planned_outage: Optional[int] = Field(None)
-    actual_shutdown: Optional[int] = Field(None)
-    start: datetime
-    finish: datetime
-    remark: Optional[str] = Field(None)
+# class OverhaulScheduleCreate(OverhaulScheduleBase):
+#     year: int
+#     plan_duration: Optional[int] = Field(None)
+#     planned_outage: Optional[int] = Field(None)
+#     actual_shutdown: Optional[int] = Field(None)
+#     start: datetime
+#     finish: datetime
+#     remark: Optional[str] = Field(None)
 
 
-class OverhaulScheduleUpdate(OverhaulScheduleBase):
-    start: datetime
-    finish: datetime
+# class OverhaulScheduleUpdate(OverhaulScheduleBase):
+#     start: datetime
+#     finish: datetime
 
 
-class OverhaulScheduleRead(OverhaulScheduleBase):
-    id: UUID
-    year: int
-    plan_duration: Optional[int]
-    planned_outage: Optional[int]
-    actual_shutdown: Optional[int]
-    start: datetime
-    finish: datetime
-    remark: Optional[str]
+# class OverhaulScheduleRead(OverhaulScheduleBase):
+#     id: UUID
+#     year: int
+#     plan_duration: Optional[int]
+#     planned_outage: Optional[int]
+#     actual_shutdown: Optional[int]
+#     start: datetime
+#     finish: datetime
+#     remark: Optional[str]
 
 
 
-class OverhaulSchedulePagination(Pagination):
-    items: List[OverhaulScheduleRead] = []
+# class OverhaulSchedulePagination(Pagination):
+#     items: List[OverhaulScheduleRead] = []
diff --git a/src/overhaul_gantt/service.py b/src/overhaul_gantt/service.py
index 4ea9d37..561c5ee 100644
--- a/src/overhaul_gantt/service.py
+++ b/src/overhaul_gantt/service.py
@@ -10,48 +10,69 @@ from src.database.service import search_filter_sort_paginate
 from src.scope_equipment_job.model import ScopeEquipmentJob
 from src.overhaul_activity.model import OverhaulActivity
 
-from .model import OverhaulSchedule
-from .schema import OverhaulScheduleCreate, OverhaulScheduleUpdate
+# from .model import OverhaulSchedule
+# from .schema import OverhaulScheduleCreate, OverhaulScheduleUpdate
+from .utils import get_google_creds, get_spreatsheed_service, process_spreadsheet_data
 
+# async def get_all(*, common):
+#     """Returns all documents."""
+#     query = Select(OverhaulSchedule).order_by(OverhaulSchedule.start.desc())
 
-async def get_all(*, common):
-    """Returns all documents."""
-    query = Select(OverhaulSchedule).order_by(OverhaulSchedule.start.desc())
+#     results = await search_filter_sort_paginate(model=query, **common)
+#     return results
 
-    results = await search_filter_sort_paginate(model=query, **common)
-    return results
 
+# async def create(
+#     *, db_session: DbSession, overhaul_job_in: OverhaulScheduleCreate
+# ):
 
-async def create(
-    *, db_session: DbSession, overhaul_job_in: OverhaulScheduleCreate
-):
 
+#     schedule = OverhaulSchedule(**overhaul_job_in.model_dump())
+#     db_session.add(schedule)
+#     await db_session.commit()
+#     return schedule
 
-    schedule = OverhaulSchedule(**overhaul_job_in.model_dump())
-    db_session.add(schedule)
-    await db_session.commit()
-    return schedule
 
 
+# async def update(*, db_session: DbSession, overhaul_schedule_id: str, overhaul_job_in: OverhaulScheduleUpdate):
+#     """Updates a document."""
+#     data = overhaul_job_in.model_dump()
+#     overhaul_schedule = await db_session.get(OverhaulSchedule, overhaul_schedule_id)
 
-async def update(*, db_session: DbSession, overhaul_schedule_id: str, overhaul_job_in: OverhaulScheduleUpdate):
-    """Updates a document."""
-    data = overhaul_job_in.model_dump()
-    overhaul_schedule = await db_session.get(OverhaulSchedule, overhaul_schedule_id)
+#     update_data = overhaul_job_in.model_dump(exclude_defaults=True)
 
-    update_data = overhaul_job_in.model_dump(exclude_defaults=True)
+#     for field in data:
+#         if field in update_data:
+#             setattr(overhaul_schedule, field, update_data[field])
 
-    for field in data:
-        if field in update_data:
-            setattr(overhaul_schedule, field, update_data[field])
+#     await db_session.commit()
 
-    await db_session.commit()
+#     return overhaul_schedule
 
-    return overhaul_schedule
 
+# async def delete(*, db_session: DbSession, overhaul_schedule_id: str):
+#     """Deletes a document."""
+#     query = Delete(OverhaulSchedule).where(OverhaulSchedule.id == overhaul_schedule_id)
+#     await db_session.execute(query)
+#     await db_session.commit()
 
-async def delete(*, db_session: DbSession, overhaul_schedule_id: str):
-    """Deletes a document."""
-    query = Delete(OverhaulSchedule).where(OverhaulSchedule.id == overhaul_schedule_id)
-    await db_session.execute(query)
-    await db_session.commit()
+
+async def get_gantt_performance_chart(*, spreadsheet_id = "1gZXuwA97zU1v4QBv56wKeiqadc6skHUucGKYG8qVFRk"):
+    creds = get_google_creds()
+    RANGE_NAME = "'2024 kurva s'!N79:BJ83"  # Or just "2024 schedule"
+
+    try:
+        service = get_spreatsheed_service(creds)
+        sheet = service.spreadsheets()
+        response = sheet.values().get(spreadsheetId=spreadsheet_id, range=RANGE_NAME).execute()
+        values = response.get("values", [])
+        keys = ['day', 'time', 'plan', 'actual', 'gap']
+        transposed = list(zip(*values))
+        results = [dict(zip(keys, result)) for result in transposed]
+    except Exception as e:
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=e)
+
+    processed_data = process_spreadsheet_data(results)
+
+
+    return processed_data
diff --git a/src/overhaul_gantt/utils.py b/src/overhaul_gantt/utils.py
index 0177426..89fdf6e 100644
--- a/src/overhaul_gantt/utils.py
+++ b/src/overhaul_gantt/utils.py
@@ -1,19 +1,14 @@
 import urllib
 from google.oauth2.service_account import Credentials
+from google_auth_oauthlib.flow import InstalledAppFlow
+from googleapiclient.discovery import build
+from googleapiclient.errors import HttpError
 
-SCOPES = ["https://www.googleapis.com/auth/spreadsheets.readonly"]
 
-# The ID and range of a sample spreadsheet.
-SAMPLE_SPREADSHEET_ID = "1gZXuwA97zU1v4QBv56wKeiqadc6skHUucGKYG8qVFRk"
-# Try with URL encoding
-sheet_name = "2024 schedule"
-encoded_sheet_name = urllib.parse.quote(sheet_name)
-RANGE_NAME = "'2024 kurva s'!N79:BJ83"  # Or just "2024 schedule"
+SCOPES = ["https://www.googleapis.com/auth/spreadsheets.readonly"]
 
 
 def get_spreatsheed_service(credentials):
-    from googleapiclient.discovery import build
-
     return build("sheets", "v4", credentials=credentials, cache_discovery=False)
 
 
@@ -21,3 +16,50 @@ def get_google_creds():
     creds = None
     creds = Credentials.from_service_account_file("credentials.json", scopes=SCOPES)
     return creds
+
+
+def process_spreadsheet_data(rows):
+    processed_data = []
+    for row in rows:
+        processed_row = convert_spreadsheet_data(row)
+        processed_data.append(processed_row)
+    return processed_data
+
+
+def convert_spreadsheet_data(data):
+    result = {}
+
+    # Convert day to integer
+    result['day'] = int(data['day'])
+
+    # Convert time to a datetime object
+    from datetime import datetime
+    # Assuming Indonesian format with month names
+    # Replace Indonesian month names with English if needed
+    month_mapping = {
+        'Januari': 'January', 'Februari': 'February', 'Maret': 'March',
+        'April': 'April', 'Mei': 'May', 'Juni': 'June',
+        'Juli': 'July', 'Agustus': 'August', 'September': 'September',
+        'Oktober': 'October', 'November': 'November', 'Desember': 'December'
+    }
+
+    time_str = data['time']
+    for indo, eng in month_mapping.items():
+        time_str = time_str.replace(indo, eng)
+
+    # Format: "Sabtu, Juli 13, 2024" -> "Saturday, July 13, 2024"
+    # Removing the day of week to simplify parsing
+    time_str = time_str.split(', ', 1)[1]  # Remove "Sabtu, "
+    result['time'] = datetime.strptime(time_str, '%B %d, %Y')
+
+    # Convert percentage strings to floats
+    # Handling format like "0,12%" -> 0.12
+    for key in ['plan', 'actual', 'gap']:
+        # Replace comma with dot (European to US decimal notation)
+        value = data[key].replace(',', '.')
+        # Remove percentage sign
+        value = value.rstrip('%')
+        # Convert to float
+        result[key] = float(value) / 100  # Divide by 100 to get the actual decimal value
+
+    return result